Division 41 of the UK SIC 2007 list. It holds 3 codes, listed in full below with the number of active UK companies filed under each.
Division 41 is one of the most used classifications on the UK register. It splits three ways. Code 41100, development of building projects, is picked by developers and by companies set up to hold one scheme. Then come the two building codes. Code 41202 covers domestic construction, so house builders and residential contractors live there. Code 41201 covers commercial buildings. The developer code is popular partly because property investors use it for their ventures. So plenty of 41100 companies employ no tradespeople at all.
The construction supply chain sells into this division from every side. Builders' merchants and tool hire firms want trade accounts. Insurance brokers arrange contract works and liability cover. Accountants untangle CIS and the VAT reverse charge. Software firms sell estimating and project tools. Development finance brokers and lenders focus on 41100 incorporations, which often come just before a land purchase. Under 41202, a new company usually means a sole trader has gone limited. That is the best moment for accountancy and insurance offers. Growth signals mean bigger projects and a bigger materials spend.
Code 41100 is for developing building projects. That means pulling together land, funding and consents, then subcontracting the build. Codes 41201 and 41202 are for physically constructing commercial and domestic buildings. A developer who also builds can list both. Small builders sometimes pick 41100 when 41202 fits better. The register accepts either, but the right code helps insurers and lenders read the business correctly.
Often not. Renovation, extension and refurbishment of houses sits under 41202, alongside new build domestic work. If your work is really one trade, a division 43 code may fit better than 41. Review your codes at each confirmation statement. No approval is needed, and it keeps the public record in line with what the business actually does.
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