HDB Renovation Permit: How to Apply

In almost every case, you do not apply for an HDB renovation permit yourself. Your renovation contractor must be registered under HDB's Directory of Renovation Contractors (DRC), and it is that contractor who submits the renovation permit application to HDB on your behalf, usually through the HDB InfoWEB or HDB's electronic system. Your job as the flat owner is to pick a DRC-registered contractor, agree on the exact scope of work, and give consent so the permit can be filed.

This matters because doing renovation work that needs a permit without one can lead to enforcement action, and you may be told to reinstate the flat at your own cost. The good news is that many minor works do not need a permit at all, and for the works that do, an established contractor handles the paperwork as part of the job. This guide walks through who applies, which works need a permit, what is submitted, how long it takes, and the mistakes that cause delays.

Who actually applies for the HDB renovation permit?

The renovation contractor applies, not the homeowner. HDB only accepts renovation permit applications from contractors listed in the Directory of Renovation Contractors (DRC). If a contractor is not on that list, they cannot pull a permit, which is a strong signal to avoid them for permit-required work.

As the flat owner, you are still responsible for making sure the permit exists before work starts. Ask your contractor for the permit reference once it is approved, and keep a copy. If you engage separate tradesmen for different jobs, each permit-required job needs to be covered.

• Contractor must be DRC-registered to apply.
• Homeowner gives consent and confirms the scope.
• Owner should keep the approved permit on record.
• Tenants generally need the flat owner's involvement to proceed.

Which renovation works need an HDB permit?

Not every job needs a permit. Permits are required for works that affect the structure, layout, safety, or shared building elements of the flat. Cosmetic or like-for-like replacement work usually does not.

Because HDB updates its rules and some works are simply not allowed regardless of permit, always confirm the current requirement for your specific flat and block before committing to a design.

• Usually needs a permit: hacking or removing walls, relocating or building new walls, waterproofing works in wet areas, changing floor finishes in certain cases, electrical rewiring beyond simple like-for-like, and demolition of built-in structures.
• Usually does not need a permit: painting, installing new cabinetry or wardrobes, replacing existing fixtures with similar ones, and general furnishing.
• Never allowed: hacking structural walls or reinforced concrete elements, and works that breach HDB's non-permissible list, even with a contractor's assurance.

What documents and details go into the application?

The contractor prepares and submits the application, but you speed things up by having the scope and supporting information ready. The core of any application is a clear description of the works, the flat address, and owner consent.

For works that touch structure or wet areas, HDB may require additional supporting documents such as plans or a Professional Engineer (PE) endorsement. Ask your contractor early whether your job triggers any of these, because sourcing a PE report adds time.

• Flat address and owner details.
• A clear scope of works and, where needed, layout or hacking plans.
• Owner's consent to the application.
• PE endorsement or additional plans for structural or waterproofing-related works, if required.

How long does approval take, and when can work start?

Straightforward permits are often approved quickly, sometimes within a few working days, while applications needing plan review or a PE endorsement take longer. Treat the timeline as a range and build a buffer into your schedule rather than assuming instant approval.

Work that needs a permit should only begin after the permit is approved. Starting early to save time is a common and avoidable mistake. Renovation is also restricted to permitted hours and days set by HDB, and noisy or hacking works have tighter limits, so factor this into your timeline too.

How to get the work done the right way

The simplest way to stay compliant is to engage a DRC-registered contractor who handles the permit as part of the project. A capable HDB renovation contractor will tell you upfront which parts of your scope need a permit, prepare the submission, arrange any required PE endorsement, and schedule the noisy works within HDB's permitted hours.

When you brief a contractor, be specific about what you want changed. Clear scope means an accurate permit, fewer variations later, and a smoother inspection if HDB checks the site. It also protects you: if the contractor pulls the correct permit, responsibility for compliant execution sits where it should.

What happens if you skip the permit?

Carrying out permit-required work without approval, or doing non-permissible work, can lead to HDB enforcement. You may be required to reinstate the affected area at your own expense, and unauthorised structural changes can create safety and resale problems down the line.

If you have already started or inherited unauthorised works, speak to a DRC-registered contractor about regularising or reinstating them. It is far cheaper to fix the process than to fight enforcement after the fact.

Frequently asked questions

Can I apply for an HDB renovation permit myself? No. HDB accepts permit applications only from contractors listed in the Directory of Renovation Contractors, so your DRC-registered contractor submits it on your behalf while you provide consent and confirm the scope.

Does painting or installing cabinets need a permit? Generally no. Cosmetic works like painting, and installing new wardrobes or cabinetry, usually do not require a permit. Permits are for works affecting structure, layout, wet-area waterproofing, or safety, so check your specific scope.

How long before I can start renovation after applying? Only start permit-required work once the permit is approved. Simple permits may be granted within a few working days, while applications needing plans or a Professional Engineer endorsement take longer, so build in a buffer.

What happens if I renovate without a permit? HDB can take enforcement action and may require you to reinstate the flat at your own cost. Unauthorised structural or non-permissible works also create safety and resale risks, so it is best to keep everything permitted from the start.