HDB Hacking Permit Singapore: Complete 2026 Approval Guide
Planning to hack walls, floors, or tiles in your HDB flat? You almost certainly need an HDB renovation permit before a single jackhammer is lifted. Unauthorised hacking carries fines up to S$5,000 and mandatory reinstatement costs of S$10,000 to S$30,000 — far more than the permit itself. This 2026 guide walks through exactly which hacking works need HDB approval, what you can and cannot hack, the step-by-step application process, approval timeline, working-hour rules, and how much an HDB Licensed Renovation Contractor should cost.
If you already know the rules and just need a licensed contractor to handle the permit and execute the hacking safely, jump straight to our Hacking Services Singapore page for a site-specific quote.
Do You Need an HDB Permit for Hacking Works?
Not every renovation change triggers an HDB permit, but the vast majority of hacking works do. HDB requires written approval for:
- Demolishing internal walls (even non-load-bearing partition walls)
- Hacking floor tiles or existing floor finishes in any room
- Raising floor levels or installing finishes thicker than 50mm
- Building new walls after hacking the old ones
- Creating arches or openings in existing walls
- Hacking bathroom/toilet tiles (with added restrictions in BTO flats)
- Replacing main entrance doors on fire escape routes
If any of your works fall under these categories, your HDB hacking contractor must submit a renovation permit application on your behalf before starting. Skipping this step is the single most common cause of HDB fines in residential renovation projects.
What Can and Cannot Be Hacked in an HDB Flat
This is where most HDB homeowners get caught out. The rules differ by wall type, flat type, and age of the flat.
Walls you CAN hack (with HDB approval)
- Non-load-bearing internal partition walls between rooms
- Non-structural feature walls and TV consoles
- Walls within bedrooms or between bedrooms (subject to flat-type rules)
Walls you CANNOT hack (under any circumstance)
- Load-bearing walls, columns, and beams — structural; removal compromises the whole block
- Bomb shelter / household shelter walls — mandated by Civil Defence regulations
- AC ledge walls and external walls
- Walls concealing essential services (plumbing risers, electrical conduits)
- Staircases in Executive Maisonettes — structural
BTO flats: the 3-year tile hacking rule
If you live in a BTO flat, you cannot hack bathroom or toilet tiles within the first 3 years from the date of completion. This rule protects HDB’s waterproofing warranty. Break it and you void the warranty — any future water seepage becomes your problem, not HDB’s.
HDB Hacking Permit Application Process — Step by Step
Your Licensed HDB Renovation Contractor (RC) handles the permit submission. You do not apply directly. Here is the flow:
- Engage an HDB-licensed contractor — only a contractor with a valid RC licence can submit renovation permits. Check their licence number on the HDB website before signing.
- Prepare the scope of works — detailed drawings of walls to hack, floors to strip, tiles to remove, and any new walls going up. The contractor marks load-bearing walls in red so they are flagged as non-hackable.
- Submit the permit application — the contractor files through the HDB e-Services portal with the layout plan, scope list, and fee.
- Wait for HDB approval — HDB takes up to 3 weeks to process, depending on complexity and completeness of the submission.
- Receive the permit & display it on-site — once approved, the permit must be displayed at the unit entrance throughout the renovation.
Tip: resubmissions happen when drawings are unclear or the scope touches a forbidden wall. A good contractor spots issues before submission, not after.
HDB Renovation Permit Timeline & Hacking Working Hours
Approval window
HDB typically processes renovation permit applications in up to 3 weeks. Straightforward scopes (single wall hack, simple tile replacement) often clear in under 10 working days. Complex submissions that touch structural boundaries take longer.
Allowed hacking hours
- General renovation works: 9am to 6pm, Monday to Saturday
- Noisy works (hacking, drilling, demolition): 9am to 5pm, weekdays only
- No renovation or hacking on Sundays and public holidays
Breaching the noisy-hours rule is a frequent source of neighbour complaints. Schedule hacking days on weekday mornings to finish before 5pm.
Completion deadlines
- BTO flats: approved renovation works must complete within 3 months of permit issuance
- Resale flats: approved renovation works must complete within 1 month of permit issuance
If your contractor cannot finish within the window, an extension must be requested before expiry — not after.
