Showcase – Homes NSW MMC Program

Experience the Future of Housing

Homes NSW, in collaboration with Building 4.0 CRC, presented the future of social housing at the Modern Methods of Construction (MMC) Showcase in Mascot, NSW. Visitors saw firsthand how our innovative ‘Kit-of-Parts’ system is transforming housing delivery.

The Showcase was an opportunity for visitors to:

See a fully built, two-bedroom demonstration apartment
Learn about improved quality, sustainability, and liveability in housing
Engage with experts and industry leaders committed to solving the housing crisis.

Activities throughout September and October 2025 – the official Launch, industry workshops, an Open Day, private briefings and a Walk-Through – attracted over 1,000 attendees. You can read more below.

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Homes NSW MMC Program: Solving the Housing Crisis

Background

The traditional method of housing construction, largely unchanged for a century, is too slow and costly to meet this growing demand.

In response, the NSW Government has committed a historic $6.6 billion investment aimed at constructing 8,400 new homes and repairing 30,000 existing dwellings. To maximise the impact of this investment, Homes NSW and Building 4.0 CRC have developed the Modern Methods of Construction (MMC) Program.

What is the MMC Program?

The MMC Program is a revolutionary approach to delivering social housing. By leveraging modern manufacturing techniques and digitally enabled processes, we create standardised building components offsite. These components are then assembled rapidly onsite, fundamentally shifting the traditional 80% onsite, 20% offsite construction model.

The MMC Program is not just about building faster, but also about improving tenant outcomes, reducing lifecycle costs, stimulating local manufacturing, and building homes that are durable, liveable, and future-ready. The project commenced in May 2024, with Homes NSW and Building 4.0 CRC each contributing $2 million, in addition to in-kind contributions. We have also partnered with universities such as Monash University and the University of Melbourne for this research.

Rather than think about building site by site or project by project, our research primarily aims to develop a systematic program for housing delivery. This approach encompasses a 360° view of housing: from design and development, through to construction, maintenance, and repair.

Starting with medium-density homes (4-6-storey buildings) and using the standardised kit-of-parts manufactured offsite (i.e., bathrooms, kitchens, balconies), these parts will be assembled onsite, employing systems and processes to meet tenant needs, speed up delivery, and unlock economic efficiencies.

The ‘Kit-of-Parts’ Approach

A Modular System for Scalable Impact

The Homes NSW MMC Program uses a Kit-of-Parts methodology: a pre-defined suite of movable building components (e.g., bathrooms, kitchens, balconies, etc.) manufactured offsite and assembled onsite. This system allows for flexibility in design while improving build speed, quality, and cost-efficiency. Not every part is made offsite; the system provides for around 20% of building works to enable every building to be ‘fitted’ to the specifics of its location. In the other 80%, every part is designed to fit together within a standardised assembly framework, forming homes that are adaptable yet easily repeatable.

How it works:

Homes are designed using a set of movable, interchangeable parts e.g., Clip-on balconies, double-glazed windows, preset wall dimensions etc.
These parts are manufactured by multiple suppliers across the state using the same materials and processes, and from the same specifications.
Standardisation ensures compatibility, interoperability, and scalability.
Parts are delivered to the building site and assembled according to the specific site conditions, environment, and client design preferences.

Benefits of the Kit-of-Parts Approach:

Scalability & Efficiency
- Repeatable components manufactured in bulk enable faster build times and significant cost reductions
Workforce Readiness
- Attracts a more diverse, skilled, and inclusive workforce to construction by simplifying complex onsite tasks
Quality & Safety
- Controlled offsite fabrication improves quality control, waste reduction, and safety conditions
Design Flexibility
- While components are standard, homes can still be tailored to site conditions, climate needs, and community preferences
Lifecycle Consideration
- Products are designed for long-term maintenance, ease of replacement, and improved tenant experience

Core Objectives of the MMC Program

Speed and Efficiency: Rapid construction timelines to urgently address housing shortages.
Cost-Effectiveness: Reducing overall housing costs through scalable, efficient production.
Quality Assurance: Higher quality control through offsite manufacturing.
Sustainability: Environmentally responsible construction and durable housing designs.
Tenant Satisfaction: Improved liveability, adaptability, and long-term maintenance.

