HDB renovation permit: when you need one and how to check its status

Which HDB renovation works need a permit

HDB requires prior written approval, issued as a renovation permit, for work in an HDB flat that could affect the building's structure, its waterproofing or its fire escape routes. On HDB's building works guidelines, the items marked "Permit Required: Yes" include demolition of non-load-bearing reinforced concrete elements such as partition walls, party walls, stiffeners, lintols or hangers; demolition or alteration of internal non-structural lightweight partition walls such as hollow block and brick walls, Drywalls or Ferrolite walls; creating an opening in a non-structural wall between two flats; replacing floor finishes in ceramic, homogeneous, terrazzo, marble, parquet or timber; replacing internal wall finishes up to ceiling level; topping up the flooring at a balcony, kitchen, bathroom or toilet with lightweight screed or block; enlarging a bathroom or toilet after the first three years from block completion; replacing a bathroom or toilet vent; repositioning internal door entrances; and replacing a main entrance door or frame along a fire escape route, which HDB defines as a door opening into passageways such as staircases and lift lobbies (HDB, Renovation Guidelines for Building Works).

Windows are the least ambiguous case in the whole guideline set. HDB states that "a renovation permit from HDB is required for all windows replacement work", and that "a BCA Approved Window Contractor (AWC) who is listed in HDB's Directory of Renovation Contractors needs to apply a renovation permit from HDB before carrying out the window replacement works" (HDB, Renovation Guidelines for Window Works). A general renovation contractor, however competent, cannot apply for or carry out that particular job.

Some permits concern the space at the edge of the flat rather than the rooms inside it. HDB requires a permit for renovation within a sold recess area, for an awning at an open-to-sky balcony, and for replacing staircase balustrades or erecting a safety barrier in an executive maisonette where there is a vertical drop in level of 1m or more — and for that last category HDB requires a Professional Engineer for Civil or Structural works to submit plans to BCA first, after which the BCA Approved Drawing and Permit to Carry Out Structural Works are submitted to HDB for the renovation permit to be issued (HDB, Renovation Guidelines for Building Works).

Works that need no permit still carry binding conditions

A large part of a typical HDB renovation needs no permit at all: laying vinyl, carpet or linoleum, laying laminate or timber flooring over existing finishes, false ceilings and cornices, erecting a 63mm hollow block or gypsum partition wall, building a kitchen counter top, and replacing a main entrance door that is not fire-rated (HDB, Renovation Guidelines for Building Works). HDB's own wording is the part homeowners miss: "If the renovations do not require a permit, you would still need to comply with set guidelines for the work. Otherwise, they will be considered as unauthorised works" (HDB, Application for a Renovation Permit).

Water, sanitary plumbing and gas works sit in their own category. HDB states that "all of the water and sanitary plumbing works/ gas works listed here do not require a permit from HDB", but that water service and sanitary works must be carried out by a PUB Licensed Plumber and gas service works by an EMA licensed gas service worker (HDB, Water and Sanitary Plumbing Works and Gas Works). Electrical work depends on your block: a new 15amp power point or 20amp isolator requires a permit in a flat provided with a 30amp main switch, but not in a flat provided with a 40amp main switch, which HDB says covers blocks completed on or after 1 January 1994 or upgraded under the Main Upgrading Programme or Home Improvement Programme (HDB, Renovation Guidelines for Electrical Works).

Who applies for the permit, and what has to be in place first

The flat owner is responsible for the permit; the contractor is the one who files it. HDB's process requires you to authorise your renovation contractor to submit an electronic renovation application on your behalf, with a copy of an acknowledgement form duly signed by you attached to the submission, after which an SMS notification is sent to you once HDB receives it (HDB, Application for a Renovation Permit).

HDB evaluates certain applications, demolition of walls in particular, against a floor plan showing the proposed work, which the renovation contractor submits together with the electronic application. HDB says the floor plan given to you in the sales brochure at flat selection can be used, and otherwise a copy can be purchased through the Purchase of Residential Floor Plan e-Service or at a self-service kiosk at any HDB Branch (HDB, Application for a Renovation Permit).

One condition sits above all of this. Under the Housing and Development (Renovation Control) Rules, an HDB flat owner must engage a contractor listed in the Directory of Renovation Contractors, and contravention is an offence carrying a fine not exceeding S$5,000 (Housing and Development (Renovation Control) Rules, Singapore Statutes Online). Noble Interior Design Pte. Ltd. is listed in HDB's Directory of Renovation Contractors (DRC Ref: HB-12-5230A, UEN 201722629H) and is CaseTrust-accredited.

How to do an HDB renovation permit check

Once HDB grants the permit, the flat owner can view it directly rather than relying on a contractor's word. HDB's Check Renovation Permit e-Service sits under My Flat Details and is reached at services2.hdb.gov.sg/webapp/BN32AWMyFlat/BN32SFlatRenovation; the address redirects to HDB's login before it will show anything, so the check is done by the flat owner from a logged-in HDB account, and MyNiceHome confirms that after the permit has been granted the owner can view the details using that e-Service (MyNiceHome, How to Renovate Your HDB Flat).