HDB Hacking Cost & Permit Fees Breakdown (2026)
Total HDB hacking cost combines three line items: the contractor’s hacking labour, HDB permit fees, and NEA-compliant debris disposal. Indicative 2026 figures:
| Cost Item | Typical Range (SGD) |
|---|---|
| HDB renovation permit fee (paid by contractor) | $10 to $50 per application |
| Single wall hacking (non-load-bearing) | $400 to $1,200 |
| Bathroom / kitchen tile hacking | $800 to $1,800 per unit |
| Full-unit floor hacking | $1,500 to $3,500 |
| Whole-home HDB hacking works | $3,000 to $8,000+ |
| Debris disposal (NEA-compliant) | $150 to $400 per truck |
Prices vary with access, floor level, and whether the flat is occupied during works. See our detailed hacking services Singapore page for a site-specific quote.
Penalties for Unauthorised HDB Hacking
HDB takes unauthorised hacking seriously. The penalty structure in 2026:
- Fines up to S$5,000 for first offences (hacking without permit, hacking forbidden walls, working outside approved hours)
- Mandatory reinstatement costs of S$10,000 to S$30,000 — if you removed a wall you should not have, you must rebuild it at your cost, to HDB specifications
- Stop-work orders — halts all renovation activity until the issue is rectified, delaying your move-in by weeks
- Fines up to S$10,000 plus prosecution for repeat offences or structural damage
The fine is only the visible cost. Reinstatement, delayed occupation, and disputes with your contractor usually add up to several multiples of the original hacking budget.
Common HDB Hacking Mistakes to Avoid
Based on Fortified’s HDB hacking projects across Singapore, these are the mistakes that trigger fines, reinstatement orders, or neighbour disputes:
- Starting hacking works before the permit is approved and displayed on-site
- Hiring a non-licensed contractor who cannot submit permits
- Hacking a wall that looked non-load-bearing but is structurally load-bearing
- Starting noisy works before 9am or continuing after 5pm on weekdays
- Hacking BTO bathroom tiles within the 3-year warranty window
- Skipping dust protection and damaging neighbours’ common corridor floors
- Disposing debris at unauthorised sites instead of NEA-approved dump yards
- Missing the 1-month (resale) or 3-month (BTO) completion deadline without requesting extension
Checklist: Before Hiring an HDB Hacking Contractor
Before signing any HDB hacking contract, run through this checklist:
- Valid HDB Licensed Renovation Contractor number (verify on HDB website)
- Written quotation breaking down hacking, permit fee, and debris disposal separately
- Scope drawings marking load-bearing walls in red (non-hackable)
- Dust containment plan (barriers, floor covering, shared corridor protection)
- NEA debris disposal receipt commitment (you ask for the receipt on completion)
- Public liability insurance covering damage to neighbouring units
- Clear completion timeline fitting within your flat’s permit window
- Post-hack inspection commitment before handover
If a contractor hesitates on any of these, walk away. A licensed hacking contractor Singapore will have every item ready before you ask.
Frequently Asked Questions: HDB Hacking Permit Singapore
Do I need an HDB permit to hack my kitchen tiles?
Yes. Any tile hacking in HDB bathrooms, toilets, or kitchens requires a renovation permit submitted by your licensed HDB Renovation Contractor. BTO flats have the added restriction that bathroom and toilet tiles cannot be hacked within the first 3 years of completion due to the waterproofing warranty.
How long does HDB take to approve a hacking permit?
HDB processes most renovation permit applications within 3 weeks. Simple single-wall hacking scopes often clear in 7 to 10 working days. Complex scopes that touch structural boundaries or require architect certification take longer.
Can I hack a load-bearing wall in my HDB flat with special approval?
No. Load-bearing walls, columns, beams, bomb shelter walls, AC ledge walls, and exterior walls cannot be hacked under any circumstance — HDB does not issue permits for structural wall removal in flats. Attempting it voids the block’s structural integrity.
What are the HDB hacking working hours in Singapore?
Noisy works including hacking are allowed 9am to 5pm on weekdays only. No hacking is permitted on Saturdays after 5pm, Sundays, or public holidays. General non-noisy renovation works can run 9am to 6pm Monday to Saturday.
How much does HDB hacking cost in Singapore in 2026?
Single non-load-bearing wall hacking typically costs S$400 to S$1,200. Bathroom or kitchen tile hacking runs S$800 to S$1,800 per unit. Whole-home HDB hacking works range from S$3,000 to S$8,000+. Add S$150 to S$400 per truck for NEA-compliant debris disposal and S$10 to S$50 for the permit fee itself.
What happens if I hack walls without an HDB permit?
