After buying a Punggol HDB resale flat, make an item-by-item renovation list before choosing a start date. HDB requires a contractor from its Directory of Renovation Contractors for flat renovations. Some work, including specified building and sanitary work, needs prior approval. Work that is exempt from a permit still has to meet the applicable guidelines.
Ask the contractor to identify which items need a permit, whether a licensed specialist is required and which restrictions apply to the actual flat. Wait for the required approval before work begins. Tie the schedule to vacant possession, the permit dates and the time you need for the home to become usable.
Quick Read
- Check the real unit and the current HDB guide for each renovation item.
- Verify the firm in HDB’s directory and check the relevant specialist licences.
- Compare the approved plan with the quotation before work begins.
- Put noisy work, completion of approved work and move-in on separate dates.
CHAPTER 1 OF 10
Build a renovation list from the actual flat
Start with what the home needs for your household. A Punggol resale flat may require new finishes, repairs to an existing fitting, a bathroom change or a different room arrangement. Write each item separately. “Renovate the kitchen” could cover replacement cabinets, moving a water point, electrical work, changes to a wall and floor finishes. Each part can have different requirements.
Bring the floor plan and photographs from your viewing or handover. Ask the contractor to mark the location, proposed method and dimensions of each item on the plan. Where a previous owner altered the layout, identify what is already present and what you intend to change. Obtain any available records and ask about uncertain work before treating the existing condition as approved.
A worksheet for one room For the kitchen, list cabinets, floor, lighting, power points, water and any change to the opening. Next to each item put the person doing the work, whether a permit is required, and which drawing or instructions describe it. Separate repairs that affect immediate use from changes you can defer. This makes it easier to decide what should happen first if approval takes longer or the household has a narrow budget.
Run the same exercise for bathrooms and bedrooms. If a parent needs a safe bathroom at move-in, prioritise the work that makes it usable. If someone needs a desk for school or work, check the light, outlet locations and delivery time for furniture. A floor plan changes very little if the new wiring or furniture will arrive after the first night.
Record the unit and exact locations on the same version of the plan. A quote that says “remove wall” without identifying which wall creates problems for both pricing and approval. Ask for a clear description before signing and compare it with the contractor’s application later.
CHAPTER 2 OF 10
Choose the contractor and specialist trades
HDB says to engage a contractor listed in its Directory of Renovation Contractors for renovations in your flat. Check the firm actually engaged for the work and make sure the name matches the quotation and permit application. If an interior designer coordinates the project, ask which registered contractor executes the works and who applies. Keep the contact details for the person responsible on site.
Some jobs need a separately qualified specialist. HDB’s guidance lists a PUB Licensed Plumber for applicable water service and sanitary work, an EMA licensed worker for gas or electrical work as applicable, and an approved window contractor listed with HDB for window work. It also discusses trained air-conditioner installers and the separate requirements for certain electrical or air-conditioning work. Confirm which person will do each job rather than assuming the main contractor covers every authorisation.
Compare two quotations on the same scope One quote includes the contractor, specialist work, protection and disposal. Another gives a lower lump sum but leaves electrical changes and debris removal to be quoted later. Ask both firms to list inclusions and exclusions by work item, to name the relevant trades and to explain how they deal with changes. Compare the total for the same scope and timetable.
The lowest estimate may be missing a job you need for move-in. For example, cabinetry could be included while reconnection of a water point is priced separately. Ask which part needs approval and which professional is responsible for checking the final connection. Put that person and expected date in the project file.
Before any payment, confirm the quoted entity and contact, payment milestones and what happens if a proposed item cannot be approved. If the project uses a different contractor later, ask how the permit and existing work will be handled before the substitute starts.
Separate the lead contractor’s role from the specialist’s role
Ask the lead contractor to name the licensed specialists, describe what they will do and say who will arrange any separate submission. Check the relevant official registers rather than relying on a trading name on a brochure. When a quotation covers supply and installation together, ask which legal entity installs the item and who handles a defect. The receipt for a product and the installation record can come from different companies.
If a replacement specialist joins the project, confirm the change with the lead contractor and check any applicable licence or permit again. Give the new person the current drawing and the conditions they need. Save the change in the project record before they begin. This is particularly helpful where one trade must prepare work that a second trade will inspect or connect.
CHAPTER 3 OF 10
Work out which items need approval
Use HDB’s current building, sanitary, electrical or other relevant guides for the precise work. A permit may depend on what is removed, where something is installed and what method is used. Check the actual flat and any extra precinct conditions. HDB says work not described in its guidance, or work proposed with different measurements or technical details, can require approval before it starts.