What you are checking for is narrower than "is there a permit". Read the list of approved works line by line against the quotation you signed, because a permit covering the removal of one bedroom wall does not cover a second wall someone decided to open up on site, and read the conditions attached — for demolition of non-load-bearing reinforced concrete elements, for instance, HDB requires a Professional Engineer for Civil or Structural works to supervise the demolition and to ensure proper repair of the affected RC structural elements (HDB, Renovation Guidelines for Building Works).

There is a second, low-tech check that costs nothing. HDB requires that after getting the renovation permit, the owner and the renovation contractor display the Notice of Renovation outside the flat until all the renovations are completed (HDB, Important Information on Renovations). A site with hacking under way and no notice on the door is a site worth pausing.

An HDB renovation permit is also not open-ended. HDB's general terms and conditions set a completion period that runs from the date the renovation permit is granted, and that period is shorter for an existing block than for a newly completed one and shorter again where only window works are involved, so read the dates printed on your own permit rather than work from a rule of thumb; HDB also asks owners to inform the HDB Branch managing the flat immediately once renovations are completed (HDB, Important Information on Renovations).

How to check the contractor behind the permit

The permit and the contractor are two separate checks, and the second one is public. HDB's View Directory of Renovation Contractors e-Service at services2.hdb.gov.sg opens without a login and offers a "Search By" menu with four options — CaseTrust Accredited Contractor, Company Name, Street Name and Directory Reference Number — across separate lists of renovation contractors, window contractors, and firms that are both. The same directory is published as an open dataset on data.gov.sg, where a UEN search settles the question in seconds.

Being listed is a floor, not a recommendation, and HDB says so in plain words: contractors in the directory "are aware of the HDB's requirements when they carry out renovations and to protect the structural integrity of the building. HDB does not endorse nor guarantee the quality of their works", and engaging them "is a private contract between you and the contractors, and HDB is not privy to it" (HDB, Looking for Renovation Contractors). A firm in Singapore that advertises itself as approved, certified or endorsed by HDB is describing something that does not exist; the accurate description is that the firm is listed in HDB's Directory of Renovation Contractors. The listing does carry real consequences for the contractor, though — HDB operates a Demerit Points System and states that a contractor will be delisted from the DRC on receiving a total of at least 24 demerit points within 24 months, with a 1-year suspension attached (HDB, Directory of Renovation Contractors).

The accreditation layer is where the consumer-protection numbers live. CASE received 787 complaints against renovation contractors in 2025, down 18.2% from 962 in 2024, and renovation prepayment losses fell 73.8% to S$190,667 while still ranking second highest of any industry (CASE media release, February 2026). CASE also reported that about 97% of the 962 renovation complaints it received in 2024 were against non-CaseTrust-accredited contractors (CASE media release, February 2025). CaseTrust accreditation for renovation businesses caps the initial deposit at a maximum of 20% of total contract cost, requires a 12-month workmanship warranty from completion, and requires a deposit performance bond covering closure, winding up or liquidation (CaseTrust Accreditation for Renovation Businesses).

What happens if work starts without a permit

Starting permitted work before the permit exists does not simply attract a warning. HDB states that it "will require you to discontinue, correct, or remove any unauthorised works and reinstate your flat to its original condition", and that "if the work is allowed to be retained, you will have to pay an administrative fee" (HDB, Application for a Renovation Permit). HDB also warns that a flat owner may face prosecution for failing to engage a contractor from the Directory of Renovation Contractors or for contravening the Housing and Development (Renovation Control) Rules, such as carrying out unauthorised demolition or hacking works, and lists a fine of up to $5,000 upon conviction (HDB, Important Information on Renovations).

The practical cost lands on the homeowner rather than on the contractor who cut the corner, because reinstatement means rebuilding a wall, re-waterproofing a floor or re-tiling to HDB's technical conditions after the fact — a second job on top of the first, and worth pricing before anyone lifts a hammer: TO FILL: reinstating one unauthorised hacked partition wall in a 4-room flat. That is the whole argument for treating permit approval, not deposit payment, as the start date of a renovation.

Condominiums and landed homes in Singapore

HDB renovation permits apply only to HDB flats, so a condominium or landed renovation in Singapore does not go through the Check Renovation Permit e-Service at all. Condominium works are governed by the management corporation's by-laws and renovation house rules, which vary from development to development and are not published in one central place, so the honest answer for a condominium owner is to obtain the current renovation rules from the managing agent in writing before finalising a scope. Structural alterations and external changes to private housing in Singapore are regulated by BCA under the Building Control Act and, for external and planning matters, by URA rather than by HDB — so confirm with those agencies which submissions and appointed professionals your specific works require before committing to a design.

The rule, in the regulator's own words

A permit from HDB is required before hacking or altering any walls in a flat.

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— HDB, via MyNiceHome

The text above is quoted from MyNiceHome — HDB renovation guide; the link goes to the primary source so it can be checked rather than taken on trust.