UK SIC 2007 · 41201
Construction of commercial buildings
Construction of commercial buildings is UK SIC code 41201, part of division 41 (Construction of buildings) in the SIC 2007 classification. As of the July 2026 Companies House register, 40,606 active UK companies list 41201 among their SIC codes, and 33,693 list it as their first code. That makes it the third most used code in its division.
As of the July 2026 Companies House register, 40,606 active UK companies list 41201 among their SIC codes (33,693 as their first code).
Companies House data refreshed daily. Page reviewed July 2026.
Division 41: Construction of buildings
Division 41 is one of the most heavily used classifications on the UK register. It divides into 41100, development of building projects, chosen by developers and by many companies set up to hold a single scheme, and the two building codes: 41202 for domestic construction, the natural home of house builders and residential contractors, and 41201 for commercial buildings. The developer code's popularity partly reflects property investors using it for development ventures, so not every 41100 company employs a single tradesperson.
The construction supply chain prospects this division from every direction: builders' merchants and tool hire opening trade accounts, insurance brokers arranging contract works and liability cover, accountants handling CIS and VAT reverse charge complications, and software firms selling estimating and project tools. Brokers and lenders offering development finance focus on 41100 incorporations, which often precede a land purchase. For contractors under 41202, a new incorporation frequently marks a sole trader taking the limited company step, an ideal moment for accountancy and insurance offers, while growth signals suggest bigger projects and bigger material spend.
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Where SIC 41201 clusters in the UK
About SIC 41201
How many UK companies use SIC code 41201?
40,606 active UK companies include 41201 (Construction of commercial buildings) among their up-to-four registered SIC codes, of which 33,693 list it first. Figures are from the July 2026 Companies House register snapshot, counting active companies only.
What is the difference between 41100 and the construction codes 41201 and 41202?
41100 is for developing building projects: assembling land, funding and consents, with construction typically subcontracted. 41201 and 41202 are for physically constructing commercial and domestic buildings respectively. A developer that also builds can list both. Small builders sometimes pick 41100 when 41202 fits better; the register accepts either, but the accurate code helps insurers and lenders read the business correctly.
Should a builder change SIC code when moving from renovations to new builds?
Renovation, extension and refurbishment of houses generally sits under 41202 alongside new build domestic work, so a change is often unnecessary. If your work is closer to a single trade, a division 43 code may fit better than 41. Reviewing codes on each confirmation statement needs no approval and keeps the public record aligned with what the business actually does.
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