Article
Why Choose a Design and Build Approach for Your Project?
Singapore’s construction demand hit S$44.2 billion in 2024, the highest since records began, with projections of S$47-53 billion in 2025 driven by transport, commercial, and housing projects like Changi Terminal 5. Project owners in both public and private sectors are facing tighter timelines and higher performance expectations.
Amid this surge, the design and build (D&B) approach stands out by integrating design and construction under one team, delivering projects up to 30% faster than traditional methods while cutting costs through unified accountability. The Design & Build (D&B) delivery method is rapidly becoming the preferred solution.
For busy professionals juggling tight deadlines and rising material prices, D&B offers a punchy path to on-time, on-budget delivery in a market growing at 5.2% in 2025.
In the midst of rising costs, labour shortages, and productivity demands, Singapore’s builders increasingly require a model that reduces risk, accelerates timelines, and supports innovation. D&B provides exactly that.
The Pitfalls of Sticking to Traditional Design-Bid-Build
Professionals often default to traditional design-bid-build (DBB), assuming all architects and contractors bring quality and competitive pricing, but this mindset divides responsibility, which produces more inefficiencies.
In a high-stakes environment such as Singapore’s construction, DBB leads to misaligned teams, frequent change orders, and delays. Studies show it incurs up to 15% higher costs and extended timelines compared to integrated models.
As Singapore’s projects grow more complex with smart systems, sustainability requirements, and DfMA integration, DBB’s limitations become even more pronounced. Despite growing adoption of D&B, many project owners still cling to Design-Bid-Build (DBB), believing it offers better control through separate design and construction contracts. However, real-world data paints a different picture.
The Power of Integrated D&B Delivery
Design and Build revolutionises projects by uniting design and construction from day one, enabling early contractor input for buildable, innovative solutions that align with Singapore’s sustainability goals. Local successes like the ISK Warehouse and Kranji Secondary School demonstrate swift completion without quality trade-offs, backed by surveys where 75% of Singapore users reported 5-30% time savings.
A study found D&B projects achieved an average 14% reduction in delivery time and about 3% in cost compared to DBB, based on project manager surveys and actual outcomes. NIST-sponsored research across multiple sectors showed D&B outperforming DBB in schedule performance, with statistically significant advantages, though cost differences were less consistent. Analysis of over 350 projects reported D&B yielding 12% faster construction speed, 33.5% faster overall delivery, 6.1% lower costs, 5.2% less cost growth, and 11.4% less schedule growth versus DBB.
These factors make D&B not just an alternative but an ideal model for modern residential, industrial, and institutional builds.
Practical Steps to Adopt D&B
Some still worry that the Design and Build process may sacrifice design flair for speed, yet Singapore evidence proves it matches DBB on aesthetics and functionality, with buildability prioritised through client-led briefs and single-point liability.
Concerns over workmanship fade as integrated teams reduce errors, evident in public projects meeting BCA standards without compromises. Cost unpredictability fears are dispelled by fixed-price models and phased overlaps, delivering 6-15% savings in volatile markets, far outweighing DBB’s change-order pitfalls.
1. Evaluate Project Suitability
Choose D&B for new builds under S$50 million GFA, especially commercial or institutional. For institutional projects like schools or offices (often S$10-25 million range), D&B leverages contractor expertise for practical, innovative designs tailored to client needs, such as sustainability features.
- Best for: new builds, simple-to-complex developments below S$50M GFA.
- Less suitable for: renovations or projects requiring heavy site-by-site customisation.
2. Choose the Right D&B Firm
Use BCA’s contractor directories to source BCA-registered D&B firms with DfMA and BIM credentials via official directories to secure 20%+ time reductions and fixed-price certainty.
Do not default to the lowest price. Evaluate proposals based on the team’s ability to deliver project goals, demonstrate value engineering capabilities, and show experience in similar D&B projects. Give preference to D&B firms where the contractor and designer have a proven, collaborative working relationship. Trust and transparent communication are paramount in this model.
3. Define Strong Tender Requirements
Select the contractor based on their fee, overheads, and an outline design/cost proposal. The selected contractor should work with the client’s team to finalise the detailed design and negotiate a Guaranteed Maximum Price (GMP) for the construction phase. This enables early contractor input and detailed design refinement before price lock-in. Here are other factors to consider:
- Fixed-price contracts
- Clear deliverables and KPIs
- Mandatory BIM Level 2 or higher
- Sustainability targets (Green Mark certification)
4. Pilot D&B Before Scaling Organisation-Wide
Launch D&B pilots on mid-scale fit-outs, benchmarking against DBB metrics for cost, time, and defects to build internal case studies. Understand that while D&B offers high cost certainty, changes requested by the client post-contract can be expensive, as the contractor has assumed full risk.
D&B as the Future-Proof Choice
D&B slashes risks and aligns perfectly with BCA targets for sustainable, high-productivity builds amid transport and commercial booms. D&B is a strategic approach that strengthens project outcomes across efficiency, cost, safety, and sustainability.
Many project owners voice initial concerns about switching to D&B. Here’s what the data shows:
1. “Will quality or aesthetics suffer?”
Singapore case studies show D&B projects match or exceed DBB performance in design quality and functionality. With early contractor involvement, designs become more buildable, reducing defects.
2. “Will I lose design control?”
This model has been tested extensively in public sector projects, with no reduction in architectural quality. Clients retain control through:
- Detailed briefs
- Design checkpoints
- Value engineering workshops
3. “Is cost truly predictable?”
Yes. D&B reduces variation orders and utilises overlapping phases, resulting in 6 to 15% cost savings, which is especially valuable during Singapore’s labour-tight conditions.
4. “Is it risky to depend on one contractor?”
Single-point accountability reduces risk, not increases it. Responsibility becomes clearer, with fewer disputes and faster resolution.Whether you represent a consultancy, developer, contractor, or facility owner, now is the ideal time to assess D&B feasibility for your next build.
Act Today
Singapore’s projected growth in construction demand from 2024 to 2025 makes this the perfect moment to adopt a delivery model that cuts risk, saves time, and enhances performance. If you’re planning to build soon;
- Refer to BCA’s D&B tender guidelines
- Consult project advisors for suitability assessments
- Share challenges or success stories to help refine industry practice
Connect with a certified D&B provider such as PRECISE Development today to fast-track your pipeline in this high-demand era.