Do not assume a cosmetic label settles the question. Replacing a finish and removing a wall are different tasks. Window work and changes affecting sanitary connections have their own requirements. Ask the contractor to show the applicable guidance and identify which items will appear in the permit application. If the answer is uncertain, refer the description and plan to HDB before scheduling that part of the work.
A scope that changes after the first visit A family initially plans to replace cabinets. After measuring, it wants a wider opening and to relocate a fitting. The first quotation no longer describes the job. The contractor should check the building and plumbing rules for the new scope. The family then gets the required drawings, an updated price and an answer on approvals. The original cabinet schedule is no longer enough to start the other work.
For work that can proceed without a permit under the published rules, keep a record of the basis and conditions. Ask how the contractor will meet those conditions. A buyer can also use the record later if it needs to explain which parts of the flat were altered and who performed the work.
An existing block may have project-specific features. Use the unit’s guidance and ask HDB if the generic illustration and your layout differ. A photograph from another Punggol block can help you describe your idea, but the requirements apply to your unit.
CHAPTER 4 OF 10
Walls, floors and bathrooms need precise descriptions
Ask the contractor to show the location and nature of every proposed opening or removal. A flat’s visible plan can help you understand dimensions, but the contractor and HDB need to assess whether work is permitted. Wait for the necessary approval before demolition or alteration. Keep the approved drawings on site and check that the workers are using the correct version.
For floor and bathroom work, distinguish overlaying a finish, removing existing tiles and changing the underlying arrangement. Ask the contractor to identify the specific HDB provision and any waterproofing or wet-area requirements. For a recently completed project, verify any applicable restrictions on removing original bathroom finishes. Check the official conditions for the block rather than assuming a resale completion starts or ends a restriction.
A bathroom planned around day-to-day use A household needs one bathroom ready before it moves in. It asks the contractor which work requires approval, what must be checked after installation and when the room can be used. It schedules essential plumbing and fixture checks before delivery of furniture. If another bathroom can wait, it obtains a separate price and considers staging the work.
When pricing bathroom work, ask whether removal, waterproofing, making good, fixtures and final testing are all included. Check who deals with an issue if a leak is observed and who coordinates any inspection. Do not start another trade in the room before the required checks are complete. Put the sequence in writing so the plumber, tiler and main contractor use the same dates.
The contractor should explain how it will deal with an unexpected existing condition. For example, if removing a cabinet exposes a service that the drawing did not show, pause the affected change and confirm what can be done. Agree that new work will be quoted and checked before proceeding.
CHAPTER 5 OF 10
How the permit application is handled
HDB’s guidance says the owner authorises the renovation contractor to submit the electronic application, with an acknowledgement signed by the owner. Ask for the scope and drawings that will be submitted. Check the address, unit, proposed works and attachments. HDB sends notification when it receives the submission, and the owner can check the permit after it is granted. Keep the receipt and approved permit as different records.
Read the approval and any conditions before telling the contractor to start. Confirm the approved works, dates, hours and requirements for notice or evidence. If some work is pending or is excluded, mark that clearly for the contractor and any specialist. A schedule in the quotation is provisional until the necessary permission and possession are in place.
What to check when the permit comes back An owner receives an approval and compares it with the quote. The drawings show a particular opening, but the quote also refers to an extra change. Ask the contractor to clarify which work HDB approved and whether a revised application is needed for the extra item. Continue only with work that can lawfully proceed under the applicable conditions. Save the final approved documents together.
If HDB asks for more details, agree who will provide the information and when. Do not pay for custom materials that depend on the pending item unless you are comfortable with the contract terms and the possibility that the design changes. Keep approvals in the same shared project schedule as trades and deliveries.
For some electrical or air-conditioning work, the relevant licensed person may apply under a separate procedure. Ask whether this applies and request the evidence before the work starts. Put it on the same list as the main renovation permit so a later trade does not assume it has already been covered.
CHAPTER 6 OF 10
Fit the start date to possession and the approved period
For a resale purchase, use the actual vacant-possession date before planning access for the works. If a seller has a Temporary Extension of Stay, legal completion may precede physical handover. Confirm when you can take possession, do a walkthrough and arrange utilities. Set the permit and contractor schedule with enough room for these events. Check the earliest date the contractor can safely commit to.
