Development Of Building Projects

Details for Development Of Building Projects

SIC code 41100 is used for businesses carrying out activity in the field of development of building projects. In plain English, it is likely to include contractors, trades, builders, installers, maintenance firms, developers and specialist construction service providers, with day-to-day activity often involving site work, project delivery, materials, labour, repairs, installations and compliance with building requirements. As of June 2026, 41100 ranks 10th out of 731 five-digit SIC codes, with 135,254 UK companies registered under it, making it one of the leading SIC choices by registered company volume.

This sits within a classification system that has been used in the UK since the 1940s; Companies House filings moved from 4-digit SIC 2003 codes to the current 5-digit SIC 2007 scheme in 2008–2009, bringing the UK register into line with NACE Rev. 2. Where this is only part of a wider business model, the ability to file up to four SIC codes lets UK companies describe several genuine activities rather than forcing everything into one broad category.

The short official label is deliberately compact, so the real-world businesses behind it may describe themselves using broader phrases such as development of building projects services, specialist development of building projects providers, operators in related supply chains, or companies supporting customers who need this form of commercial activity. A company using this code might be newly incorporated, dormant, small and owner-managed, or part of a larger group, so the SIC entry should normally be read alongside accounts, confirmation statements, websites and other commercial signals. The classification is especially valuable when comparing suppliers, prospecting for customers, segmenting a database, reviewing competition or checking how a company presents its principal line of business on the public record.

For search and data work, the wording should be understood broadly: companies may use different everyday terms for the same activity, including trade names, sector jargon, abbreviated service descriptions and customer-facing language. The code therefore works best as a structured indicator of economic activity rather than a complete profile of the company, because many organisations evolve, add services or reorganise after incorporation.

Our Recently Formed marketing database is updated daily on the previous days company activity at Companies House to allow you to find new companies quickly and easily (whereas this categorised page of data counts is updated monthly). We provide the widest choice of filters available for Recently Formed Companies. And its not just Newly Formed companies - We have over 4 million companies - from new starters to companies over 100 years old, able to be filtered geographically or by category, but if you are looking to get in touch with companies within this category, the below table shows how many companies were added to the category, month by month over the last couple of years.