BCA Approved Contractors Singapore 2026: Grades Explained, HDB ARC List & How to Choose
Hiring a contractor in Singapore involves navigating several registration systems — BCA grades, HDB's Approved Renovation Contractor list, and CaseTrust accreditation. This guide explains what each one means, which checks matter most for your project, and the red flags that signal an unlicensed or unreliable contractor.
Updated June 2026 · Singapore
How BCA Contractor Registration Works
The Building and Construction Authority (BCA) operates the Contractor Registration System (CRS), which grades contractors based on their financial capacity, track record, and technical capability. These grades determine which public sector projects a contractor is eligible to tender for.
For general building works, the CRS grades run from C3 through to A1:
| Grade | Max Contract Value | Typical Project Type |
|---|---|---|
| C3 | Up to $650,000 | Small renovation and fitting-out works |
| C2 | Up to $1.3 million | Medium-sized renovation contracts |
| C1 | Up to $4 million | Larger commercial fit-outs |
| B2 | Up to $13 million | Mid-tier construction projects |
| B1 | Up to $40 million | Substantial building contracts |
| A2 | Up to $130 million | Large-scale construction |
| A1 | Unlimited | Major infrastructure and development |
Important for homeowners
BCA grades are primarily designed for public sector procurement. If you are renovating your HDB flat or private home, a contractor's BCA grade is largely irrelevant to you. What matters is whether they are on the HDB ARC list (for HDB works) and whether they hold CaseTrust accreditation (for consumer protection).
To obtain and maintain a BCA grade, contractors must demonstrate adequate paid-up capital, a track record of completed projects in the relevant trade category, and qualified personnel. BCA conducts periodic audits and can downgrade or suspend registration if standards slip.
HDB Approved Renovation Contractors (ARC)
For the roughly 80% of Singaporeans who live in HDB flats, the most important contractor check is the HDB Approved Renovation Contractor (ARC) list. HDB maintains this register of contractors who have been assessed and approved to carry out renovation works in HDB flats.
When is an ARC contractor required?
ARC contractors are mandatory for certain categories of HDB renovation work:
- •Structural works (hacking walls, removing load-bearing elements)
- •Waterproofing of bathrooms and wet areas
- •Electrical rewiring that affects the distribution board
- •Works that affect common areas, corridors, or the building facade
- •Installation of air-conditioning ledges or external fixtures
- •Any work requiring an HDB Renovation Permit
How to search the HDB ARC directory
You can verify any renovation contractor's ARC status through the HDB website:
- 1Go to the HDB website (hdb.gov.sg)
- 2Navigate to e-Services → Renovation → ARC Directory
- 3Search by company name or UEN (Unique Entity Number)
- 4Check that the contractor's status shows as Active
- 5Note any specialisation — some ARC contractors are approved only for specific trade categories
Penalty for using a non-ARC contractor
If you engage a non-ARC contractor to carry out restricted works in your HDB flat, you may face a fine of up to $5,000. The contractor may also be required to rectify all unauthorised works at their own cost — but in practice, recovering costs from an unregistered contractor is extremely difficult. The liability ultimately falls on the flat owner.
HDB Renovation Permit
Structural works and several other categories require an HDB Renovation Permit before work begins. ARC contractors are responsible for applying for this permit on your behalf. Never allow a contractor to proceed with permit-required works before the permit has been granted — if works are done without a permit, HDB can require you to reinstate the flat to its original condition at your own expense.
CaseTrust Accreditation for Renovation Contractors
CaseTrust is a quality and trust mark administered by the Consumers Association of Singapore (CASE). For renovation contractors, the relevant accreditation is the CaseTrust-RCMA joint accreditation, which combines CASE's consumer protection standards with the Renovation and Decoration Advisory Centre of Singapore (RADAC) / RCMA's industry standards.
What CaseTrust accreditation provides
Deposit protection
Accredited contractors must hold customer deposits in a trust account. This protects your money if the contractor becomes insolvent or abandons the project.
Dispute resolution
If a dispute arises, CASE manages a structured mediation process. This is faster and cheaper than going to court.
Code of conduct
Contractors must adhere to fair trading practices — no misleading quotes, no high-pressure sales, clear written contracts before work begins.
Ongoing audits
CaseTrust accreditation is not a one-time award. Contractors are audited periodically and can lose accreditation for sustained complaints.
When does CaseTrust matter most?
CaseTrust accreditation is especially important when you are paying a significant deposit — typically anything above $5,000. HDB renovation projects for a 4-room flat can easily run $40,000 to $70,000, with deposits of 10–20% (i.e. $4,000–$14,000) paid upfront. Without CaseTrust protection, that deposit has no formal safeguard if the contractor disappears.
How to verify CaseTrust status
Go to the CASE website (case.org.sg) and search the CaseTrust directory by company name. The directory shows the accreditation type, validity period, and any current complaints on record. Only businesses actively listed are accredited — do not accept a contractor's word that they are CaseTrust-certified without checking the live directory.
