An open kitchen or a larger bedroom may be part of the home you have in mind. Whether you’re collecting BTO keys or comparing HDB flats for sale, establish which changes are feasible before building your renovation budget around them.
For HDB renovation, the distinction is between work that needs approval, work allowed under stated conditions, and work that is prohibited. HDB’s renovation guidance explains that some works need a permit and others do not. A non-permit item still has to meet the relevant conditions.
A quotation saying “flooring works” or “kitchen renovation” leaves too much unanswered. What matters is whether the contractor proposes to remove existing finishes, alter a wall or retain what is already there.
Which HDB Renovation Works Need Approval?
Read the permit category and its limits together. The table draws on HDB’s building works guidelines and SCDF’s shelter rules. Approval is needed before permit-controlled work starts; a permit does not authorise a prohibited alteration.
Permit required
Partial or complete alteration of an internal lightweight partition; replacement of bathroom finishes after the restriction period.
Apply for the exact scope. Approval is not automatic; applicable technical conditions still apply.
No permit, subject to conditions
Adhesive-only floor overlays; false-ceiling installation.
The specific method must meet HDB’s conditions. “No permit” does not mean unrestricted work.
Not permitted
Removing new-flat bathroom finishes during the three-year restriction; removing the household-shelter door or damaging shelter structural elements.
Retain these protected features or redesign the proposal. The bathroom restriction is time-limited; the shelter rules are separate.
For example, a quotation to replace kitchen cabinets should say whether it also includes wall removal. Separating those items lets you compare a cabinet refresh with a proposed open-kitchen layout without treating them as the same job.
Can You Remove a Non-Structural Wall?
A partition’s appearance does not establish permission to remove it. HDB’s wall-work rules require approval for partial or complete demolition or alteration of internal lightweight partition walls, including brick walls and drywalls.
If you want to combine two bedrooms, have the proposed opening marked on the plan. A thin line on a drawing or a similar renovation next door does not establish that the wall is removable.
Under HDB’s application guidance, contractors submit the floor plan showing proposed wall demolition with the electronic renovation application. HDB also identifies works requiring a Qualified Person to certify or supervise them. Confirm whether that applies to your proposal before settling the price.
When comparing 4-room HDB flats, sketch your desk, bed and storage within the existing rooms too. If the wall opening is not approved, that alternative layout shows whether the home can still accommodate your routine.
What Can You Change in a New BTO Bathroom?
Bathroom finishes need particular care because of waterproofing. HDB’s bathroom and flooring guidelines restrict removal of bathroom and toilet wall and floor finishes for the first three years from the block’s completion date. That date is the reference point, rather than your key-collection date.
HDB’s renovation information allows new toilet floor finishes over existing finishes using adhesives, subject to the applicable requirements. Discuss a proposed overlay as a specific installation, rather than assuming that any chosen tile can be added.
For an overlay proposal, ask the contractor to show the finished height at the doorway and explain how water reaches the floor trap. For example, assess whether the proposed finish affects the clearance beneath the existing door before accepting a quotation that retains it.
Does New Flooring Always Mean Hacking?
The quotation should distinguish removal from overlaying. HDB’s MyNiceHome renovation guide says a permit is needed to remove existing floor finishes and replace them.
If one flooring quote includes hacking and another retains the old tiles, request separate prices for removal, disposal, preparation and installation. This reveals which work explains the difference and what extra cost might arise if the existing surface proves unsuitable.
During a resale viewing, photograph cracked tiles, uneven transitions and raised thresholds. Share those observations when requesting an assessment of what can be retained. A floor that looks acceptable in listing photographs may need a closer inspection before you choose the installation method.
What Is Not Allowed in a Household Shelter?
A household shelter needs separate treatment from ordinary rooms. SCDF’s shelter works document prohibits alterations likely to weaken its structural elements, as well as modifying or removing the shelter door and frame.
SCDF specifically permits limited drilling into internal shelter walls and ceiling slabs, up to 50mm deep, for inserts and removable screws. Its conditions include non-metallic inserts no longer than 50mm and removal of the fixtures within 48 hours of notification. This is a defined exception, not permission for unrestricted drilling.
For a storage proposal, ask the contractor to show which fittings use those permitted fixings and how the shelter door and ventilation remain usable. Compare that with freestanding storage if you prefer to avoid wall fixings; check its dimensions against the door swing before ordering.
Windows and Electrical Work Need the Right Specialists
For window installation or replacement, HDB’s window guidelines require a BCA-approved window contractor listed in HDB’s directory. HDB restricts replacement of full-height windows, including three-quarter-height and bay windows, with permission potentially available where a damaged frame needs complete replacement.
HDB’s application guidance directs owners to engage an EMA-licensed electrical worker for electrical work and a BCA-trained installer for air-conditioners. Ask who is carrying out each job, even when one renovation company coordinates the project.
HDB’s electrical works guidelines distinguish permit and non-permit installations; the flat’s electrical loading can affect the requirement. Avoid treating every new power point or every air-conditioner installation as having an identical approval position.
How Do You Arrange the Renovation Permit?
Begin with the flat and proposed scope. HDB’s Check Renovation Guidelines service provides block-specific restrictions. Review these with the contractor alongside your drawings.
HDB’s renovation responsibilities require a contractor listed in its Directory of Renovation Contractors, including for renovation works that need no approval. The owner remains responsible for compliance, so registration does not replace reviewing the proposed work.
Keep the quotation, drawings and approval together. If a contractor later suggests widening a kitchen opening, record the revised dimensions, cost and any approval implications before agreeing. A verbal site discussion should not leave the final scope unclear.
When Can HDB Renovation Work Take Place?
Work hours affect the schedule, especially during demolition.
General renovation
Monday to Saturday, 9am to 6pm
Sundays and public holidays
Noisy renovation, such as wall demolition or removal of finishes
Monday to Friday, 9am to 5pm
Weekends, public holidays and the eve of major public holidays
The same HDB guide gives a completion period after approval of three months for new flats and one month for existing flats. Discuss how your scope fits the applicable period before relying on a move-in date.
HDB’s renovation information also calls for written notice to neighbours within a radius of two units at least five days beforehand, with the renovation notice displayed outside the flat throughout the works. A schedule identifying the expected noisy days gives neighbours more useful information than a broad completion date.
Agree the Scope Before Committing to the Design
Use the floor plan and itemised quotation to settle the changes your household needs, the approval position and who handles each specialist trade. If you’re buying a resale flat, keep an alternative furniture layout that works without the proposed wall alterations. Take that version to the contractor discussion alongside your preferred design.
Disclaimer: The information is provided for general information only. PropertyGuru Pte Ltd makes no representations or warranties in relation to the information, including but not limited to any representation or warranty as to the fitness for any particular purpose of the information to the fullest extent permitted by law. While every effort has been made to ensure that the information provided in this article is accurate, reliable, and complete as of the time of writing, the information provided in this article should not be relied upon to make any financial, investment, real estate or legal decisions. Additionally, the information should not substitute advice from a trained professional who can take into account your personal facts and circumstances, and we accept no liability if you use the information to form decisions.