What Building 4.0 CRC Are Focusing On

The MMC Showcase reflects the key pillars underpinning Phase One of the Homes NSW MMC Program. Our aim is to develop a repeatable, scalable model for social housing delivery by addressing three critical areas:

Tenants, Land & Housing Types – We are identifying high-priority sites and tenant needs to inform a replicable design framework for medium-density housing (4–6 storey apartments). Our work includes site analysis and design-led urban principles to ensure buildings suit diverse communities, integrate into local environments, and align with Homes NSW’s future pipeline of projects.
Product, Supply Chain & Platform – This stream develops the backbone of the MMC Platform by defining products and components for standardisation to form the kit-of-parts and building a standardised design and assembly system. The team is working with suppliers to test this system, ensuring repeatability and scale is achievable, and developing benchmarking metrics to quantify and test outcomes. The primary goal is to achieve economic efficiencies while attaining the design standards and product requirements set by Homes NSW.
Change Management & Delivery Pathways – We are building a change framework to guide procurement, supply chain engagement, and industry upskilling to scale. This includes engaging with stakeholders to inform all stages of the Program, building a procurement process that is scalable and improves time and cost outcomes, and designing an education and training framework for upskilling on the new ways of building using MMC.

Strategic and Community Impact

The MMC Program delivers significant economic, social, and environmental benefits:

Economic Growth: Stimulates local manufacturing, creating jobs and boosting regional economies.
Cost Savings: Provides cost-efficient housing solutions, maximising the impact of public investments.
Environmental Sustainability: Promotes sustainable construction practices and energy-efficient housing.
Community Integration: Develops housing solutions that respect and enhance local community characteristics.

System 600

What sets the Homes NSW MMC Showcase apart is not just what you see onsite, but what sits behind the walls. This platform is powered by a rigorous, open-source framework of industrialised construction known as System 600. Rather than reinvent the wheel on every project, this system creates a repeatable backbone for high-quality, affordable housing delivered at scale.

System 600 is a standardised design and assembly system currently under development by the research team. This system specifies dimensions and configurations for components to ensure compatibility of assembly. It is based on a collaborative open-source, comprising parts supplied by various unrelated suppliers. The System manages the selection and use of parts with design and controls certain design parameters.

At its core:

System 600 uses a 600mm x 600mm grid system to manage component sizing and interoperability.
It minimises the number of unique SKUs required, simplifying supply logistics and improving scale economies.
Smart interfaces make onsite assembly intuitive and interchangeable across suppliers.
Components can be delivered in multiple formats: individually, as subassemblies, or in large pre-built modules.
Construction sequences are reimagined through decoupling and recoupling, improving efficiency in material and service installation.

The System Behind the Showcase

The Technical Expertise Powering MMC

What makes the Homes NSW MMC Showcase more than just a physical demonstration is the system that forms the backbone of design logic, manufacturing coordination, and scalable delivery. This system ensures that the demonstrator apartment is not a one-off build. It’s a replicable solution capable of delivering thousands of homes using standardised components and modular processes.

At the heart of the system is a set of principles that underpin every step of the build process, from early planning to onsite assembly and long-term maintenance. The MMC Program compresses traditional timelines and reduces costs by applying a consistent, staged delivery process to streamline how housing is planned, designed, delivered, and maintained.

_{Courtesy of Prof. Mathew Aitchison}

This four-stage pipeline replaces traditional project-by-project builds with a repeatable system: shortening timelines, reducing costs by 20%, and simplifying long-term maintenance with interchangeable parts.