HDB’s general guidance says approved renovations for existing blocks must be completed within one month from the permit date. It lists different general periods for newly completed blocks and window-only work. Follow the exact permit and any applicable project-specific conditions. Ask the contractor how much of the timeline depends on work still awaiting approval, deliveries or another trade.
A renovation that depends on a delayed handover A buyer expects keys after completion and books a contractor for the following week. The seller requests an approved later stay. The buyer updates the expected possession date and checks the permit schedule with HDB or the contractor. It also checks whether deposits or material deliveries can be moved. The earlier legal completion date still matters for ownership, while the later handover determines physical access.
Draw the timeline in order. Start with possession and the first unit check, then approved work, drying or installation time where relevant, specialist tests, final inspection and move-in. Add a short buffer before the first night. For example, a delayed fixture can make a bathroom unusable even if the rest of the renovation is ready. Plan around the rooms you need first.
Ask how the contractor handles an expected delay past the permit period. Get the official answer before allowing work to continue outside the approved dates. If a design can be simplified or a nonessential part can wait, confirm the correct approval route for that plan.
CHAPTER 7 OF 10
Plan permitted hours and tell the neighbours
HDB’s published general hours are 9 am to 6 pm on weekdays and Saturdays, with no renovations on Sundays or public holidays. Restricted works such as wall demolition, removal of finishes and heavy drilling have shorter hours on permitted weekdays. HDB excludes Saturdays, Sundays, public holidays and the eves of specified holidays from those restricted works. Check the actual dates and work type against the official guidance and permit.
Ask the contractor to show how it will meet HDB’s limits on noisy activities and comply with the notice requirements. Confirm who will notify immediate neighbours and when, and who will display any required notice. Provide a practical contact for queries during the work. For a block with many people working at home or children taking exams, clear advance notice can make a noisy week easier to manage.
A week with a public holiday A contractor proposes to do heavy drilling on Saturday and finish on the following public holiday. The owner checks the permitted days and asks for a revised schedule that puts the restricted work on an allowed weekday. A furniture delivery or other task may have different requirements. Discuss the actual activity rather than using one calendar entry for everything.
Put expected noisy days on the project calendar and check which lifts and common areas the crew will use. Ask how the contractor will protect common property, clear debris and avoid obstructing passages. The parties should agree who checks the area at the end of each workday. Keep the relevant contact available if there is a practical problem.
The displayed notice and approved permit should match the actual work dates. If a phase moves, check what needs to be updated or communicated before the contractor starts. Keep an accurate plan for the people carrying out the work as well as the neighbours affected by it.
Put restricted work on its own schedule
HDB’s general timings allow restricted renovation work from 9 am to 5 pm on permitted weekdays. The guidance also limits the demolition of walls or removal of finishes to no more than three consecutive days. Ask the contractor to identify the work that falls in those categories and confirm how its schedule meets the rules. Keep the dates for noisier work separate from cabinet installation, cleaning and deliveries. If a public holiday cuts the week short, plan the sequence with the contractor before anyone begins.
Give immediate neighbours a clear description of the expected noisy days and a contact who can answer questions. Ask the contractor about notice and display requirements for your works and precinct. If a delay changes the sequence, update the people affected and confirm whether the permit or any notice needs attention. A calendar that says “renovation this week” is less useful than one that shows the actual days and times of restricted activity.
| Work or milestone | General timing | What to verify |
|---|---|---|
| General renovation | 9 am to 6 pm on weekdays and Saturdays | No work on Sundays and public holidays |
| Restricted work | 9 am to 5 pm on permitted weekdays | Check excluded holiday eves and the permit |
| Approved works in existing blocks | Generally within one month from permit date | Check the approved end date |
| Window-only approved works | Generally within two weeks from permit date | Check specialist and permit terms |
CHAPTER 8 OF 10
Control changes once work begins
Keep a single current scope and drawing set. If a contractor or designer proposes moving a fitting, adding a partition or changing a method, write down the change, reason and new price. Ask if it is covered by the current approval and whether a revised permit or other clearance is needed. Pause the affected part until the answer is clear. Keep the authorisation alongside the updated plan.
A legitimate variation can come from an unexpected site condition. Ask what the team found, whether it affects safety or use of the home, and how the change will alter cost, timing and approvals. A short written quote should identify the responsible trade, what it will do and when it expects to finish. Make sure the household agrees before the work enters the schedule.
