HDB Renovation Timeline: From Key Collection to Move-In
HDB Renovation runs on a clock the moment you collect your keys, and the single most important fact is this: you must apply for the renovation permit within 3 months of key collection for a new flat, or within 3 months after resale completion if you bought resale. That permit is only valid for 3 months from approval, so every bit of work and the final HDB inspection has to finish inside that window. Miss it and you're reapplying, which means more waiting and a flat you can't touch. Here's a realistic week-by-week path we've walked with many homeowners.
Weeks 1 to 2: Design, Quote and Lock the Contractor
Start by shortlisting a BCA-licensed contractor on HDB's Directory of Renovation Contractors (DRC) — you can't engage an unregistered firm for regulated works. Get at least two itemised "Open Book" quotes so you can see carpentry, tiling and hacking as separate lines. Use these weeks to finalise the layout, especially custom wardrobes and the kitchen, because the drawings drive the permit application. Don't sign until the scope is clear; changes after submission cost time.
Weeks 3 to 4: Permit Application and Approval Wait
Your contractor lodges the permit through HDB's system on your behalf. Lead time varies, but budget two to four weeks of waiting before approval lands, and remember the 3-month validity only starts once it's approved. This is a good stretch to order long-lead items like doors, quartz tops and custom cabinetry so they arrive when the carcass is ready. We've seen delays mostly come from missing drawings, so submit complete plans the first time.
Weeks 5 to 8: Hacking, Wet Works and Carpentry
Once approved, hacking and drilling kick off — but only between 9am and 5pm on weekdays and Saturdays, never on Sundays or public holidays. Toilets get re-tiled and waterproofed first since they can't be shifted, then flooring and the kitchen wet zone follow. Custom carpentry for wardrobes and the TV console is measured and built during this block so it slots in as the dust settles. Keep the buffer in mind; resale flats with full hacks eat more of this window than a BTO.
Weeks 9 to 11: Finishing, Painting and Fixtures
Painting, lighting, the kitchen cabinet installation and final silicone go in now. This is when the flat starts to feel like home and you can plan furniture delivery. Double-check the hard rules haven't been bumped — no structural wall, beam or column hacked, main door position unchanged, corridor-facing windows left in approved colour and material. Small oversights here are exactly what fail the inspection later, so walk the flat with the contractor before you call it done.
Week 12: HDB Inspection and Deposit Refund
When works wrap, HDB carries out a post-renovation inspection to confirm there are no illegal alterations. The renovation deposit — S$500 for up to 3-room flats and S$1,000 for 4-room and larger — is refunded after that inspection clears. Book the inspection early in the window so you're not squeezed at the end. Once it passes, you're free to move in, and the 3-month clock that started at approval finally stops ticking.
Build in Buffer for Your HDB Renovation Timeline
No flat finishes exactly on schedule, so treat the 12 weeks as a target, not a promise. Material lead times, a rainy hack delay or a fixture back-order can each push a week. If you'd rather not juggle all of this yourself, whole-home customization handled by one team keeps design, carpentry and the permit in a single plan, which trims the coordination gaps that blow timelines. Start early, keep your documents tight, and the move-in date stays where you planned it.