Glossary

3D Printing: A construction method that utilises large scale 3D printers to create buildings layer by layer using cement style materials, sometimes referred to as ‘contour crafting’.
AI (Artificial Intelligence): The simulation of human intelligence in machines, enabling automated decision-making and analysis in construction processes, enhancing efficiency and accuracy.
Architectural Layer: The coordinated set of elements in a platform or kit of parts that define space, appearance, and user experience, such as facade and finishes, as distinct from structural or services layers.
Assembly: The process of putting together prefabricated components or modules in factories or in assembly locations near or at the building site prior to final installation in a building.
Assembly Sequence: The planned order in which MMC components and subassemblies are installed on site or in the factory to optimise safety, quality and program.
Assembly to Order (AoT): A production model where standardised subassemblies are stocked but only configured and assembled into a final product once a project or customer order is confirmed.
Base 600: A dimensional coordination rule that uses a 600 mm base module to align grids, components and interfaces so MMC parts can be combined and interchanged with minimal customisation.
BIM (Building Information Modelling): A digital representation of the physical and functional characteristics of a building providing a shared knowledge resource for information about the facility throughout its lifecycle.
Bulkhead Distribution System: A services strategy where ducts, cables and pipes are routed within ceiling bulkheads simplifying installation, access and replacement of service parts and assemblies.
Business-as-usual (BAU): The conventional one project at a time design and construction process that MMC seeks to improve on through productisation, standardisation, industrialisation and program supply purchasing.
Cassette: A panel comprised of several flat layers, forming a thin box-like assembly. This may be used for floors or ceilings, which can be prefabricated with various services integrated into them before being transported to the site.
Circularity: Designing products with the entire lifecycle in mind therefore promoting reuse, recycling, and sustainability. Circularity encourages designers and manufacturers to consider the end-of-life phase during the design process, leading to less waste and more sustainable practices.
CLT (Cross-Laminated Timber): An engineered wood product made from layers of timber boards with each layer glued together at right angles to the layer below. CLT is used for constructing walls, floors, and roofs, offering strength and sustainability benefits.
Community Housing Provider (CHP): A registered not-for-profit organisation that owns or manages affordable or social housing and may act as a client or asset manager for MMC residential projects. CHPs may lease properties owned by Homes NSW. Some larger CHPs may develop housing stock and pay other organisations to manage them on their behalf.
Community Licence Model: An approach to intellectual property and data licensing that allows shared use, adaption and improvement of MMC platforms and design assets within a defined set of rules, community or ecosystem.
Component: Individual elements or sections of a larger system or structure often prefabricated offsite.
Component Library: A digital catalogue of standardised MMC parts and subassemblies that can be selected, configured and used across multiple projects.
Configurability: The degree to which a platform or system can be varied using predefined options and rules, enabling the customisation of MMC buildings without bespoke redesign.
Continuous Improvement : An ongoing process aimed at enhancing work practices, products, services or designs through incremental changes over time. A systematic approach that encourages organisations to seek small, regular improvements by routinely reviewing and identifying areas where improvements and efficiency gains can be achieved throughout the life cycle.
Continuous Structural Interface: A consistent structural line or zone of clear load paths where multiple MMC components can connect with compromising structural integrity.
Creative Commons Attribution (CC BY): An open licence that allows others to copy and adapt content provided appropriate credit is given to the original creator.
Creative Commons License: A type of license that allows creators to share their work legally while specifying how others can use it, often used in the context of open-source designs and documentation in construction.
Decoupled Balconies: Balcony Structures that are structurally separated from the main building frame or structural, often as prefabricated modules.
Decoupling: The design of MMC systems so that layers or subsystems (such as structure, services and finishes) can be changed, upgraded or replaced independently over the building’s lifetime.
Demonstrator Apartment: A prototype dwelling built using MMC methods to test platform rules, validate performance and communicate the value proposition to stakeholders.
Demountable: Describes structures designed to be easily disassembled or relocated without significant loss of integrity or functionality.
Design rules: Constraints and options (such as spans, module size and service zone) that govern how MMC components can be combined while maintaining compliance and manufacturability.
Design Structure Matrix (DSM): A method for mapping dependencies between elements in an MMC System, which helps to identify couplings, interfaces and opportunities for modularisation.
DfM (Design-for-Manufacture): A design approach that optimises building components and assemblies, so they are simple, cost-effective and reliable to manufacture using industrialised processes.
DfMA (Design for Manufacturing and Assembly): A design approach focused on simplifying the manufacturing and assembly processes. By considering the ease of assembly during the design phase, companies can reduce production costs and time while improving product quality. DfMA emphases minimising the number of parts and designing parts that are easy to assemble.
DfMAD (Design for Manufacture and Assembly with Disassembly): An extension of Design for Manufacturing and Assembly (DfMA) design philosophy that facilitates the easy disassembly of building components at the end of their life cycle. This approach supports sustainability and circularity through recycling and reusing materials.
