How long does HDB renovation take?
In Singapore, most renovation timelines fall within these ranges:
- BTO: 8–12 weeks
- Resale: 10–16 weeks
BTO flats are faster due to fewer structural changes, while resale units require additional work such as hacking, rewiring and plumbing upgrades.
Typical renovation timeline breakdown
1. Planning & Design (2–4 weeks)
Layout planning, design concept, quotation and material selection.
2. Permit Approval (1–3 weeks)
Submission of HDB permits, especially for hacking and wet works.
3. Hacking & Demolition (3–7 days)
Mainly for resale units.
4. Wet Works (2–3 weeks)
Tiling, waterproofing and floor preparation.
5. Carpentry Production (3–5 weeks)
Fabrication is done off-site and often overlaps with other phases of the renovation timeline.
6. Installation (2–3 weeks)
Carpentry, electrical and painting.
7. Final Touch & Handover (1 week)
Defect rectification and cleaning.
When can you actually move in?
Most homeowners cannot move in immediately after completion. You should allow an additional 1–2 weeks for cleaning, airing and final adjustments.
Why renovations get delayed
1. Project sequencing issues
Renovation follows a Gantt chart sequence. If one stage is delayed, everything after it shifts. For example, if aircon piping is not completed, tiling and carpentry may be delayed as well.
One common example is the kitchen sink. If the project uses an undermount sink, the sink needs to be installed before the countertop can be placed. If the sink is delayed, the kitchen installation is delayed too.
2. External contractors
Engaging separate vendors often leads to coordination issues and schedule misalignment. If one external contractor cannot keep to the project sequence, the rest of the work can be pushed back.
3. Owner-supplied materials
Items sourced from overseas can be delayed or incorrect, which stops installation work. This has become increasingly common when homeowners order kitchen systems, taps, accessories or fixtures from overseas platforms.
4. Late decisions & design changes
Indecision, adding features late or changing cabinet designs midway can cause major delays. When clients continue exploring materials for too long, or cannot agree on finishes, the timeline is affected because drawings, procurement and coordination cannot be finalised.
Small changes can also create large ripple effects. If a cabinet layout is revised after lighting or electrical points have already been planned, those drawings and sequences may need to be redone.
How to avoid delays
Finalise design early
Understand project sequencing
Confirm critical materials early
Avoid too many contractors
Align decisions early
Final perspective
Renovation delays are rarely caused by construction itself. More often, they come from decisions, coordination and planning. When the sequence is understood clearly and key materials are confirmed early, the move-in timeline becomes much more predictable.
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