HDB Renovation Guides
Practical, rules-based guides to renovating an HDB flat in Singapore — written by an HDB-Approved Contractor working inside these rules since 1990.
Start here: the rules
- HDB Renovation Rules — permits, working hours, what needs approval and what does not.
- HDB Renovation Timeline: BTO vs Resale — permit completion windows and how long a renovation really takes.
- Interior Designer vs Renovation Contractor — which one you actually need.
By flat type and project
- 4-Room BTO Renovation: A Complete Guide — scope, the 3-year rule, and sequence for Singapore’s most common flat.
- HDB Renovation by Flat Type — 2-Room Flexi through Executive.
More guides
- HDB Maisonette & Executive Flat Renovation — two-level planning and the staircase question.
- HDB Storage Ideas — making a small flat work, room by room.
- HDB Flooring Guide — vinyl versus tiles, and what needs a permit.
- Condo Renovation: MCST Rules — approvals, deposits and by-laws.
Room by room
- HDB Kitchen Layouts by Flat Type — galley, L-shape, U-shape or island: which fits.
- HDB Kitchen Lighting Guide — the three layers, and why to plan it before the carpentry.
- HDB Bathroom Renovation Ideas — the 3-year rule, overlay versus full re-waterproofing.
- Industrial Interior Design for HDB Flats — industrial style done right, within HDB’s rules.
- Open Concept Kitchen HDB — gas, ventilation and layout rules for an open kitchen.
- Landed House Renovation Guide — URA, BCA and Qualified Person essentials for landed homes.
- Office Renovation & Fit-Out Singapore — approvals, space planning and reinstatement for offices.
- HDB Feature Wall Ideas — materials, costs and what HDB allows for accent walls.
- Scandinavian Interior Design for HDB Flats — light, warm, functional Scandi style done within HDB rules.
- HDB False Ceiling Ideas — types, the 2.4m height rule, cost and permits.
- Small HDB Space-Saving Ideas — multi-functional furniture and built-in storage for compact flats.
- HDB Renovation Cost Guide — a realistic cost breakdown by flat type and scope.
- Minimalist Interior Design for HDB — clean-lined, clutter-free minimalism in a flat.
- Japandi Interior Design for HDB — warm Japanese-Scandi minimalism, Muji-style.
- How to Choose a Renovation Contractor — licensing, red flags and the questions to ask.
Design and space planning
- HDB Interior Design Styles — which styles suit a Singapore flat, and what each demands.
- HDB Partition and Room Divider Ideas — zoning a flat without building walls.
Our services
HDB interior design · kitchen renovation · toilet and bathroom renovation · bedroom renovation · living room renovation · renovation contractor
How to use these guides
Renovating an HDB flat in Singapore is not mainly a design problem — it is a rules problem with a design layer on top. What you may hack, when noisy work may run, how thick a floor finish may be, which trades must be licensed, and how long HDB gives you to finish are all fixed before a single concept is drawn. Almost every renovation that goes wrong went wrong at that stage, not at the styling stage.
These guides are written in that order. Start with the rules and the timeline so you know the shape of what is possible, then move to the room-level and design guides once you know what your flat and your permit will actually allow.
If you are collecting BTO keys
Read the renovation timeline first — newly completed blocks get a 3-month completion window from the permit date, and a 3-year restriction on removing the original bathroom finishes that catches most first-time owners after their design is already drawn. Then read the 4-Room BTO guide if that is your flat type.
If you have bought a resale flat
Your permit window is shorter — generally 1 month in existing blocks — and your scope is usually wider, because the old flat has to come out before the new one goes in. Older units frequently need re-wiring, re-piping or re-waterproofing that only surfaces once work starts. Start with the rules guide, then the bathroom guide, since wet works set the pace of the whole project.
If you are still choosing who to appoint
Read interior designer versus renovation contractor. Whichever you choose, check they are listed in HDB’s Directory of Renovation Contractors — HDB requires this for all renovation works in its flats, including works that need no permit.
A note on sources
These guides reference HDB’s published renovation requirements, and PUB and gas-supply licensing requirements for the relevant trades. Rules are periodically updated and some conditions differ between newly completed and existing blocks, so always confirm the current requirements for your own block and permit. Where a guide describes typical scope or timing, it is describing what is common — not a guarantee for your flat.
Who writes these
FC Interior Design has been designing and building in Singapore since 1990 and is an HDB-Approved Contractor (licence HB-09-2619C), holding CaseTrust, bizSAFE Star and SME100 recognition. These guides reflect how we actually scope and sequence work inside HDB’s rules.
Frequently asked questions
Do I need an HDB permit to renovate my flat?
Some works do and some do not. Wall demolition or alteration, floor-finish replacement beyond the allowed overlay, bathroom enlargement and vent changes need HDB’s written approval before work starts. Carpentry, false ceilings, platforms and vinyl flooring generally do not.
How long does an HDB renovation take?
HDB sets a completion window from the permit date — generally 3 months in newly completed blocks, 1 month in existing blocks, and 2 weeks for minor works. Resale flats usually need more work within a shorter window, which is why scope should be settled before the permit is filed.
Can I renovate a new BTO flat’s bathrooms immediately?
You can renovate, but in newly completed blocks the original bathroom and toilet wall and floor finishes cannot be removed for the first 3 years. Overlay finishes, fittings, lighting and ventilation remain open from day one.
Who is allowed to renovate an HDB flat?
Only contractors listed in HDB’s Directory of Renovation Contractors may carry out renovation works in HDB flats — including works that need no permit. FC Interior Design is an HDB-Approved Contractor, licence HB-09-2619C.
Planning your renovation?
Tell us your flat type and whether it is a BTO or resale unit, and we will tell you what is actually available to you — permits, constraints and sequence — before any design work starts.
FC Interior Design — HDB-Approved Contractor (licence HB-09-2619C), Singapore since 1990.
Call +65 6444 0555 or WhatsApp +65 9888 2723.
More reading: all our HDB renovation guides.