Digital Platform: An integrated digital environment that connects an MMC system, including product data, configuration tools, supply chain and project delivery workflows.
Digital Prototyping: Using BIM and simulation tools to virtually test prototypes of MMC assemblies, components and systems prior to committing to physical manufacturing or construction.
Digital Twins: 3D virtual replicas of physical assets, processes or systems that can be used for simulations, monitoring and analysis to optimise performance and maintenance in buildings.
Direct Load Path: A structural design principle where loads travel through clearly defined, uninterrupted paths from components to foundations.
Discontinuous Walls: Walls Systems that are intentionally broken or separated at defined locations (such as at moment joints or interfaces) to provide flexibility in a system, improve buildability or separate for improved acoustic, thermal or movement performance.
Distributed Supply: A supply strategy where multiple manufacturers, suppliers and fabricators can produce compatible MMC system components by adhering to common rules and interface conditions, therefore reducing the supply risk that arises due to a locked-in single supplier.
Embodied Carbon: The greenhouse gas emission associated with producing, transporting and installing construction material and components, typically assessed over a building’s life cycle.
End-of-life Strategy: A planned approach for how construction components, materials and systems will be disassembled, reused, recycled or disposed of at the end of a building’s service life.
Environmental Product Declaration (EPD): A third party verified report that quantifies the environmental impacts of a product over its life cycle, used to compare construction materials and manufactured products.
Exterior Service Module (ESM): A prefabricated external unit that consolidates services (such as HVAC, electrical and communication cabling) on the outside of a building, enabling easy access, replacement, servicing and upgrade.
Exterior Subsystem: The collection of MMC components (such as facade, cladding and external sun shading) that form the outer enclosure of a building and interface with the structure and services.
Fabricate: The process of making building components or materials in a controlled environment, typically offsite.
Fixed, Flexible or Free: A classification for design parameters or interfaces: Fixed (cannot change), Flexible (can vary within rules) or Free (open to project-specific definition).
Flat-pack: A delivery and assembly method where building components are designed to be produced in flat sections for transport. Flat-pack is another term for panelised systems where the elements of walls and ceilings are made of thin panels/cassettes as distinct from volumetric modular systems where a component is a box shaped volume with room like proportions. Flat-pack reduces costs and space requirements during transportation compared to volumetric modular.
Four-wave Transformation (cost, market scale, time, design): A framework describing how MMC platforms evolve in four ways, balancing cost reduction, market scale, delivery time and design capability.
Generic Component: A non-brand-specific component defined by performance and geometry, allowing multiple suppliers to manufacture interchangeably.
Global Geometric Constraint: A rule that applies across a whole system (such as a storey height or a module grid) and governs how MMC components must be sized and located to adhere to the system and be compatible with other components.
Globally Unique Identifier: A digital identifier assigned to elements or objects so they can be uniquely tracked across systems and life cycle stages.
Glulam (Glued Laminated Timber): A type of engineered wood product made by bonding together individual pieces of lumber with durable adhesives. Glulam is used for structural applications due to its high strength-to-weight ratio and is mostly used for constructing beams or columns. Unlike Cross Laminated Timber the layers are glued parallel to their adjacent layers.
Horizontal Service Rack (HSR): A prefabricated horizontal services assembly, often at ceiling level, that carries multiple trade services in a single coordinated unit.
Hybrid (Modular Hybrid): A construction approach that combines flatpack /panelised systems with volumetric modular components to enhance flexibility and efficiency in the building process. For example panelised walls and floors might be combined with volumetric bathroom module assemblies.
IDC (Industrialised Design and Construction): A systematic approach to construction that integrates design manufacturing and assembly processes to improve efficiency, quality and sustainability in building projects.
IFC Entity Type: The specific class in the IFC scheme (such as IfcWall or IfcDoor) that defines the attributes and relationships of a digital BIM object.
IFC Version Compliance: The extent to which digital building models (BIM) and related tools are created, exported and successfully validated against specified Industry Foundation Classes (IFC) schema, ensuring accurate open‑standard data exchange and reliable interoperability across digital workflows.
Industrialised Construction (IC): A construction approach that applies manufacturing principles, automation and standardised components to deliver buildings more efficiently and at scale. The term is interchangeable with MMC.
Industry Foundation Classes (IFC) Formats: Open vendor-neutral file formats based on the IFC schema for exchanging BIM data between tools and stakeholders from design and construction, through to operations.
Informed Design: A design process that uses data from manufacturing, logistics, performance and past projects to drive decisions and optimise MMC solutions.
Installation: The process of placing and fixing parts / assemblies / modules into the building site to form a complete building.
Integrated Digital Delivery (IDD): Digital comparability where project information flows seamlessly across design, manufacturing, construction and operations by shared digital tools or open international file standards such IFC (Industry Foundation Classes).
Interchangeability: The ability to substitute one component for assembly with other compatible component without redesigning adjacent interfaces within a system.
Interfaces / Interface Requirements: The defined physical, geometric and performance conditions at the boundaries between MMC components or systems that ensure they connect and work together.