How to Verify a Contractor: A Full Checklist
Before signing any contract or paying any deposit, run through these verification steps:
1. Check ACRA registration
Search the company on BizFile+ (bizfile.gov.sg) to confirm they are a properly registered Singapore business. A sole proprietor operating under a name should also appear. If the company cannot be found, walk away immediately.
2. Check HDB ARC status (for HDB works)
Use the HDB ARC directory to confirm they are on the approved list. If the works require a permit or involve structural elements, ARC status is mandatory — not optional.
3. Check BCA CRS (for large or commercial works)
For larger projects, commercial fit-outs, or works where the contractor claims BCA registration, verify their grade and standing on the BCA CRS portal.
4. Check CaseTrust directory
Search the CASE CaseTrust directory to confirm current accreditation status, especially before paying any deposit above $5,000.
5. Request at least two references
Ask for contact details of recent clients with similar projects. Call them — do not just ask for photos. Ask specifically about whether the contractor finished on time, whether there were hidden costs, and how disputes were handled.
6. Review the written contract carefully
A proper renovation contract should include itemised costs (materials and labour separately), a clear payment schedule tied to milestones, a defect liability period (typically 6–12 months), start and completion dates, and dispute resolution terms.
Red Flags: Warning Signs of a Cowboy Contractor
Singapore has its share of unlicensed and unscrupulous renovation contractors. These warning signs should prompt you to look elsewhere regardless of how competitive the quote appears:
Cash-only payments
No paper trail. Makes disputes nearly impossible to resolve and may indicate the contractor is not registered.
No written contract
Verbal agreements are unenforceable in practice. Any reputable contractor will provide a detailed written contract before starting.
Pressure to sign quickly
"This price is only valid today" is a classic high-pressure sales tactic. Legitimate contractors do not use it.
Cannot produce licence or registration
Any contractor claiming to be ARC-approved or BCA-registered should be able to show you their registration number immediately.
Quote drastically below all others
Quotes 30–40% below market usually indicate hidden costs, inferior materials, or a plan to abandon the project after collecting the deposit.
Demands a very large upfront deposit
Industry standard is 10–20% upfront. Requests for 50% or more before work begins are a serious warning sign.
No fixed business address
Contractors operating only via WhatsApp with no verifiable office address are difficult to pursue if things go wrong.
Unwilling to apply for HDB permit
If a contractor suggests skipping the permit to "save time", they are putting you at legal and financial risk.
Frequently Asked Questions
Is a BCA grade required for home renovation in Singapore?
For most residential home renovations, a specific BCA grade is not a legal requirement. What matters more is whether the contractor is on the HDB Approved Renovation Contractors (ARC) list for HDB flat works, and whether they hold CaseTrust accreditation. BCA grades (C3 to A1) are primarily relevant for public sector projects and larger commercial or structural contracts.
What is the difference between an ARC contractor and a BCA-registered contractor?
BCA registration covers contractors working on a wide range of construction projects, including public sector tenders. ARC registration is specific to HDB and is required for contractors carrying out structural or sensitive renovation works in HDB flats. A contractor can be BCA-registered but not on the HDB ARC list, and vice versa. For HDB flat owners, ARC status is the more important check.
What does CaseTrust accreditation protect me from?
CaseTrust-RCMA joint accreditation provides several consumer protections: a structured dispute resolution process administered by CASE, mandatory deposit protection (contractors must hold customer deposits in a trust account rather than using them freely), and adherence to a code of conduct. This is especially important when paying deposits above $5,000, as it limits your exposure if the contractor goes bankrupt or abandons the project.
How long does a contractor stay on the HDB ARC list?
HDB periodically audits ARC contractors and can suspend or remove them from the list if they receive complaints, fail audits, or violate HDB's renovation guidelines. Contractors must maintain their ARC status through ongoing compliance. Always check the current HDB ARC directory before engaging a contractor, even if you have used them before, as their status may have changed.
How do I report a bad contractor in Singapore?
You have several options. For HDB ARC contractors, report to HDB directly via the HDB website or InfoWEB portal. For consumer disputes about renovation contracts, file a complaint with CASE. For disputes that cannot be resolved, you can bring a claim to the Small Claims Tribunal (for amounts up to $20,000) or the District Court. If the contractor is CaseTrust-accredited, CASE will manage the dispute resolution process.
What protection does the Consumer Protection (Fair Trading) Act give me?
The Consumer Protection (Fair Trading) Act (CPFTA) protects consumers against unfair practices by suppliers, including misleading claims, high-pressure sales tactics, and failure to honour contracts. If a renovation contractor engages in unfair practices under the CPFTA, you can seek a civil remedy through the courts or the Small Claims Tribunal. CASE can also help mediate disputes under this Act before formal legal proceedings.
Related Singapore Guides
HDB Renovation Cost Guide 2026
Full breakdown of renovation costs by flat type, from 3-room to executive.
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Electrician Costs Singapore 2026
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Renovation Costs Singapore 2026
Full renovation cost hub — HDB, condo, and what each trade costs.
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