HDB Renovation Rules 2026: Latest Guidelines and What Changed

Key Takeaways

• All HDB renovation works affecting structure, waterproofing, or fire safety require written HDB approval before work begins. Permits cannot be obtained retrospectively.

•  In 2026, noisy works are restricted to 9:00 am to 5:00 pm on weekdays only. A new quiet hour from 1:00 pm to 2:00 pm applies every working day.

• Structural walls, reinforced concrete beams, floor slabs, and household shelters cannot be modified under any circumstances. No permit covers these works.

• New BTO flats have a restriction covering the first three years: bathroom and toilet tile removal is prohibited to protect the original waterproofing membrane.

• Every contractor working in an HDB flat must be listed on HDB's Directory of Renovation Contractors. This applies to all works, whether they require a permit or not.

You have just received your keys. The flat is bare, the walls are plain, and the version of the home you have been planning is somewhere between a mood board and a builder's quote. Before any of that becomes real, one thing has to come first: Understanding what HDB will and will not allow. Working with an experienced interior designer in Singapore can make this process significantly easier .

The rules are not complicated once they are laid out clearly. But a surprising number of homeowners begin works without fully reading them, and the consequences can be serious. Fines of up to S$5,000, orders to stop work, and the requirement to reinstate the flat to its original condition at your own expense are all real outcomes for failing to comply.

This guide covers everything that matters in 2026. The permit process. The new working hours. What is permanently prohibited. The restriction covering the first three years of a new BTO flat. And the planning considerations that determine how long and how much a fully compliant HDB renovation actually takes.

Not sure what your renovation can and cannot include?  Book a consultation.

The Three Core Principles Governing HDB Renovation

Principle	What it means	How to apply
Structural Safety	HDB flats share structural walls, beams, and floor slabs with surrounding units. Damage to one flat can compromise the entire block.	Never hack into walls shown as structural on your floor plan. All wall demolition or construction requires a permit. Consult a licensed contractor before planning layouts.
Waterproofing Integrity	Bathrooms and toilets have waterproofing membranes that prevent water seeping into the flat below. Once damaged, repairs are expensive, and neighbour disputes follow.	Do not remove bathroom or toilet tiles in a new BTO flat for three years. In all flats, obtain a permit before any tile removal in wet areas.
Neighbourly Consideration	HDB blocks are densely occupied. Noise and disruption from renovation affect dozens of households simultaneously.	Follow the 2026 working hours strictly. Post the notice of renovation before works begin. Keep the new 1:00 pm to 2:00 pm quiet hour free of all loud activity.

Why HDB Renovation Rules Exist

HDB flats are not standalone structures. Every unit in a block shares structural walls that carry load, floor slabs, beams, water and sanitary pipes, and electrical systems with the flats around it. A renovation decision that feels purely personal, such as removing a wall or repositioning a bathroom, can directly affect the structural integrity of your neighbours' homes.

The Housing and Development (Renovation Control) Rules 2006, and the amendments that have followed, exist to prevent three outcomes: structural damage affecting the entire block, waterproofing failures that send water into the flat below, and noise or disruption that makes life unreasonable for the residents around you.

The rules are not bureaucratic obstacles. They are the framework that protects your home and your neighbours' homes simultaneously.

What Changed in HDB Renovation Rules in 2026

The 2026 updates introduced changes that affect both the timing of works and the documentation required to begin them.

The most significant operational change is the quiet hour from 1:00 pm to 2:00 pm on all working days. No loud renovation is permitted during this window. It effectively divides the renovation day into a morning block from 9:00 am to 1:00 pm and an afternoon block from 2:00 pm to 5:00 pm for noisy works. General works can continue until 6:00 pm.

HDB has also increased the documentation required for permit applications. More detailed floor plans, clearer work descriptions, and in some cases additional structural documentation are now expected before approval is granted. Allow more lead time for approvals than in previous years.

The Notice of Renovation requirement remains. Contractors must post this notice before works begin, informing neighbours of the renovation period and the nature of the works being carried out.

Working hours in 2026 at a glance

General works	9:00 am to 6:00 pm on weekdays and Saturdays. Painting, carpentry, plumbing, electrical work, and vinyl laying.
Noisy works	9:00 am to 5:00 pm on weekdays only. Hacking, drilling, tile cutting.
Quiet hour (new in 2026)	1:00 pm to 2:00 pm every working day. No loud work during this window.
Sundays and public holidays	No renovation of any kind permitted.