Interoperability: The capability of different systems or software to exchange and use information accurately, often enabled by a standard (such as IFC) or rule (such as System 600).
Intertenancy Walls: Internal walls that separate individual occupancies, which are designed to meet fire and acoustic requirements.
J-Rail: A rail profile used to support and locate facade or wall panels, allowing the alignment and fixing of building components.
Just-in-time: A logistics approach where components are delivered to the factory or site exactly when needed, reducing storage, handling and damage.
Kit-of-parts: A collection of pre-manufactured components that can be assembled onsite to create a complete structure. The kit exists prior to project design commencing, allowing a designer to choose the parts to comprise the design from.
Kitsets: Pre-packaged bundles of coordinated parts and fasteners that form an assembly when installed according to standard procedures.
Lateral Bracing: Structural elements or systems that provide resistance to horizontal loads, such as wind, and stabilise walls or frames.
Lattice Wall (X Frame): A wall system that uses a repeated X-shaped bracing pattern to provide stiffness and stability while minimising material use.
Lean Construction: A methodology that focuses on minimising waste and maximising value in construction processes through efficient project management and continuous improvement practices. This is derived from lean manufacturing, often referred to as the Toyota Way. All forms of waste (material, motion, inventory, waiting, over-production, over-processing and transport) are constantly reviewed for improvements.
Life Cycle Assessment (LCA): A method of quantifying the environmental impacts of a product, process or service over its lifecycle.
Live Performance Analysis: Continuous or real-time monitoring and evaluation of an MMC building’s performance, feeding data back into design and platform improvement.
Make-to-Order (MtO): A production model where the manufacturing of components or assemblies begins only after an order is received, allowing higher customisation but longer lead times.
Make-to-Stock (MoS): A production model where the manufacturing of components or assemblies is ahead of demand and held in inventory.
Mass Timber: Refers to heavy engineered timber products used in construction, including CLT, LVL and glulam. Mass timber is recognised for its sustainability, aesthetic appeal, and structural capabilities. The term heavy is relative to the lightweight nature of traditional timber house framing.
Minimum Viable Product (MVP) Approach: A strategy where the smallest workable version of an MMC system or platform is deployed to test value and then iteratively improved moving forward.
MMC (Modern Methods of Construction): An umbrella term encompassing various innovative construction techniques aimed at improving efficiency, sustainability, and quality in building projects. MMC includes panelised construction, modular construction, kit-of-parts, prefabrication, and other advanced construction methods.
Modular: Describes a construction method where buildings are created using separate sections or modules that can be easily assembled. Correctly defined, the term is ‘volumetric modular’ and refers specifically to a box-like assembly. The term is often corrupted to refer to all forms of prefabricated systems including panelised systems.
Modularisation: A construction approach that involves creating pre-engineered sections or modules of a building in a factory setting, which are then transported to the site for assembly.
Modularity: A system composed of discrete, self-contained units that can be combined in different ways to create varied MMC outcomes.
MVP Parts List: The minimum set of components required to deliver the first workable version of an MMC platform or system.
Non-proprietary: Not tied to a single supplier or vendor, allowing multiple suppliers to produce compatible components based on shared specifications or rules.
Novation: A contractual process where design responsibilities and reporting are transferred or novated from the client to another party (often a contractor or manufacturer) during the project delivery.
Offsite: Construction activities conducted away from the final building site, typically in a factory setting. Offsite methods enhance quality control, reduces waste and reduce onsite labour requirements. Offsite can include near site locations, for example adjacent vacant sites used as assembly facilities.
Offsite Manufacturing: Manufacturing focused specifically on the production of building components in a factory setting before transporting them to the construction site.
Onsite Manufacturing: Capability created at the building site to manufacture components that are then lifted into the building structure and installed. There are numerous examples of onsite manufacturing including site assembly of permanent formwork systems, robotics equipment in temporary sheds for making steel or timber elements and 3D printing, where the robotic equipment operates at the building site.
Open Curated System: A platform where rules and components are openly published but actively curated to maintain quality, compatibility and coherence.
Open-source Software Licences: Licences that allow software to be used, modified and shared under specific conditions, supporting transparent toolchains.
Optimised: Configured to achieve a balance of performance, cost, manufacturability and time within the constraints of an MMC platform.
OSB Brace Board: Oriented Strand Board (OSB) panels used as bracing elements to provide resistance and stiffness within a wall or cassette system so that it remains square under lateral load.
Panelisation: Producing building elements into prefabricated panels that can be manufactured off site and rapidly assembled on site.
Panelised Systems: A construction technique involving the use of flat panels (such as walls or roofs) that are prefabricated offsite and then assembled onsite. A panel system may incorporate linings, pre-wiring, windows and doors assembled at a factory. This method allows for quick assembly. Panels are flat building elements, typically relatively thin in width. They may be described as Open or Closed depending on whether they are fully enclosed on both sides (closed) or one side has been left off (open) for purposes of inspection, installation access or to allow incorporation of other building works such as electrical services. Examples of panelised systems include CLT (Cross Laminated Timber), structural insulated panels (SIP), precast concrete, pre-nailed timber frames and unitised metal framing systems. Panels and cassettes are similar in nature. A cassette is a type of panel that incorporates several layers either side of a void. A panel can consist of a single layer, for example a panel of CLT.
