HSIC Classifications for Construction and Engineering Companies in Hong Kong

Eligibility: Who Must Register Under a Construction or Engineering HSIC Code?

Any person or company carrying on a construction, engineering, or related trade in Hong Kong must register for a Business Registration Certificate (BRC) under the Business Registration Ordinance (Cap. 310) and select the appropriate HSIC code from the official Version 2.0 classification published by the Census and Statistics Department. This includes contractors, subcontractors, engineering consultants, architects, surveyors, and specialist trades such as electrical, plumbing, and foundation works.

Under section 5(1) of the Business Registration Ordinance (Cap. 310), "every person carrying on any business in Hong Kong must apply for registration within one month of commencement."

Non-residents may register a Hong Kong company for construction or engineering purposes, but must appoint a local company secretary and a registered office address in Hong Kong. There is no restriction on foreign ownership for construction companies, though certain public works contracts may require local licensing or registration with the Construction Industry Council (CIC).

HSIC Codes for Construction and Engineering: The Complete List

The HSIC Version 2.0 classification divides construction and engineering activities into two main sections: Section F – Construction (codes 41000–43900) and Section M – Professional, Scientific and Technical Services (codes 71110–71130 for engineering and architectural services). Below is the definitive list of relevant codes.

Important: If your company provides both design and construction services (e.g., design-and-build contracts), you must register under the primary activity code that generates the majority of your revenue. The Inland Revenue Department (IRD) may request justification for your chosen code during business registration or tax filing.

Ongoing Compliance Execution

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Timelines: How Long Does HSIC Code Assignment Take?

The HSIC code is assigned at the point of business registration, not as a separate application. The timeline depends on the registration method:

• Online registration via the Companies Registry e-Registry: Code is assigned immediately upon submission. The BRC is issued within 1–2 working days.
• Paper application to the Business Registration Office: Code is assigned within 7–14 working days after submission.
• Amending an existing code: Submit Form IRBR200 (Application for Amendment of Business Registration Particulars) to the IRD. Processing takes 7–10 working days.

Step-by-step process for code selection:

1. Identify your primary activity: Determine the single construction or engineering activity that generates the most revenue.
2. Match to HSIC code: Use the table above or the official HSIC V2.0 search tool to find the exact code.
3. Register or amend: Include the code on your BR application (Form 1(a) or 1(c)) or submit an amendment if already registered.
4. Receive confirmation: The IRD will issue a BRC showing your selected HSIC code. Note: If your business performs multiple activities (e.g., general building construction and electrical installation), you must select the code for the predominant activity. You cannot register multiple HSIC codes for a single business registration.

Cost Metrics: Fees for Business Registration with HSIC Codes

The cost of business registration is fixed regardless of the HSIC code selected. As of the latest published fee schedule:

• Government fee: HKD 2,150 per year (for the Business Registration Certificate)
• Levy: HKD 250 per year (for the Protection of Wages on Insolvency Fund)
• Total annual charge: HKD 2,400
• Three-year validity: HKD 5,720 (includes levy)

Additional costs if amending an existing code:

• Amendment fee: HKD 310 (for Form IRBR200)

Important: These fees are subject to change. Consult the latest fee schedule from the Inland Revenue Department at www.ird.gov.hk.

Suitability: Who Should Use Each Code?

Best for:

• HSIC 41000 (Construction of buildings): General contractors building residential towers, office blocks, or industrial facilities. Suitable for companies with annual turnover above HKD 5 million.
• HSIC 43210 (Electrical installation) and 43220 (Plumbing, HVAC): Specialist subcontractors working on MEP (mechanical, electrical, plumbing) systems. Ideal for SMEs with 2–20 employees.
• HSIC 71110 (Architectural and engineering activities): Consultancy firms providing design, structural engineering, or project management services. Best for professional practices with registered engineers or architects.
• HSIC 43900 (Other specialised construction): Niche trades such as scaffolding, foundation piling, or waterproofing. Suitable for companies with specific technical expertise.

Not for:

• HSIC 41000 is not suitable for companies that only provide consultancy or design services without physical construction.
• HSIC 71110 is not appropriate for companies that perform hands-on construction work (e.g., installing wiring or plumbing). Those activities fall under Section F codes.
• HSIC 43110 (Demolition) requires additional licensing from the Buildings Department and is not suitable for general contractors without specialist demolition capability.

When to consider multiple business registrations:

If your company performs two distinct activities (e.g., both general construction and separate engineering consultancy), you may need to register two separate businesses under different HSIC codes. Each registration incurs its own fee.

Frequently Asked Questions

Q: Can I change my HSIC code after registration? A: Yes. Submit Form IRBR200 to the IRD with a fee of HKD 310. Processing takes 7–10 working days.

Q: What if I select the wrong HSIC code? A: The IRD may query your code during tax filing or audit. If the code does not match your actual business activity, you risk a penalty for incorrect registration. Amend the code promptly.

Q: Do I need a specific HSIC code for government tenders? A: Not directly, but many government contracts require registration with the Construction Industry Council (CIC) or the Development Bureau's Approved Contractor List. Your HSIC code should match the scope of work in your tender.

Q: Is there a penalty for not registering under the correct code? A: Yes. Under the Business Registration Ordinance, providing false or misleading information can result in a fine of up to HKD 5,000 and imprisonment for 6 months.

Final Checklist for Selecting Your HSIC Code

1. Identify your single primary revenue-generating activity.
2. Cross-reference with the HSIC V2.0 table above.
3. Verify that the code description matches your actual operations.
4. Include the code on your BR application or amendment form.
5. Keep a record of your justification in case of IRD query.

-> Use the HSIC Code Finder at /hsic-finder to look up your specific code.