Works That Require an HDB Renovation Permit

An HDB renovation permit is mandatory written approval from HDB before specific categories of work begin. It cannot be obtained after works have started, and it is not transferable between contractors.

The permit covers works that could affect structural integrity, waterproofing, fire safety, or the shared systems of the building.

Floor works

Removing and replacing floor finishes with any material, including tiles, marble, vinyl, porcelain, and timber laminate, requires a permit.  Raising floor levels in kitchens, balconies, bathrooms, or toilets requires approval. Installing floor finishes exceeding 50mm total thickness also falls within the permit requirement.

Wall works

Demolishing internal walls shown in red on the floor plan requires a permit. Constructing new walls shown in blue requires approval. Creating arches or rounded corners in existing openings, replacing internal wall finishes that may affect the wall structure, and demolishing the partition between kitchen and service balcony all require written approval before work begins.

Door, bathroom and window works

Replacing the main entrance door along a fire escape route requires a permit. The replacement must be rated for fire resistance for thirty minutes and fitted with a door closer. Any removal of bathroom or toilet wall or floor finishes requires a permit. For BTO flats, this is prohibited for the first three years. Window replacement requires a contractor approved by BCA and must follow HDB's design guidelines.

ACE Interior Design, a leading interior designer in Singapore, manages the HDB permit process from application to approval. Get a quote from ACE.

Works That Are Prohibited Without Exception

Some things cannot be permitted. This is the list every homeowner needs to know before planning begins.

• Structural walls and elements. Structural walls that carry loads, reinforced concrete beams, columns, and floor slabs cannot be hacked into, drilled through, or removed. These appear as walls marked with bold lines on the floor plan. Hacking into them risks compromising the entire building block.

• The household shelter. The reinforced room with the steel door designed for civil defence purposes cannot be structurally modified. The walls, floor, and ceiling must remain intact. This is absolute and without exception.

• Floor traps and shared riser pipes. Floor traps cannot be relocated. Sanitary pipes cannot be repositioned in ways that affect the shared riser or the flat directly below.

• External walls and the building facade. This includes unauthorised window enlargements, external fixtures added without approval, and any changes that affect the uniformity of the building's external appearance.

• Excessive floor overlays in bedrooms. Bedroom floor levels cannot be raised beyond the permitted threshold. Excessive floor overlays affect door clearances, fire escape routes, and structural loading on the slab.

The BTO Restriction Covering the First Three Years

If you have just received a new BTO flat, this is the rule that applies before anything else.

For the first three years from the date of BTO completion, removing or hacking wall and floor tiles in bathrooms and toilets is prohibited. The reason is the waterproofing membrane beneath the tiles. HDB installs this membrane in all new flats, and it requires time to cure fully. Remove the tiles too early and the membrane is almost certainly damaged. The result is water seeping through the floor slab into the flat below, disputes with neighbours, and expensive reinstatement.

Within this period you can overlay new tiles over the existing ones within the permitted thickness limit. You can repaint. You can change fittings, accessories, and light fixtures. You can transform the look of the bathroom without touching the tiles underneath.

After three years, the full permit process for bathroom tile removal applies in the same way as for any resale flat.

How to Apply for an HDB Renovation Permit via HDB InfoWEB

Applications are submitted through HDB InfoWEB, the online portal on the HDB website. In most cases, the licensed renovation contractor or interior designer submits the application on behalf of the homeowner. The homeowner remains responsible for ensuring everything complies.

The application requires the flat's floor plan with proposed works clearly marked, a written description of the work scope, and the contractor's details from the Directory of Renovation Contractors. Structural works may require additional documentation.

Approval takes up to three working weeks. Build this into the schedule before confirming a contractor's start date. Once approved, the permit has a validity period: three months for BTO flats and one month for resale flats. Extensions can be requested through HDB InfoWEB if works cannot be completed in time.

The Notice of Renovation must be posted before works begin. The contractor posts this near the flat's main entrance so neighbours are informed of the renovation period in advance.

Works That Do Not Require a Permit

Not everything needs prior approval. These categories of work can generally proceed without a permit, provided they comply with HDB's technical guidelines.

• Painting of internal walls and ceilings, including feature walls, that do not involve structural changes.

• Carpentry installation, including wardrobes, kitchen cabinets, and storage units that do not involve hacking into structural walls.

• Electrical work such as replacing light fittings, switches, and power points, carried out by a licensed electrical worker.

• Air conditioning installation to approved positions on the external wall of the flat.

• Vinyl flooring laid directly over existing floor finishes without removing the original layer and without exceeding the permitted thickness.