Parametric Design: A design process that uses algorithms to manipulate design variables dynamically, allowing for rapid iterations and customisations based on specific requirements. This may also be referred to as computational design and sometimes as generative design where the algorithms are sufficiently sophisticated to cause part of the design to generate automatically in response to basic inputs.
Parametric Tools: Digital design tools where geometry and properties are driven by parameters and rules, enabling rapid generation and evaluation of options.
Part: A simple discrete element of a building such as a beam, door or floor. The terms part and component are interchangeable. This is distinct from a raw building material like timber or plasterboard in that value has been added in the form of shaping, finishing, assembling or otherwise processing raw materials to create the discrete part. The term part further implies that the element can be separated from the rest of the building assembly and therefore made separate from the remainder of the building. This is distinct from, for example, a concrete structure where all of the columns and floors may have been poured as one cohesive mass that cannot be broken into parts.
Performance Layer / Performance Skin: The outer layer or system of a building that delivers environmental and comfort performance, such as thermal and weather protection.
Permissive Licence: A licence type that allows broad reuse, modification and sharing with minimal requirements, often used for open MMC standards and content.
Pixel Concept: A conceptual minimum unit in a platform (such as a structural bay) that can be aggregated to form larger MMC configurations.
Platform Construction: A construction strategy that uses a repeatable kit-of–parts, shared rules and standard interfaces to deliver diverse projects as variations of a common platform.
Pod: Volumetric modules used in construction such as bathroom, kitchen or office pods which are manufactured offsite and installed within the main structure. Pods are typically not loadbearing structures and therefore still require the building to have a structural frame unrelated to the pod.
Podium: The lower portion of a building that typically contains parking or non-residential uses and supports one or more levels of residential use above.
Prefabrication: Manufacturing parts offsite before transporting them to the construction site. This approach minimises onsite labour and reduces site based construction time while enabling high-quality standards in more efficient working environments. Key benefits include reduced construction costs through economies of scale and enhanced safety due to limiting onsite environment conditions. Prefabrication is a wide term for many different types of fabrication including basic traditional construction methods (performed offsite) to advanced manufacturing using automated equipment.
Process Labour: Labour that follows standardised, repeatable processes typical of manufacturing environments, as compared with trade or site labour that requires a response to specific site conditions.
Product Platform: A framework or system that allows for the efficient design and production of multiple buildings using a common set of components or modules. This approach enhances standardisation, continuous improvement, compatibility and reusability across different projects. Central is the idea that the building is a product for a defined customer segment and that the platform ensures efficient production and achievement of product goals such as customer satisfaction, quality and value for money.
Productisation: Turning project specific solutions into repeatable, standardised products that can be deployed across multiple building projects.
Project Pipeline: The sequence of current and anticipated projects that a platform is designed to serve, informing investment in MMC capacity and standardisation.
Proprietary Component: A component designed and supplied by a specific manufacturer, often protected by intellectual property and not interchangeable without redesign.
Proprietary System: An integrated set of components and rules controlled and supplied by a single vendor.
Prototyping: Building and testing early versions of MMC components, assemblies or systems to validate performance, manufacturability and user experience.
Quality Control: A systematic process aimed at ensuring that construction outputs meet specified requirements and standards. Quality control involves monitoring all stages of the construction process, from material selection to final inspections.
Rainscreen: An outer cladding layer designed to shed water and protect a ventilated cavity, separating weather protection from the primary structure and insulation.
Rapid Assembly: Construction processes designed to minimise onsite time through high levels of prefabrication, standard connections and efficient construction sequencing.
Rapid LCA: A streamlined life cycle assessment (LCA) method that uses templates or default data to quickly compare the environmental impacts of design options at the concept stage.
Rule-based Design: A design approach where allowable configurations are generated and checked against a defined set of rules and compliance standards within the constraints of an MMC platform or system.
Scalability: The ability of an MMC platform to be deployed across more projects, locations or typologies without proportional increases in cost or complexity.
Secondary Structure: Structural elements that support non-primary loads, such as facades, services or internal partitions, and connect them to the building’s main structural frame.
Serial Process: A workflow where activities occur one after another with limited overlap, in contrast to parallel integrated delivery methods.
Service Life Coefficients: Factors used to adjust nominal service lives based on exposure, use and maintenance, and used to determine life-cycling planning and replacement strategies.
