Singapore has written factory style construction into its land sales, building regulations and public project approvals, and in September it took inspections virtual. It is one of the clearest examples anywhere of an industry being rebuilt around manufacturing.
Most countries talk about making construction more like manufacturing. Singapore has written it into its land sales, building regulations, public project approvals and now its final inspections.
The result is one of the most complete attempts anywhere to industrialise how buildings are delivered. It shows what happens when a government pulls every lever at once.
Design for manufacturing and assembly sits at the centre
The Building and Construction Authority describes Design for Manufacturing and Assembly (DfMA) as construction designed for manufacturing off site in a controlled environment, before being assembled on site.
DfMA is one of three pillars BCA uses to drive productivity, alongside Integrated Digital Delivery (IDD), which uses digital tools to connect the parties working on a project, and robotics and automation. BCA says the three together help the industry achieve better project delivery outcomes.
On its DfMA page, BCA lists six main technologies: advanced precast concrete systems, mass engineered timber, prefabricated prefinished volumetric construction (PPVC), prefabricated bathroom units, prefabricated mechanical, electrical and plumbing systems, and structural steel. It is the same factory first thinking behind the global move toward homes built in the factory.
Prefabricated Prefinished Volumetric Construction (PPVC)
PPVC is a DfMA method in which free standing volumetric modules, complete with internal finishes, are built and assembled in an accredited factory and then installed on site. The building site becomes largely an assembly and connection operation rather than a sequence of trades.
BCA says PPVC can deliver up to 40% savings in manpower and time, and one to two months of time savings over conventional construction, with some projects saving four months or more. It cites the Brownstone project, which achieved up to four months of time savings and 20% manpower savings.
Singapore makes adoption hard to avoid
What sets Singapore apart is not the technology. It is how the policy is enforced.
Under the buildability and constructability framework, projects with a gross floor area of 5,000 square metres or more must meet a minimum Buildable Design Score and a minimum Constructability Score. Buildability requirements have been in regulation since 2001, with the Constructability Score added later, and BCA says the minimum Buildable Design Score has been raised progressively over the years. The Constructability Score rewards site methods such as system formwork and climbable scaffolding.
Government land sales go further. BCA says all Government Land Sales sites must demonstrate a minimum of five IDD use cases and adopt high levels of prefabrication and DfMA technologies across all disciplines, such as PPVC, advanced precast concrete and prefabricated mechanical, electrical and plumbing systems. When the government is the seller of the land, that is a powerful lever.
Public projects have their own gate. The Productivity Gateway Framework, introduced in 2015 and enhanced in 2024, facilitates the adoption of advanced construction technologies and progressive practices in public sector projects, with the stated aim of raising productivity and reducing manpower use.
This is a different model from Canada’s attempt to order its way to a modular industry through direct government purchasing. Singapore does not just buy factory built buildings. It makes them a condition of access to land, approvals and public work.
Singapore does not just buy factory built buildings. It makes them a condition of access to land, approvals and public work.
DfMA and digital delivery adoption has climbed steadily
The approach is moving the numbers. In March 2025, BCA reported that IDD adoption in new developments rose from 58% to 67% between 2023 and 2024, while DfMA uptake increased from 61% to 68%.
Those figures sit against targets in the Built Environment Industry Transformation Map, launched in September 2022, which aimed to lift both IDD and DfMA adoption by gross floor area to 70% by 2025. BCA had not published a final figure showing whether the 2025 targets were met at the time of writing.
Singapore has taken building inspections virtual
The latest step targets the end of the project. On 2 September 2026, eight regulatory agencies, including BCA, the Land Transport Authority, the Singapore Civil Defence Force and the Urban Redevelopment Authority, introduced a whole of government virtual inspection process with immediate effect.
Preliminary findings from pilot projects showed project teams could obtain Temporary Occupation Permit approval up to two months earlier than under the conventional physical inspection process. Pilot projects, including Grand Dunman, showed up to 30% manpower savings. The agencies have published a guidebook to support the process.
BCA had already been using 360 degree site capture for its own virtual site inspections. The new process applies the approach to Temporary Occupation Permit and Certificate of Statutory Completion checks across all eight agencies.
Site supervision is being professionalised too
At the opening of International Built Environment Week on the same day, Minister for National Development Chee Hong Tat announced a Site Supervision Firm Accreditation Scheme. From 2028, structural works projects worth more than S$75 million will need to appoint BCA licensed firms for site supervision.
It is a reminder that industrialising construction is not only about factories. When more of a building arrives as finished components, the quality of the people coordinating and checking the assembly matters even more.
A production system, not a prefab policy
The government has also said it will explore another run of its Built Environment Accelerate to Market Programme, which has been used to move new solutions from pilots toward commercial deployment.
Put together, Singapore has connected design, manufacturing, logistics, site assembly, digital information and inspection into one system, and each piece reinforces the others. Designers design for the factory because the rules reward it. Factories invest because land sales and public projects create demand. Inspectors can go virtual because the digital information already exists.
The model also shifts where the hard work happens. More decisions have to be locked in during design, because a module or precast element cannot easily be changed once it leaves the factory. Coordination between designers, manufacturers, contractors and inspectors becomes the critical path, and the digital information passed between them has to be reliable enough for every party to build and approve from.
The site in that model looks less like a sequence of trades and more like an assembly line with a crane. After two decades of steady rule making, Singapore is one of the clearest examples of an industry being rebuilt around production rather than improvisation.
THE GOOD BUILDER TAKE
The lesson from Singapore is not that prefab works. Plenty of countries have proven that. It is that prefab only scales when every part of the system points the same way. Land, approvals, public procurement, digital information and inspection all pull together. Pull one lever on its own and you get pilots. Pull them all and you get an industry.
Frequently asked questions
The Building and Construction Authority describes Design for Manufacturing and Assembly as construction designed for manufacturing off site in a controlled environment before being assembled on site. Key technologies include PPVC, advanced precast concrete, mass engineered timber and prefabricated bathroom and building services systems.
Projects with a gross floor area of 5,000 square metres or more must meet a minimum Buildable Design Score and a minimum Constructability Score. Buildability requirements have been in regulation since 2001, and the minimum Buildable Design Score has been raised over time.
Introduced on 2 September 2026 by eight regulatory agencies, it allows the regulatory inspections needed for Temporary Occupation Permit and Certificate of Statutory Completion approval to be done virtually. Pilot projects showed Temporary Occupation Permit approval could be obtained up to two months earlier than with physical inspections.
BCA says PPVC can deliver up to 40% savings in manpower and time, typically one to two months faster than conventional construction, with some projects saving four months or more.
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Last updated 28 September 2026. Figures reflect the latest official releases available at that date.
General Information Only: This article provides general information only and does not constitute legal, financial, tax or professional advice. It does not take into account your particular circumstances. Figures and policy details are drawn from official sources current at the date of publication and may change. You should seek independent professional advice before acting on any information in this article.
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