Thornbury & Crown

Thornbury & Crown is a proud family run construction company based in London, with over 12 years of experience operating as main contractors.

We specialise in high-quality home extensions, loft conversions, and commercial property projects. Alongside our construction services, we also provide comprehensive facilities management, supporting a wide range of high-end clients, including commercial buildings, educational institutions, and corporate environments.

We are proud to be members of the Federation of Master Builders (FMB), and hold a range of respected accreditations including SafeContractor approval, FireQual certification, FENSA-approved installer status, and IWC insurance-backed guarantees. These credentials reflect our ongoing commitment to safety, compliance, and delivering work to the highest recognised industry standards.

We take pride in adhering to the FMB’s strict code of practice giving our clients complete confidence that their project is in trusted hands. Our dedicated team many of whom have been with us for over a decade bring consistency, expertise, and a shared passion for delivering exceptional results with meticulous attention to detail.

At Thornbury & Crown, we prioritise clear communication, a personal approach, and a level of craftsmanship that sets us apart. Whether you’re expanding your home, undertaking a full refurbishment, or managing a commercial asset, we deliver spaces that are built to last and finished to impress.