Services Subsystems: Coordinated packages of mechanical, electrical, hydraulic and communications service elements delivered as repeatable MMC modules or racks.
Single Transfer Slab: A single structural slab that redistributes loads from the building’s structure to a different support grid or podium structure below.
SIP (Structural Insulated Panel): A composite building panel made from an insulating foam core sandwiched between two structural facings. SIPs provide insulation and structural integrity while allowing for quick assembly. SIPs are typically loadbearing elements with a capacity to achieve buildings 2-3 storeys in height.
Site Assembly: Site assembly or land assembly is the process of combining two or more small adjacent properties into a single, consolidated parcel.
Site Assemblies (Row Assembly, Corner Site Assembly, Through-site Assembly (Multifrontal)): Standardised patterns of arranging MMC buildings on site, such as rows, corner site or through-site configurations, used to streamline design and master planning layouts.
Site Logistics: Planning and managing the movement, storage and lifting of MMC components on and around the site to ensure safe and efficient construction.
Smart Interfaces: Interfaces between components that embed rules and tolerances to ensure reliable connection and performance.
Spatial Design: The arrangement and organisation of spaces within a building to achieve functional, liveable layouts.
Stackable: Refers to building components designed to be easily stacked or arranged vertically, facilitating efficient transportation and assembly on site.
Standard Operating Procedures (SOPs): Procedures that codify step-by-step tasks for manufacturing, assembly, inspection and maintenance in MMC delivery.
Standardisation: The process of establishing uniform specifications and criteria for materials, components, and construction methods to ensure consistency, quality and efficiency.
Standardised Structural Components: Repeated structural elements (such as beams, columns or cassettes) with common dimensions and interfaces that simplify design, manufacture and assembly.
Standardised Walls: Wall types with fixed layers, dimensions and performance ratings that are reused across projects within an MMC platform.
Subassemblies: Intermediate groupings of parts that form larger building blocks within an overall MMC platform system, simplifying production and onsite assembly.
Superstructure: The part of a building above the foundation or podium, including frames, walls and floors.
Supplier Agnostic: An open system or platform designed so that multiple suppliers can provide compatible components without changing the platform or interfaces.
Supplier Ecosystems: Networks of manufacturers, logistics providers, suppliers and installers organised around a shared MMC standard and platform.
Supply Agreements: Contracts that define long-term supply, pricing and performance expectations for MMC components and assemblies.
Symmetrical Wall Alignment: Aligning walls and structural lines symmetrically across floors and units to simplify load paths and coordination.
System 600: System 600 is being developed by Building 4.0 CRC’s research team as part of the Homes NSW MMC Program. It is a standardised design and assembly system used in modular construction that specifies dimensions and configurations for components to ensure compatibility of assembly. System 600 is an open-source, collaborative system comprising of parts supplied by various unrelated suppliers. The “600” of the title references the base 600mm x 600mm grid that coordinates the system’s internal planning.
System Schema: The formal description of systems, components and their relationships that underpins a platform’s rules and digital representations.
System-based Design: Designing buildings as compositions of interoperable systems (structure, services, envelope, etc.) governed by shared rules and interfaces.
Timber Cassette: A prefabricated timber panel, typically including structure, cladding and sometimes services or finishes, used for floors, roofs or walls.
Time-based Normalisation: Comparing processes or costs by expressing them per unit of time (such as per day or per hour). Time–based normalisation can be used to support productivity assessment in MMC projects.
Traditional Construction: A customised building with little to no offsite manufacturing. This construction method is considered the standard for most residential, commercial and industrial builds. Trade skills are required to interpret design intent into highly specific arrangements and to handcraft building materials into the final building configuration.
Transportable: Refers to a building that is entirely manufactured offsite and transported onsite. e.g. a small house that gets transported on the back of a truck.
Turnkey Supply: A delivery model where a single provider supplies a complete, ready-to-use building or system, including design and construction, or design, manufacture and assembly.
Typology: A category of building or dwelling type used to group similar forms or configurations.
Unique Identifer (GUID or System): A label that uniquely identifies a component, assembly or object within a platform or system, enabling tracking and data linkages.
Unit-based Normalisation: Analysing data per unit (such as per occupancy or per square metre) to compare performance and cost across MMC options.
Unitisation (of Assemblies): Dividing a building into repeatable units or modules that can be manufactured, transported and installed as discrete packages.
Universal Backplane: A common structural and services interface onto which different facade or fitout options can be mounted without redesign.
Vertical Services Rack / Vertical Riser Rack (VRR): A prefabricated vertical module that carries stacked services between floors, simplifying installation and maintenance.
Vertical Systems: Systems that primarily operate in the vertical direction, such as service risers and circulation cores.
Volume Pricing Agreements: Pricing arrangements that provide discounts or improved terms based on committed or achieved volumes of MMC components.
Volumetric: Modular units that are three-dimensional and often include complete internal fittings (e.g., bathrooms or kitchens). These units are manufactured offsite and assembled onsite to form a complete structure.
Wright’s Law: A learning-curve principle where scaling up cumulative production of standardised MMC components leads to predictable reductions per unit cost through process optimisation, repetition and manufacturing efficiency.

