Short answer: A BCA contractor grade is the financial grade a firm holds for a workhead under BCA’s Contractors Registration System (CRS). For general building (CW01), grades run from A1, the largest, down to C3. Each grade sets the maximum value of public sector contract the firm may tender for, and reflects its financial strength, track record and technical staff.
Owners and facility managers see these grades quoted in tender documents, company profiles and prequalification forms. Knowing what a grade does and does not tell you helps you shortlist contractors that are sized correctly for your project, whether it is a public tender or a private development.
Key takeaways
- CRS is BCA’s national registry of construction firms, with about 50 workheads grouped into construction (CW), construction-related (CR), M&E (ME), trade (TR) and regulatory (RW) categories.
- Construction workheads such as CW01 General Building use seven grades: A1, A2, B1, B2, C1, C2 and C3.
- For 1 July 2026 to 30 June 2027, CW01 tendering limits run from $0.8 million for C3 to unlimited for A1.
- Grades are set by financial capacity, track record, technical personnel and, for some grades, safety and other certifications.
- A grade is a measure of capacity, not a guarantee of quality, so owners should still check relevant projects, safety performance and key staff.
What is the BCA Contractors Registration System?
CRS is the registry BCA uses to classify construction firms by type of work and financial capacity. BCA describes it as Singapore’s nation-wide registry of construction firms, used mainly for public sector procurement.
Registration is required for firms that want to tender for public sector construction projects or act as first-level subcontractors on them. Since 1 June 2025, firms that employ construction S Pass or Work Permit holders must also be registered. Private sector work does not require CRS registration, although other licensing rules still apply.
Workheads and grading groups
Each firm registers only for the workheads that match the work it does. The grading scale depends on the group:
| Group | Examples | Grades |
|---|---|---|
| Construction Workhead (CW) | CW01 General Building, CW02 Civil Engineering | A1, A2, B1, B2, C1, C2, C3 |
| Construction-Related Workhead (CR) | Specialist trades and construction-related services | L1 to L6, or Single Grade |
| Mechanical and Electrical (ME) | Electrical, air-conditioning, lifts and other building services | L1 to L6 |
| Trade Heads (TR) | Trades for subcontractors | Single Grade |
| Regulatory Workheads (RW) | Registrations required by regulation | Not graded |
When people talk about a “BCA A1 contractor” or a “B1 builder”, they almost always mean the firm’s grade under CW01 General Building.
What are the CW01 grades and tendering limits?
Each CW01 grade has a tendering limit, which is the largest public sector contract value a firm in that grade may bid for. BCA reviews these limits periodically and publishes them by validity period.
| CW01 / CW02 grade | Tendering limit, 1 July 2026 to 30 June 2027 |
|---|---|
| A1 | Unlimited |
| A2 | $105 million |
| B1 | $50 million |
| B2 | $16 million |
| C1 | $5 million |
| C2 | $1.6 million |
| C3 | $0.8 million |
Source: BCA CRS tendering limits. The same limits apply to CW01 and CW02. Always check the current table on BCA’s website before relying on a figure, as limits are revised for each period.
How does BCA decide a contractor’s grade?
BCA grades a firm against the Specific Registration Requirements (SRR) for each workhead. The main tests are financial capacity, track record, technical personnel and, for some grades, certifications.
Financial capacity
Firms submit audited accounts, or management accounts for some grades, no more than 12 months old. BCA’s CRS registration guidelines set out the general rules. The CW SRR (August 2024 edition) sets one financial figure per grade and states that minimum paid-up capital and minimum net worth must each be met.
Track record
Firms must show completed or ongoing contracts in the relevant workhead, usually over the past three years. For CW01, the SRR also sets minimum main contract and single contract values for the higher grades, and counts subcontract value at 50%.
Technical personnel
Technical staff must be full-time employees. The guidelines require Singaporean and PR technical staff to earn at least $2,400 a month, and higher grades require more registered professionals and productivity-trained personnel.
Certifications
The CW SRR lists safety and other certifications for certain grades. For example, the larger grades such as A1 and B1 call for ISO 45001 or bizSAFE STAR together with the Green and Gracious Builders Scheme, while C1 and C2 require bizSAFE Level 3 or ISO 45001.
The table below gives the CW01 financial and track record figures from the August 2024 SRR for reference. Check the latest SRR before relying on them.
| CW01 grade | Financial requirement | Track record over past 3 years |
|---|---|---|
| A1 | $15 million | $150 million |
| A2 | $6.5 million | $65 million |
| B1 | $3 million | $30 million |
| B2 | $1 million | $10 million |
| C1 | $300,000 | $3 million |
| C2 | $100,000 | $1 million |
| C3 | $25,000 | $100,000 |
Validity and renewal
New firms may start on probationary registration. Once they meet the track record requirement, registration runs for two years, and firms can apply to renew about two months before expiry. A firm’s grade can therefore move up or down over time as its accounts and project record change.
