HDB renovation permit and rules: what Singapore flat owners need to know

Renovating an HDB flat is regulated, and the rules protect your neighbours and the building. Getting them wrong can mean stop-work orders, fines and paying to put things back. This guide covers the basics; HDB sets the detailed rules and updates them from time to time, so always confirm the current requirements with HDB before you start.

Do I need an HDB renovation permit?

Works that affect the flat's structure or services, such as hacking walls, generally need a renovation permit from HDB before they begin. Smaller cosmetic jobs like painting typically do not. Your designer or contractor should tell you which of your planned works need approval.

The permit is applied for by the renovation contractor, not by you. Only contractors registered with HDB can apply, which is why checking your contractor's HDB registration comes first. Approval for straightforward applications usually takes a few working days, so build that into your timeline.

What you cannot hack

Structural elements such as load-bearing walls, columns, beams and slabs cannot be removed. Many internal partition walls are non-structural and can be hacked with a permit, but you should never assume. Ask your contractor to confirm which walls in your specific flat are structural, using HDB's records, before the layout is designed around removing them.

Working hours and noise

Renovation work is limited to set days and times. In general, noisy works such as hacking and drilling are allowed on weekdays during limited daytime hours, general renovation work has slightly wider hours, and no renovation is allowed on Sundays or public holidays. HDB has adjusted these hours over time, so check the latest schedule on HDB's website and make sure your contractor's timeline respects it.

It is also good practice, and often expected, to let your neighbours know before noisy works start.

What happens if the rules are broken

Hacking without a permit, removing a wall you were not allowed to, or working outside approved hours can lead to fines and an order to reinstate the work at your cost. As the flat owner you are responsible, even if your contractor made the mistake.

A quick checklist before work starts

• Confirm your contractor appears in HDB's directory of registered renovation contractors, and note the licence number. Here is how to check.
• Ask in writing who is applying for the permit and when approval is expected.
• Get the list of works that need approval and make sure none start before it is granted.
• Confirm the schedule respects permitted working days and hours.
• Keep copies of the permit and your contract.

Looking for a firm that works on HDB flats? See HDB interior designers on Layered, where firms can list their HDB licence number.