How Long Does HDB Renovation Take? Singapore Timeline 2026 (BTO & Resale)
🔍 An HDB renovation in Singapore takes 8–10 weeks of on-site works for a BTO flat and 10–14 weeks for a resale flat in 2026. Add 2–4 weeks for design, quotation and permit approval beforehand. Most homeowners should plan 3 to 4 months from first consultation to move-in, longer if the flat needs full rewiring or major hacking. |
“How long will this take?” is the second question every homeowner asks us, right after “how much will it cost?”. The honest answer depends on three things: whether the flat is new or resale, how much hacking and wet work is involved, and how quickly design decisions are made.
This guide breaks the HDB renovation timeline down week by week, explains what slows projects down, and shows how to plan your move-in date with confidence.
HDB Renovation Timeline at a Glance
Phase | BTO Flat | Resale Flat |
Design and quotation | 2–3 weeks | 2–4 weeks |
Permit approval | 1–2 weeks (overlaps design) | 1–2 weeks (overlaps design) |
Hacking and demolition | 0–3 days | 1–2 weeks |
Electrical and plumbing | 3–5 days | 1–2 weeks |
Wet works (tiling, waterproofing, screeding) | 1–2 weeks | 2–3 weeks |
Carpentry fabrication + installation | 4–5 weeks (fabrication overlaps wet works) | 4–5 weeks |
Painting, fittings, lighting, cleaning | 1–2 weeks | 1–2 weeks |
TOTAL on-site works | 8–10 weeks | 10–14 weeks |
Before Works Start: Design, Quotation and Permits
The design phase decides whether everything after it runs smoothly. In 2–4 weeks your designer should measure the flat, agree the layout, produce 3D visuals, finalise carpentry drawings and confirm every material choice. A clear, itemised quotation comes out of this phase, not before it.
Your HDB-registered contractor then applies for any permits needed for hacking, tiling and bathroom works. Read our guide to HDB renovation rules and permits so you know which works need approval and which do not.
✏️ YuTing, Founder & Lead Interior Designer: The fastest renovations are the ones where every decision is made before the first hammer swings. If you are still choosing tiles in week four of works, the whole schedule waits for you. We lock the design, the materials and the carpentry drawings first, then we build. |
Week-by-Week: A Typical 4-Room Resale Renovation
Week | What Happens On Site |
Week 1 | Site protection, hacking of old tiles, kitchen and built-ins, debris removal |
Week 2 | Electrical rewiring and new points, plumbing re-routing, concealed piping |
Week 3 | Bathroom waterproofing and ponding test, floor screeding |
Weeks 4–5 | Wall and floor tiling, kitchen and bathroom wet works complete |
Weeks 5–6 | Ceiling works, cove lighting, partition walls; carpentry in fabrication off site |
Weeks 7–9 | Carpentry delivery and installation: kitchen, wardrobes, TV console, shoe cabinet |
Week 10 | Vinyl flooring (if used), painting, lighting and sanitary fittings |
Weeks 11–12 | Touch-ups, defect walkthrough, chemical cleaning, handover |
A BTO flat usually skips most of weeks 1–3, which is why it can be handed over in 8–10 weeks. New BTO bathrooms also cannot have their wall and floor tiles hacked in the first three years, so most BTO bathrooms get an overlay or are kept as they are.
HDB Renovation Working Hours and Rules
• Renovation works: 9am to 6pm, Monday to Saturday
• Noisy works (hacking, drilling, grinding): 9am to 5pm on weekdays only
• No renovation works on Sundays and public holidays
• A renovation notice must be displayed at your main door during works
• Only HDB-registered renovation contractors can carry out works that need a permit
Because noisy works cannot happen on Saturdays, hacking-heavy resale projects effectively lose one day a week in their first fortnight. Factor this into your timeline.
What Causes Renovation Delays (and How to Avoid Them)
Cause of Delay | Typical Impact | How to Avoid It |
Design changes after works start | 1–3 weeks | Finalise layout, materials and carpentry drawings before day 1 |
Outsourced carpentry backlog | 2–4 weeks | Choose a team with in-house carpentry and its own factory slots |
Special-order tiles or fittings | 1–4 weeks | Confirm stock and lead times during the design phase |
Failed ponding test | 3–5 days | Use an experienced waterproofing crew and allow curing time |
Permit not approved in time | 1–2 weeks | Submit applications as soon as the layout is fixed |
Public holiday clusters | Several days | Avoid planning hacking around Chinese New Year and Deepavali |
Before you sign, use our list of questions to ask your renovation contractor to confirm who builds the carpentry, how the schedule is tracked and what happens if a milestone slips.
How TDF Keeps Projects On Schedule
• Design and quotation completed before any site work is booked
• In-house carpentry, so fabrication starts while wet works are still running
• One designer as the single point of contact from first meeting to handover
• Weekly progress photos and a shared milestone schedule
• A defect walkthrough before handover, not after you move in
This is how we approach every full home renovation in Singapore: plan the whole job first, then run the trades in the right order with no waiting time between them.
💬 Planning your move-in date around a BTO key collection or a resale completion? YuTing and the TDF team will map out a realistic renovation timeline for your flat in your first consultation. Message Rachel on WhatsApp to book a free design consultation. |
FAQ — 5 Questions & Answers
Q1: How long does an HDB renovation take in Singapore?
A: A full HDB renovation in Singapore usually takes 8–10 weeks of on-site works for a BTO flat and 10–14 weeks for a resale flat. Add 2–4 weeks before that for design, quotation and permit approval, so most homeowners should plan for roughly 3 to 4 months from first consultation to move-in.
Q2: Why does a resale HDB renovation take longer than a BTO?
A: Resale flats usually need hacking of old tiles, kitchen cabinets and built-ins, partial or full rewiring, plumbing replacement and new waterproofing in the bathrooms before any new finishes go in. Each of these adds days, and waterproofing needs curing and a ponding test before tiling can continue.
Q3: What are the HDB renovation working hours?
A: Renovation works in HDB flats are allowed from 9am to 6pm, Monday to Saturday. Noisy works such as hacking and drilling are limited to 9am to 5pm on weekdays. No renovation works are allowed on Sundays and public holidays. Always check the latest HDB guidelines, as rules can be updated.
Q4: Do I need an HDB permit before starting renovation?
A: Yes, for many works. Hacking of walls, floor tile replacement and certain bathroom works need an HDB renovation permit, which your HDB-registered contractor applies for. Simple works like painting and loose furniture do not. Permit approval should be built into your timeline before carpentry and hacking are scheduled.
Q5: How can I avoid renovation delays in Singapore?
A: Finalise the design and every material selection before works begin, confirm carpentry drawings early so the factory can start fabrication during the wet works, and choose a team that runs design and carpentry in-house. Most delays come from late design changes and waiting on outsourced carpentry, not from the construction itself.
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