• Minor plumbing works such as replacing taps, shower heads, and toilet fittings that do not involve repositioning outlets.

Even for these works, every contractor must be listed on HDB's Directory of Renovation Contractors. That requirement has no exceptions.

Planning Your HDB Renovation Budget for 2026

The financial case for compliance is straightforward. The cost of getting it wrong is almost always higher than the cost of getting it right from the start.

• Permit application: No fee for the online application through HDB InfoWEB. The cost is time. Allow up to three working weeks for approval and build this into the schedule before any contractor begins.

• Reinstatement risk: If prohibited works are discovered, HDB can require the flat to be reinstated to its original condition at the homeowner's expense. Demolition and reconstruction of unauthorised works costs significantly more than the original renovation.

• Renovation costs in context: HDB renovation costs ranged from approximately S$50,000 to S$90,000 for a four-room flat in 2025, depending on scope and finishes. BTO renovations typically sit at the lower end of this range. Resale flats requiring hacking, rewiring and waterproofing renewal sit towards the higher end.

• Phasing works: For homeowners with tighter budgets, phasing the renovation across multiple permit applications is permitted. Structural and wet works in the first phase, and carpentry and finishes in the second. Phasing increases the total timeline but reduces the upfront financial commitment.

ACE Interior Design provides detailed cost breakdowns and phasing plans before any works begin.  Book a consultation.

Using Only Licensed HDB Contractors

Every piece of renovation work in an HDB flat must be carried out by a contractor listed on HDB's Directory of Renovation Contractors. This applies to all works without exception.

Verify registration directly on HDB InfoWEB rather than relying on the contractor's word alone. Licence details, including the specific categories of work a contractor is authorised to carry out, are visible in the directory listing.

Engaging an unlicensed contractor is a violation of the Renovation Control Rules and can result in fines for the homeowner, regardless of the quality of work produced.

Consequences of Failing to Comply

Fines of up to S$5,000 apply for commencing works without a permit, engaging an unlicensed contractor, deviating from the approved permit scope, or carrying out prohibited works.

An order to stop work can be issued immediately when a violation is discovered. No further renovation can proceed until the matter is resolved with HDB.

Reinstatement at the homeowner's expense is required if prohibited works are already complete. This is consistently the most costly outcome of failing to comply.

Neighbours can report violations through the OneService app or directly to HDB. Inspectors visit sites to verify compliance with approved permits and renovation guidelines.

A Renovation Done Properly: Understanding HDB Renovation Rules 2026

A well-executed HDB renovation feels effortless from the outside. Walls where you wanted them. Light where there was none. A bathroom that finally reflects how you live. What is invisible is the layer of compliance beneath all of it: permits obtained before the first contractor arrived, licensed tradespeople who knew exactly where to stop, and a timeline that accounted for approval periods without a single day lost to an order to stop work.

That is what a renovation done properly looks like. Not just beautiful. Structurally sound and legally clean in ways that protect your home and your investment for the years ahead.

At ACE Interior Design, a trusted interior designer in Singapore, we manage the full permit process for every HDB and condo project we take on. We work only with contractors from HDB's Directory of Renovation Contractors, submit every application through HDB InfoWEB, and do not start work until approval is confirmed. Explore our portfolio or book a consultation to discuss your renovation.

Ready to start your HDB renovation the right way?  Book a consultation with ACE Interior Design.

Frequently Asked Questions

What HDB renovation works require a permit in 2026?

Works requiring a permit include floor finish replacement, raising floor levels, hacking or building internal walls, creating arches, replacing entrance doors along fire escape routes, and all bathroom tile removal.

What are the HDB renovation working hours in 2026?

General works run from 9:00 am to 6:00 pm on weekdays and Saturdays. Noisy works are restricted to 9:00 am to 5:00 pm on weekdays only. A new quiet hour from 1:00 pm to 2:00 pm applies every working day. No renovation is permitted on Sundays or public holidays.

Can I renovate my BTO bathroom in the first three years?

No. Tile removal in bathrooms and toilets is prohibited for the first three years from your BTO completion date. This protects the original waterproofing membrane. You can overlay new tiles, repaint, change fittings, and replace accessories during this period. Full bathroom renovation is available after the restriction lifts.

What happens if I renovate my HDB flat without a permit?

Fines of up to S$5,000, an order to stop work, and a requirement to reinstate the flat to its original condition at your expense. If structural works are involved, HDB may require a professional engineer's assessment. The cost of failing to comply almost always exceeds the cost of proper compliance from the start.