How to verify a Singapore renovation contractor in ten minutes

Renovation firms in Singapore are checked, not taken on trust, and the checking costs nothing. Three public records settle most of the question: HDB's Directory of Renovation Contractors, published as an open dataset on data.gov.sg; the live listing of CaseTrust-accredited businesses at casetrust.case.org.sg; and the Unique Entity Number (UEN) printed on the firm's own quotation. None of the three requires an account, a phone call, or a site visit.

What the HDB registered renovation contractor list actually is

What most homeowners call the HDB registered renovation contractor list has an official name: the Directory of Renovation Contractors, or DRC, maintained by the Housing and Development Board. Under the Housing and Development (Renovation Control) Rules, an HDB flat owner must engage a contractor listed in the DRC, and contravention is an offence carrying a fine not exceeding S$5,000 (Singapore Statutes Online). The obligation sits on the flat owner, which is the part people miss — if an unlisted contractor does the work, the owner is the one in breach.

The Directory of Renovation Contractors is also a live disciplinary register rather than a permanent badge. HDB operates a demerit point system for registered renovation contractors under which a contractor accumulating at least 24 demerit points within 24 months is delisted from the Directory (HDB). A firm that was listed when a friend renovated two years ago may not be listed today, so the check has to be run now, against the current record, for your own job.

Step one: take the UEN off the quotation, not the brand name off the website

Search the public records by UEN, because the brand name on a Singapore renovation company's website is frequently not the name the government holds. Interior design firms commonly trade under a short marketing name while the registered entity is a longer "PTE. LTD." name, and HDB's dataset records the registered entity name against the UEN, while CASE's accredited-business listing is organised by trading name. A search for a marketing name in the wrong register returns nothing, the homeowner concludes the firm is unlisted, and the conclusion is wrong — or, worse, a search for a common word returns a different company altogether and the homeowner concludes the firm is fine.

A Singapore renovation quotation issued by a registered company normally carries its UEN in the letterhead or the footer beside the registered address. If a quotation has no UEN anywhere on it, that is the first finding of your ten minutes, before you have opened a single website. Ask for the UEN in writing, and if it does not arrive, stop there.

Step two: search HDB's Directory of Renovation Contractors

Open the DRC dataset on data.gov.sg and search the UEN. The dataset carries seven fields for every listed business — UEN, directory reference number, company name, address, postal code, email address and contact number — so a matching record gives you five cross-checks at once rather than a bare yes. As at 9 August 2026 the DRC dataset on data.gov.sg held 2,708 listed renovation businesses, which tells you something in itself: DRC listing is a wide net, not a shortlist.

Read the returned record against the quotation in front of you, field by field. The address, postal code and phone number in the record should match the ones on the quotation, and a listed UEN attached to an address the firm has never mentioned deserves a direct question. 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, and that record can be pulled from the data.gov.sg dataset in a few seconds by anyone who would rather confirm it than take it on faith.

Step three: check CaseTrust separately, because it is a different list

CaseTrust accreditation is administered by the Consumers Association of Singapore and is entirely separate from HDB's Directory of Renovation Contractors, so a firm can appear on one list and not the other. CASE reported that approximately 97% of the 962 renovation complaints it received in 2024 were against non-CaseTrust-accredited contractors (CASE media release, February 2025). That 97% ratio is the strongest argument for spending the extra two minutes on the second list.

The public CaseTrust listing shows each business's accreditation type and, importantly, an expiry date — accreditation lapses, and a lapsed accreditation looks identical to a live one on a company's own marketing material. CASE's accredited-business web listing carried 1,011 accredited businesses across all sectors on 9 August 2026, of which 318 entries held a renovation accreditation of some kind. Against the 2,708 businesses in HDB's DRC dataset, those 318 renovation accreditations show the shape of the Singapore market: DRC listing is the legal minimum for HDB work, while CaseTrust accreditation is a much smaller subset whose members have additionally committed to a capped deposit, a standard written contract and a 12-month workmanship warranty (CASE).

Step four: check the specific approval your particular job needs

Some trades carry an approval requirement that a general DRC listing does not cover, and windows are the clearest case. HDB states that "you must engage a Building and Construction Authority (BCA) approved window contractor listed in HDB's directory for all window installation/ replacement work" (HDB window works guidelines). If your scope includes replacing casement or sliding windows, ask which BCA-approved window contractor will do that portion and check that name too — main contractors routinely and legitimately subcontract window works, but the subcontractor still has to hold that approval.

Permit competence is worth testing in the same conversation. HDB requires a permit before hacking or altering any walls (MyNiceHome HDB renovation guide), and HDB states that renovation contractors are to submit the flat's floor plan showing the proposed work, together with the electronic application for renovations (HDB). Asking a prospective contractor to describe that submission is a fast competence test: a firm that does HDB work every week answers it without hesitation.

What being on the list does not tell you

HDB states that it does not endorse nor guarantee the quality of works of contractors listed in the Directory of Renovation Contractors, and that engaging one is a private contract between the homeowner and the contractor (HDB). DRC listing therefore answers one question — may this firm lawfully carry out renovation work in an HDB flat — and answers nothing at all about workmanship, sequencing, site supervision, or how the firm behaves when something goes wrong.

Complaint volume shows the residual risk is real even as it falls. CASE received 787 complaints against renovation contractors in 2025, down 18.2% from 962 in 2024 (CASE media release, 9 February 2026). A registry check removes the worst category of counterparty; it does not remove disputes about scope, delay and finish quality, which are settled by a clear contract rather than by a directory.

Marketing claims that should end the conversation

A renovation firm that describes itself as approved, certified or endorsed by HDB is claiming something HDB does not do, because HDB states that it does not endorse nor guarantee the quality of works of contractors in its Directory (HDB). The only accurate phrasing available to any firm in Singapore is that it is listed in HDB's Directory of Renovation Contractors, and a company claiming more than that is either careless with language or counting on you not to check.

A refusal to put the UEN, the registered address and the full scope in writing before any payment is the second red flag. CaseTrust caps the initial deposit an accredited renovation business may collect at a maximum of 20% of the total contract cost (CASE), so a demand for half the contract value up front is not a negotiating position — it is information about how the firm is funded.

What ten minutes cannot check

Ten minutes of public-record checking cannot tell you whether a firm's carpentry is square, whether its project manager returns calls in week six, or whether the crew on your job is the crew that built the showroom. Those questions are answered by visiting a live site rather than a showroom, by asking for the names of the people who will actually run your project, and by reading the payment schedule and variation clauses closely before signing. The registry check is the filter to run first precisely because it is cheap: it costs ten minutes and removes the counterparties that no amount of good chemistry can fix.

The rule, in the regulator's own words

Under the Housing and Development (Renovation Control) Rules, an HDB flat owner must engage a contractor listed in HDB's Directory of Renovation Contractors; contravention is an offence carrying a fine not exceeding S$5,000.

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— Housing and Development (Renovation Control) Rules

The text above is quoted from Housing and Development (Renovation Control) Rules, SSO; the link goes to the primary source so it can be checked rather than taken on trust.