HDB Renovation Permit: What Needs HDB Approval and What Doesn't

Ron Quek

16 hours ago

5 min read

Before the first wall is hacked or the first tile is lifted, one question decides whether your renovation is legal: does this work need an HDB renovation permit? Some works do, many don't, and a few are not allowed at all. Getting it wrong can mean stopping work, reinstating your flat and a fine, so it is worth knowing the basics before you sign a quotation.

This guide summarises what HDB publishes on permits for building works. It is general information, not legal advice. HDB's pages and your flat-specific renovation guide are the final word, so check them for your block before you fix a scope (HDB building works guidelines).

Rule one: use a Directory of Renovation Contractors (DRC) contractor

HDB says you are responsible for the renovations in your flat, and the Housing & Development (Renovation Control) Rules 2006 require you to engage only contractors from the Directory of Renovation Contractors, including for works that do not need a permit (HDB). Upon conviction, a flat owner who did not engage a DRC contractor, or who breached HDB's renovation rules, can face a fine of up to $5,000. HDB also notes that it does not endorse or guarantee the quality of DRC contractors, so listing is not a quality guarantee (HDB).

Works that need an HDB renovation permit

HDB's building works table marks these common items as Permit Required (HDB):

Demolishing or altering internal walls, including lightweight partition walls such as hollow block, brick, drywall and Ferrolite walls. HDB's approval is needed before any wall demolition or alteration
Demolishing non-load-bearing RC elements such as partition walls, stiffeners and lintels, which also requires a Professional Engineer to supervise
Replacing floor finishes such as ceramic, homogeneous, terrazzo, marble or other tiles
Replacing internal wall finishes up to ceiling level
Topping up the floor with lightweight screed or block at the balcony, kitchen, bathroom or toilet
Repositioning internal door entrances
Bathroom and toilet works: enlarging a bathroom after the first 3 years from completion of the block, replacing the bathroom vent, and replacing bathroom wall or floor finishes after the first 3 years

HDB adds that newly built flats have a 3-year restriction on removing wall and floor finishes in bathrooms and toilets, so a bathroom redo in a new BTO is not something to plan for in year one. Our HDB bathroom renovation guide covers the layout side.

Works that don't need a permit, but still have rules

For the items HDB marks No under permit required, you are still required to follow the guidelines. Work that breaks them is treated as unauthorised (HDB). Examples from the same table:

New partitions: a 63mm hollow block wall, 80mm glass block wall or gypsum partition. If you create a room for habitation, it needs adequate natural lighting and ventilation, and the fire escape route should be direct and not pass through another room
False ceilings, cornices and pelmets: a minimum 2.4 metre clearance for false ceilings measured from the finished floor, and non-combustible materials. Our lighting plan guide covers cove lighting
Wall finishes: wallpaper, plastering, spray painting and solid timber or mirror wall panels, plus laying finishes over existing ones with adhesive (up to 13mm, with no third layer)
Flooring: laying vinyl, carpet or linoleum, laying or replacing parquet or timber flooring, and laying new finishes over existing ones using adhesive only
Doors and kitchen: replacing internal doors with ornamental timber or plastic doors, and building kitchen counter tops

Read the permit column and the conditions column together. A 'No' still comes with limits, and the HDB page notes that where an item isn't in the renovation guide, or your measurements and technical details differ, you need HDB's approval before starting.

Works HDB does not allow

HDB lists renovations that are disallowed because they overload the structure, affect the facade, create a nuisance or fire hazard, or breach lease or statutory rules (HDB). Examples include:

Hacking structural members such as RC walls, columns, beams and slabs
Plastering of ceilings
Partitioning with combustible or toxic-emission materials such as plywood, plastics or asbestos
Raising the floor level beyond 50mm in total, including finishes
Removing or tampering with safety railings or grilles originally provided by HDB or the developer

If a designer sketches an open-plan idea that needs a wall your flat's structure doesn't allow to go, it is better to learn that at the concept stage than after the quotation is signed.

How the permit application works

You authorise your contractor to submit the electronic renovation application. They attach the acknowledgement form you have signed, and you get an SMS from HDB when the submission is received (HDB)
Floor plan: use the one from your sales brochure, or buy a copy at $5 from HDB
New flats: you need a utilities account (water and electricity) with SP Services before a permit can be granted
Qualified Person: some works, such as demolishing non-load-bearing RC elements, need a QP or PE. HDB will tell you and your contractor if yours does
Start only after approval: HDB says to commence renovation only after obtaining the permit for works that need one. If it finds unauthorised work, it can require you to stop, correct or remove it and reinstate the flat, or charge an administrative fee if the work may stay

The permit also sets your window to finish. HDB states approved renovations must be completed within 1 month of the permit date for existing blocks, 3 months for newly completed blocks, and 2 weeks for window-only works (HDB). Work backwards from this when you plan the schedule.

Other licensed trades

A DRC contractor does not replace every licence. HDB lists an EMA-licensed electrical worker for electrical installation, a PUB-licensed plumber for water service and sanitary works, an EMA-licensed gas service worker for gas works, and a BCA-approved window contractor listed with HDB for windows (HDB). If you are adding extra power points, ask who holds the electrical licence. Our smart home wiring guide covers that planning in more detail.

Where the permit fits in your timeline

Mark each item in your scope as permit or no permit at the concept stage, confirm who submits the application, and don't schedule hacking before approval. Then add the neighbour notice and work hours (see our renovation hours and neighbour notice guide). When works finish, HDB asks you to inform your HDB Branch. For the overall sequence, read our renovation process guide and BTO renovation timeline.

Questions to ask your contractor

Are you on HDB's Directory of Renovation Contractors?
Which items in my scope need a permit, and which do not?
Who submits the application, and when do I sign the acknowledgement?
Will a Qualified Person or PE be needed, and who engages them?
Is the permit timing reflected in the schedule in my quotation? See our quotation red flags guide.

Where Blackwoods Interior fits

Name: Blackwoods Interior · Blackwoods Interior Pte. Ltd.
UEN: 201909521M
CaseTrust: accredited renovation business, valid through 28 April 2028 (what CaseTrust means)
Contact: WhatsApp 8754 3212 for a free 30-minute consult (Mon-Sat, about 10:00-19:00 SGT) · Hello@bwi.sg
Showroom: 62 Ubi Rd 1, #01-15 Oxley Bizhub 2 (by appointment) · office at 125 Bukit Merah Lane 1 #04-178

Next step

Planning an HDB or BTO renovation and not sure which works need approval? WhatsApp 8754 3212 or email Hello@bwi.sg with your flat type, estate and the changes you have in mind for a free 30-minute consult. We'll talk through your ideas before you commit to a scope.

Source: HDB renovation pages, checked 12 October 2026. Rules can change, so confirm on HDB before you start. Cover image: an illustrative AI-assisted concept, not a completed Blackwoods project.

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