FAQs

Modern Methods of Construction is an umbrella term encompassing various innovative construction techniques aimed at improving efficiency, sustainability and quality in building projects.  

It is not a singular approach, rather it is a collection of methods to plan, design, build and maintain homes. MMC includes offsite manufacturing which can take many forms, for example, a kit-of-parts approach, modular, prefabrication and volumetric building. 

MMC is not a new concept, with many home building products already built offsite including frames and trusses. Australia has deep expertise and innovation locally to be harnessed and grown.

To scale the adoption of MMC to maximise time and cost savings and deliver quality social housing faster, the Program is developing standardised and repeatable systems using consistent products manufactured offsite.  

MMC can also be referred to as ‘industrialised construction’.   

It is anticipated that the approach taken by the Homes NSW Program will reduce construction timeframes and costs by 20%. This estimate is based on the learning effects of increased production as well as global case studies. Savings are expected to increase over time as implementation is scaled up.  These benefits are realised by using standardised parts and systems to achieve greater efficiencies than those possible when a project-by-project approach to design and construction is employed.   

Scaling up demand and manufacturing of larger batches of parts is critical to growing the cost and time savings achievable while continuously improving quality. 

Maintenance timeframes and costs are also expected to be reduced. Consideration of a home’s maintenance over its lifecycle will be at the forefront of any delivery. This includes ensuring that standard products can be sourced from multiple suppliers and easily installed to minimise disruption to tenants and improve productivity.  

When it comes to using MMC to deliver housing, there is not a one size fits all solution. Any approach selected must address the problem at hand.

This is why our team has started by developing a holistic understanding and assessment of the diverse needs of Homes NSW.

These needs focused on the delivery of a large number of durable, adaptable and ‘tenure blind’ homes across NSW (indistinguishable from other housing in the market), in different locations and on both urban and regional sites.

Following this needs assessment, the research team reviewed key learnings from international and local case studies and how these would apply to the Homes NSW context.

Based on this comprehensive assessment and research, our team identified the kit-of-parts as the most effective MMC approach for the Homes NSW Program given its flexibility to adjust to local conditions. With products manufactured offsite and assembled onsite, this approach employs standard systems and processes which can be applied to build homes on a range of sites and locations.

The kit-of-parts allows efficient design, quality maintenance over lifecycle and most importantly, configuration to meet the evolving needs of different tenant cohorts.

This also means that Homes NSW would be able to source standardised products from multiple suppliers and create scale which drives a reduction in costs and an increase in quality.

The Program is focused on the kit-of-parts being sourced from a distributed supply chain with parts bought from a number of manufacturers. The Program proposes to draw on the latent manufacturing capability in the supply chain.

This approach will mitigate risk by working with a number of suppliers and reduce the need for high capital investment into purpose-built facilities. It will allow for wider participation, specialisation and leveraging of existing manufacturing capability. This is supported by an assessment of the capability and capacity of Australian based manufacturers. 

For MMC to work, there must be commitment to use the define standardised parts, design and assembly systems.  

There are previous examples where new product designs were added on a project-by-project basis. This led to an undermining of the scale of efficiencies and the principles of MMC.

For MMC to succeed and achieve the economic benefits available, there must be a consistency of solutions, standardised parts, designs that leverage a basket of standardised parts and a volume of procurement from a distributed supply chain.

This why the Homes NSW MMC Program is developing strategies, methods and frameworks for MMC to succeed, scale up and be adopted more broadly across the industry. 

Building 4.0 CRC brings an independent and expert team of researchers to develop solutions to deliver quality social housing in NSW faster.

Each member of the team brings experience in their specialist area whether in design, manufacturing, procurement, supply chain management, stakeholder engagement, or education to the Program. This expertise is backed up by applied knowledge in using MMC across projects in Australia and New Zealand.

The CRC team is working closely with Homes NSW to incorporate learnings and best practice into the Program. This valuable involvement will leverage the CRC’s experience from their own projects, including the 70 CRC projects (either completed or active) undertaken since 2020 to revolutionalise the way we buil

Showcase – Homes NSW MMC Program