HDB Listed Contractor (DRC): How the Directory Works

An HDB listed contractor is a renovation firm included in HDB’s Directory of Renovation Contractors, usually shortened to the DRC. If you are renovating an HDB flat, this is not an optional credential to weigh against price and style. HDB requires flat owners to engage contractors from the DRC for renovation works, and the listed contractor is the party that applies for the renovation permit and is accountable to HDB for how the work is carried out.

This guide explains what the DRC is, what a firm has to do to be listed and stay listed, how to check a contractor before you sign, how HDB’s demerit point system works, and — equally important — what DRC listing does not guarantee. It also covers the specialist trades that need their own separate licences.

What the Directory of Renovation Contractors is

The DRC is HDB’s register of renovation firms permitted to carry out renovation works in HDB flats. Its purpose is regulatory rather than promotional: it gives HDB a defined group of contractors who have met entry requirements, who understand HDB’s renovation guidelines, and who can be held accountable when those guidelines are breached. HDB’s own guidance is clear that owners should engage only DRC contractors, and that works such as demolition and hacking of walls, whether partial or complete, require HDB’s prior written approval.

In practice the DRC contractor submits the renovation permit application electronically on the owner’s behalf, supported by an acknowledgement form signed by the owner and, for works such as hacking or building walls, layout plans and details of the proposal. Once granted, the permit can be viewed by the owner through HDB’s e-services. Our guide to the HDB renovation permit explains which works need one and how long approvals typically take.

How a firm becomes an HDB listed contractor

HDB publishes the requirements for listing and renewal, and they are periodically updated, so treat the following as a summary of the framework rather than a definitive checklist. At the time of writing, requirements for renewal include registration of the business with ACRA, a financial guarantee in the form of a bank, insurance or finance company guarantee, a satisfactory track record, completion of HDB’s renovation training for public housing, and clean bankruptcy and criminal records for the firm’s owners and directors.

Listing is time-limited. HDB lists contractors for a fixed period, typically two years, after which the firm must apply for renewal before expiry. Renovation businesses with CaseTrust accreditation may be listed for a longer period, subject to conditions. The effect of these rules is that a DRC listing is a current status, not a permanent badge, and should be checked at the time you engage the firm.

The DRC also requires certain workers to hold specific qualifications. HDB’s terms require demolition and hacking works to be carried out by workers certified through the relevant BCA Academy course for renovation contractors, which is one reason structural mistakes are less common with competent DRC firms than with informal operators.

How to check an HDB listed contractor

Checking takes a few minutes and should be done before any deposit is paid.

Search the DRC directly using HDB’s online directory, by company name or UEN, rather than relying on a logo on a website or a brochure.
Match the entity named in your quotation and contract to the listed entity. Some interior design firms are not themselves listed but appoint a listed contractor; if so, find out exactly who will hold the permit and carry out the works.
Look at the demerit points shown in the contractor’s profile, which reflect infringements over the preceding period.
Confirm the listing will be valid throughout your project, not merely on the day you sign.
Keep a copy of the permit once it is granted, and check its scope against the works on site.

These checks fit naturally into the wider process of selecting a firm, which our guide to choosing a renovation contractor in Singapore covers in more detail.

The demerit point system and enforcement

HDB operates a demerit point system for DRC contractors. Infringements of HDB’s renovation guidelines — for example unauthorised works, working outside permitted hours or breaching conditions of approval — attract demerit points. Under HDB’s published terms, a contractor that accumulates 24 or more demerit points within 24 consecutive months faces suspension of its renovation registration for up to 12 months and a fine. HDB may also publish records of infringements, and has wider powers to suspend, cancel or debar contractors for non-compliance.

For owners, the demerit system has two practical uses. It provides a public signal of a contractor’s compliance history, and it gives the contractor a strong incentive to refuse instructions that breach the rules. A good contractor who tells you a wall cannot be hacked, or that noisy works must stop at 5pm, is protecting both of you.

Owners are not shielded from enforcement. Unauthorised works can be ordered to be reinstated at the owner’s cost, and offences by owners can attract penalties. The signed acknowledgement form commits the owner not to instruct anyone to carry out works such as hacking walls without approval.

What DRC listing does not guarantee

Being an HDB listed contractor tells you a firm has met HDB’s entry and conduct requirements. It does not tell you about design quality, workmanship standards, pricing, financial health beyond the required guarantee, or how the firm handles defects and disputes. Those are matters for your own due diligence: references, completed work, a clear itemised quotation, and a sensible payment schedule.

Nor does listing make every proposal acceptable. HDB’s rules on structural elements apply regardless of who the contractor is: reinforced concrete structural walls, columns, beams and slabs cannot be hacked, the household shelter must not be hacked or drilled, and wet-area finishes in new flats are subject to a waiting period before they can be removed. Where a proposal touches structural elements, HDB may require a Professional Engineer’s involvement, and many such changes will simply not be approved. Our explainer on load-bearing walls explains why.

If a contractor proposes structural changes casually, or suggests proceeding before the permit is granted, treat that as a warning regardless of their listing status. When a genuine structural question arises, an independent engineer from our consultancy can assess it before anything is demolished.

Specialist trades with separate licensing

Several trades in an HDB renovation need their own licences in addition to, or instead of, DRC listing. Electrical works must be carried out by an EMA-licensed electrical worker. Plumbing and sanitary works must be done by a PUB-licensed plumber, and gas works by an EMA-licensed gas service worker. Window installation and replacement must be done by a BCA-approved window contractor listed with HDB. Air-conditioner installation should be carried out by BCA-trained installers.

A well-organised main contractor will coordinate these trades and provide their licence details on request. Ask for them; it is a simple way to confirm the work will be done properly and recorded correctly.

Frequently asked questions

Is it compulsory to use an HDB listed contractor?

Yes, HDB requires flat owners to engage contractors listed in its Directory of Renovation Contractors for renovation works, and the listed contractor applies for the renovation permit on the owner’s behalf where one is needed.

How do I check if a contractor is on HDB’s DRC?

Search HDB’s online Directory of Renovation Contractors by company name or UEN, confirm the listed entity matches the one named on your contract, and review the demerit points shown in the contractor’s profile.

What happens if a DRC contractor breaks HDB’s rules?

The contractor incurs demerit points, and under HDB’s published terms accumulating 24 or more points within 24 consecutive months can lead to suspension of up to 12 months and a fine, while the owner may still be required to reinstate unauthorised works.

Can my interior designer do HDB works if they are not DRC listed?

The firm that carries out the works and applies for the permit must be DRC listed, so if your interior designer is not listed, confirm in writing which listed contractor will hold the permit and be responsible for the works.

Does DRC listing mean the contractor’s work is good quality?

No, DRC listing confirms that the firm meets HDB’s entry and conduct requirements, but workmanship, design quality, pricing and after-sales service still need to be checked through references, completed projects and a clear contract.

Unsure whether a proposed change in your flat is structural? Talk to our consultancy for independent advice, or get in touch before work begins.