A revision discovered during work A contractor finds a service route behind a cabinet and proposes shifting an opening. The owner asks the contractor to stop that item and provide a revised plan for assessment. Other authorised work can be planned separately if it can proceed safely. The owner updates the timeline only after the contractor confirms the approval and cost implications.
Check invoices against the scope you approved. If a line says “extra works,” ask for the item, date and agreed cost. Store photographs of the progress where useful. If a variation makes a room unavailable at move-in, decide whether to adjust deliveries or keep temporary accommodation longer.
Keep a question log for the final inspection. Record items the contractor says are complete and items waiting on tests, documentation or a replacement part. A payment milestone should follow what your contract says about completion and handover. Review that language before the first variation arises.
CHAPTER 9 OF 10
Prepare for the contractor handover
Walk through the flat with the contractor after the work. Compare the completed items with the quote and approved plans. Check the everyday operation of doors, windows, fittings and services with the relevant trades. Ask for confirmation of checks and certificates where applicable. If you see a problem that requires specialist assessment, record it and have the appropriate person investigate.
Keep a room-by-room list of incomplete or defective items, the person responsible and the proposed fix date. Photograph specific items if helpful. Review the final balance, any agreed retention terms and the response procedure for issues after handover. Save the permits, approved drawings, relevant certificates and warranties so the household can find them later.
A flat that is finished enough to view A family visits its Punggol flat a week before the planned move. The contractor has finished most work, but the bathroom needs a fitting replaced and an electrical check is outstanding. The family asks for confirmed completion dates and keeps the moving plan flexible until the home is ready. It verifies how to get to the unit with deliveries and who will be there to receive them.
If you are unsure about a change made during works, compare it with the approved plan and ask the contractor what was authorised. Get the supporting record before you consider that item closed. If something affects the project’s compliance, follow the official instructions instead of assuming it can be sorted after moving in.
Record which keys or access devices have been held by the contractor and confirm their return. If the plan includes a smart lock or other shared access system, arrange the appropriate reset after the final contractor access.
CHAPTER 10 OF 10
Use one final checklist before committing to the move
Start with the actual possession date and permitted start date. Confirm each approved item, the registered contractor, specialist trades, expected end date and how changes are handled. Add the dates you plan to check essential services, receive furniture and sleep in the flat. Keep one version that the household and contractor can both review.
A two-stage move can help if one bedroom and bathroom are ready while other nonessential work is pending. Check whether living in the unit during that work is practical and consistent with the actual scope. A child’s study routine, a parent’s mobility or a work-from-home schedule may make temporary accommodation preferable. Estimate the cost of extending it before making a firm booking.
Four answers to confirm before the first day Ask who will carry out each job, which approvals cover it, when the work can happen and how you will verify completion. Check the same answers again before accepting a revised scope. A good answer names the person, document and date rather than relying on “the contractor will handle it.”
Keep the receipt for each payment and the final documents with the property records. A future owner, adviser or contractor may ask what changed in the flat. The approved drawings and specialist records will help you explain it. Review any warranty dates and write down the contact for problems after handover.
If the proposed work still has an unresolved approval, keep it out of the start instruction. If the flat is ready, book delivery using the confirmed possession and access. Allow time to check services and any essential safety items before the household brings everything in. This gives you a move date that reflects the actual flat, the approved work and the people who need to use it.
Common questions
Can I start work as soon as the seller hands me the keys?
Check that you have legal possession and the required approvals. Work needing a permit can begin only after the applicable permit is granted.
Does every renovation require a permit?
No. HDB’s item-specific guidelines identify which work needs approval and which may proceed under stated conditions without a permit. The rules still apply to both.
Can a contractor remove a wall if it looks thin on the floor plan?
A drawing alone cannot establish that work is allowed. Have the registered contractor identify the wall and follow HDB’s building-work requirements. Wait for any required approval.
Can heavy hacking take place on Saturday?
HDB’s general rules restrict work such as wall demolition and heavy drilling to permitted weekdays. Check the official hours, excluded dates and terms of your permit.
What if I change the plan after the permit is granted?
Pause the affected work and ask the contractor or HDB whether revised approval is required. Keep the updated drawing and written decision before the changed work starts.
Do the same rules apply to every precinct?
Some flats and projects have additional requirements. Check the applicable precinct and unit guidance in MyHDB or with the managing branch.
What to do next
Before scheduling the first day, confirm possession, each item in the scope, the contractor and relevant licences, the permit status, permitted hours and the approved end date. Leave space between final checks and the first night in the flat.
