A catch-all code for specialised construction activities that do not fit neatly into other construction categories. Covers a wide range of trade and specialist construction work.
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What This Code Means
This is the go-to code for construction businesses that do not fit neatly into one of the more specific construction codes. Many small building firms use it because their work spans multiple specialisms. HMRC is familiar with this code being used broadly across the construction sector. If your work is primarily one specialism (electrical, plumbing, plastering), use the specific code instead — it gives a cleaner picture to HMRC and insurers.
Businesses That Use This Code
- General construction contractors doing mixed specialist work
- Damp proofing companies
- Scaffolding erection businesses
- Swimming pool construction
- Specialist waterproofing contractors
Related SIC Codes
How to Register This SIC Code
You provide your SIC code when registering your company at Companies House. You can also update it on your confirmation statement if your business activity changes. You can have up to four SIC codes — the first should be your primary (highest revenue) activity.
Why Your SIC Code Matters
- HMRC uses it to benchmark your income against sector norms
- Insurers use it to assess risk and set premiums
- Government grants and support schemes are allocated by SIC code
- Credit agencies categorise your business by SIC code
Read our full SIC codes explained guide for more detail. Use CalcPad for business tax calculations.