Garden Waterfront II @ Tengah is now complete, giving Singapore a real-world test of how public housing can be built with more work shifted off-site, smarter lifting tools and less reliance on manual labour. HDB announced the milestone on 18 September 2026. The project itself was completed in June, while its companion development, Garden Waterfront I @ Tengah, is on track for completion by the end of 2026.
The two developments form HDB's first Construction Transformation Project (CTP), launched in 2022 with Obayashi Singapore. HDB says both are on track to achieve the targeted 25% improvement in site productivity over a projected baseline of 0.6 square metres of floor area completed per manday.
01 · What has actually been completed
The newly completed milestone is Garden Waterfront II @ Tengah, the first of the two CTP BTO projects. HDB says the programme was set up as a live testbed for methods that could make construction more productive and safer while reducing manpower dependence.
This is important context for residents because the project is not just a one-off showcase. HDB's stated aim is to identify methods that work in a real BTO development, then adapt and scale them across a much larger housing programme.
02 · Where the 25% productivity gain comes from
HDB attributes the targeted productivity improvement to a combination of measures rather than one piece of equipment. A major change is greater off-site fabrication: more structural work is completed before components reach the construction site, reducing the amount and complexity of work that has to happen on-site.
The projects also use more standardised prefabricated components and reusable moulds. HDB says this reduces crane use and manpower requirements, eases congestion and coordination pressure on-site, and allows common precast components to be redirected across projects where needed.
Site productivity is HDB's measure of constructed floor area completed per manday. In other words, a higher figure means more floor area can be delivered with the same amount of labour.
03 · The structural experiment also changes the flats
The modular approach developed through the CTP has also informed flats with beam- and column-free living spaces. For residents, the practical advantage is flexibility: fewer structural obstructions in the living area can make it easier to configure a home for different family needs over time.
HDB says this design has already been rolled out to six other projects, including projects in Bayshore, Bukit Merah, Kallang/Whampoa and Mount Pleasant. That is one of the clearest signs that the Tengah testbed is already influencing projects beyond Tengah itself.
04 · Smarter heavy lifting is aimed at safety as well as speed
One trial at Garden Waterfront involved SkyJuster, a gyroscopic device used with a tower crane to control the rotation and stabilisation of heavy precast components. The goal is to reduce the number of workers who need to manually guide and adjust suspended components while they are being positioned.
HDB has also developed an Intelligent Lifting Frame with the National University of Singapore and A*STAR. Using real-time sensing, the system can detect imbalances and let a crane operator fine-tune lifting points remotely, helping keep loads level and reduce swaying.
HDB says the lifting-frame technology has the potential to improve productivity for the lifting process by up to 30%. It has been trialled at a Jurong West BTO project and is being refined before wider deployment.
05 · A 3D-printed arbour sits between the two projects
The CTP also tested 3D concrete printing on a piece residents will actually see: a botanic arbour at the common green between Garden Waterfront I and II.
The structure is made from 22 uniquely shaped curved segments printed at HDB's Centre of Building Research in Woodlands. HDB says segments measure up to 13.6 metres long, 3.7 metres wide and 3.6 metres high, making the arbour the largest 3D-printed freestanding landscape structure in an HDB development to date.
Through digital modelling, structural analysis and a combination of 3D printing with cast infill, HDB and Obayashi reduced the amount of concrete required by an estimated 50% compared with a conventionally built structure of equivalent size.
06 · The experiment reaches inside the home too
Garden Waterfront I and II will also be the first BTO projects in Tengah where flats are equipped with a Smart Adapter. HDB says the adapter will let residents monitor household electricity consumption in real time.
That makes the CTP broader than a construction-site exercise. The programme tests both how homes are built and how residents can get better information about energy use once they are living in them.
07 · What HDB plans to scale next
HDB says it will continue adapting successful CTP techniques across its building programme, including more standardised precast components. It also plans to explore the growing capabilities of artificial intelligence and advanced robotics with industry and research partners.
The useful takeaway is not that every future BTO will immediately copy every Garden Waterfront feature. Different projects have different constraints. The significance of the Tengah testbed is that HDB now has a completed project from which it can measure real construction performance before taking individual systems wider.
08 · Sources and live checks
This report was checked against the Housing & Development Board's 18 September 2026 release on the first Construction Transformation Project. It is the primary source for the completion date, productivity target, construction systems, lifting technologies, 3D-printed arbour, Smart Adapter and wider-rollout details reported here.
Last checked: 19 September 2026. Completion and rollout timings can change; for project-specific housing updates, use current HDB notices and official project information.