First-offence fines reach S$5,000. If the wall was forbidden, HDB issues a mandatory reinstatement order costing S$10,000 to S$30,000 to rebuild. Stop-work orders can delay your move-in by weeks. Repeat offences attract fines up to S$10,000 plus prosecution.
Can my contractor apply for the HDB renovation permit for me?
Yes — only a licensed HDB Renovation Contractor (RC) with a valid licence number can submit a renovation permit on your behalf. Homeowners do not apply directly. Always verify the contractor’s RC licence on the HDB website before signing.
How long do I have to complete approved HDB hacking works?
BTO flats have 3 months from permit approval to complete all renovation works. Resale flats have a shorter 1-month window. If your contractor needs more time, they must request an extension before the permit expires — not after.
Do I need to inform my neighbours before HDB hacking starts?
HDB requires contractors to distribute a renovation notice to adjacent units before noisy works begin. The notice states the dates, expected noise levels, and contact details. Good contractors handle this automatically; confirm it is done before the first day of hacking.
Is there a difference between HDB hacking and condo hacking permits?
Yes. HDB flats go through HDB’s renovation permit system. Condos go through the Management Corporation Strata Title (MCST) of the development, not HDB. Rules differ per condo but usually require MCST approval plus a licensed contractor. Do not assume HDB rules apply to condo units.
Need HDB-compliant hacking in Singapore? Fortified is a licensed hacking contractor handling permit submission, dust control, and NEA-compliant debris disposal on every HDB project.
APEX: The Online Portal Your Contractor Uses
Since mid-2024, all HDB renovation permits are submitted through the APEX portal (Application for Renovation Permit via Electronic Transaction). This is the only official submission channel — no more paper forms at HDB branch offices. Your licensed contractor logs in with their RC credentials, uploads the floor plans, and files the application entirely online.
What APEX requires:
- Colour-coded floor plans: RED for demolition, BLUE for new construction, YELLOW for replacement walls. Each colour tells the HDB reviewer exactly what changes where.
- Directory of Renovation Contractors (DRC) reference number in format
HB-XXXX-XXXX-XXXX. Your contractor must hold a valid DRC number; check it on the HDB website before signing any contract. - Certified Worker credentials for specialised trades and Trained Window Installer for any window replacement.
- Fire-rated door specification for main entrance doors on fire escape routes — half-hour fire-rated solid timber with door closer.
- Notice of Renovation posting outside the unit throughout the works, stating start and end dates.
APEX processing itself is free — HDB does not charge a fixed permit fee. Your contractor may include a small admin fee (typically S$10 to S$50) in the quote to cover their submission time.
When You Need a Professional Engineer (PE) Endorsement
A Professional Engineer (PE) endorsement becomes mandatory when the hacking scope touches any structural element. Even if HDB would not normally approve structural wall removal, any scope borderline close to load-bearing zones can trigger a PE review request from HDB.
When PE endorsement is typically required:
- Opening new doorways close to load-bearing walls or columns
- Any work involving beams, columns, or slab penetrations
- Adding heavy fixtures that exceed floor load capacity (stone tops, bath tubs)
- Enclosed balcony works affecting external envelope
PE endorsement fees are not regulated — market rates run from S$500 to S$2,500 depending on scope complexity. This is over and above the hacking contractor’s quote. Ask the contractor upfront whether your scope needs PE sign-off, so the cost does not come as a surprise mid-project.
Renovation Works That Do NOT Need an HDB Permit
Not every renovation item needs a permit. You can safely proceed without HDB approval on:
- Painting and wallpapering — interior paint jobs, wallpaper installation, feature wall treatments
- Re-plastering on existing walls (without hacking them first)
- Air-conditioner installation at designated AC ledges only — any non-designated location needs a permit
- Removing internal fittings and fixtures that are not fixed to the structure (wardrobes, free-standing cabinets)
- Replacing built-in fittings like minor vanity cabinets if no wall hacking is involved
- Installing curtain rails, blinds, ceiling fans (non-hacking installation)
The line between permit-required and permit-free gets blurry once any hacking is involved. When in doubt, ask your licensed contractor — a S$10 to S$50 APEX submission is far cheaper than a S$5,000 fine.
Impact on property resale
Unauthorised hacking has one more hidden cost: it complicates your future resale. HDB checks permit records when a flat is sold. Unapproved structural modifications must be reinstated to the original layout before the sale can proceed — a cost and delay buyers do not want to inherit. Resale listings for flats with unresolved permit issues typically see lower offers and longer time on market.