Is a CRS grade the same as a builder’s licence?
No. A CRS grade is a registration for public sector procurement, while a builder’s licence is a legal requirement under the Building Control Act for carrying out building works that need plan approval.
BCA’s licensing scheme has a General Builder Class 1 licence with no project value limit and a Class 2 licence limited to projects of $6 million or less, plus Specialist Builder licences for works such as piling and structural steelwork. The licence applies to public and private projects alike. A main contractor on a private project therefore needs the right licence, even though it does not need a CRS grade. Our article on the role of a main contractor in Singapore covers these duties in more detail.
What does a contractor grade mean for your project?
For public projects, the grade decides whether a firm can bid at all. For private projects, it is a useful indicator of scale and financial strength, but it should be one input among several.
Public sector owners and agencies
Government agencies, statutory boards and town councils using public procurement rules will specify a minimum workhead and grade in the tender. A firm whose tendering limit is below the contract value cannot be awarded the job.
Private owners, developers and REITs
Private clients are free to choose any licensed builder. Many still ask for a CW01 grade as a quick screen, because the grade tells you BCA has checked the firm’s accounts, track record and staff within the registration period. A practical approach is to match the grade’s tendering limit to your project value, then look closely at relevant experience.
What a grade does not tell you
- Whether the firm has built your building type, such as a ramp-up warehouse, an occupied factory or a school sports hall.
- Who will actually manage your site and how stretched that team is.
- The firm’s current safety performance, which you can check separately on MOM’s CheckSafe service.
- How the firm handles design responsibility under a design and build contract.
Our checklist on how to choose a design and build contractor gives practical questions to fill these gaps, and our guide to design and build in Singapore explains when that route suits a project.
How do you check a contractor’s BCA grade?
Search the firm in the BCA Directory, which BCA provides so that anyone can search registered firms and verify their registration status, including workheads and grades.
- Go to the BCA Directory linked from BCA’s CRS page and search by company name.
- Check the workhead matches your work, for example CW01 for general building rather than only a trade or M&E workhead.
- Note the grade and registration status, and confirm the grade’s tendering limit covers your contract value.
- Ask for the firm’s builder’s licence and confirm the class suits your project value.
- Ask for a list of comparable completed projects with client contacts.
How Nippon Builders can help
Nippon Builders is a Singapore general building and design and build contractor. We deliver general building construction, design and build and A&A works for public agencies, town councils and private owners. Our company profile shows bizSAFE, SAC accredited certification body and OHSAS 18001 logos, and we are happy to share our current registration details when you prequalify contractors.
Public sector projects in our record include building works for HDB at Serangoon North Contract 21, repair and rectification of indoor sports hall buildings at West Grove Primary School and Yuhua Primary School for the Ministry of Education, and A&A works for DSTA along Sungei Gedong Road. See our project references and portfolio for more.
If you are prequalifying contractors for a building project, contact Nippon Builders or call +65 6898 2500 and we will walk you through our credentials and approach.
Frequently asked questions
An A1 contractor is a firm registered under BCA’s Contractors Registration System in the highest financial grade for a construction workhead, usually CW01 General Building. A1 firms have no tendering limit for public sector contracts. To reach A1, a firm must meet the highest financial, track record and technical personnel requirements in the Specific Registration Requirements for that workhead.
For CW01 General Building and CW02 Civil Engineering, BCA lists a B1 tendering limit of $50 million for the period 1 July 2026 to 30 June 2027. BCA revises tendering limits for each period, so check the current table on BCA’s website before relying on the figure for a specific tender.
No. CRS registration is needed for public sector tenders and, since 1 June 2025, for firms employing construction S Pass or Work Permit holders. Private owners can appoint any suitably licensed builder. Many still use the CW01 grade as a quick check of a firm’s financial capacity and track record when shortlisting.
After any probationary period, and once the track record requirement is met, CRS registration is generally valid for two years. Firms can apply to renew about two months before expiry. Additional workhead registrations made during a validity period end on the same date as the current registration, according to BCA’s registration guidelines.
CW01 covers general building works, such as residential, commercial and industrial buildings. CW02 covers civil engineering works, such as roads, drainage and other infrastructure. Both workheads use the same grades from A1 to C3, and BCA currently lists the same tendering limits for both.