25 Best Builders in London for 2026

Loft conversions on the terraced and semi-detached houses common across Croydon and the surrounding boroughs are the main work of LMB Group Ltd., a building firm whose website is built around that single job. Taking an unused roof space and turning it into a bedroom, study or bathroom is a structural project, and the firm treats it as one.

LINX Design And Build provides comprehensive building services across London. They handle both design and construction projects for residential and commercial clients throughout the capital.

North Star Building Solutions Limited provides comprehensive building services to clients across London from their Gordon Hill base. The company handles various construction and building projects for residential and commercial properties.

Families across Bromley extending or reworking their homes turn to Chatsworth Building & Renovations for structural and renovation work, from loft conversions to full refurbishments. Work is carried out with attention to how households actually use their space day to day.

Building Vision London Ltd provides comprehensive building services across London, operating from their base in South West London. Their experienced team handles construction and renovation work on various building projects for residential and commercial clients throughout the capital.

Home Republic is a Croydon building firm taking on loft conversions, rear and side extensions, and full house refurbishments. Work is carried out across Croydon and neighbouring parts of south London.

Bromley households needing building work have Flawless Spray Limited operating locally. Work is carried out across the area, with jobs organised directly for residents in and around the town.

MSJ Building & Construction Services operates in Bromley, covering work from house and loft extensions through to internal refurbishments, hard landscaping, and construction management. The business presents itself as handling projects from the planning stage to completion, rather than focusing on a single trade.

Gurra Construction is a building contractor based in South West London, serving London and surrounding areas with professional construction services. They handle various building projects for residential and commercial clients throughout the capital.

In Romford and the surrounding parts of east London and Essex, Sbds Construction Ltd works as a general builder, taking on residential building projects. Its website sets out the work it undertakes and offers a route for enquiries.

A typical call starts with a kitchen extension or loft conversion that's outgrown the drawing board stage, and needs a builder to see it through from foundations to finish. Londonwide Construction, based in Bromley, takes on that groundwork-to-plastering process directly. Clients tend to return for follow-on renovation work once the first project is done.

A P Ward Building Services Ltd works mainly on older Bromley properties, handling extensions and structural alterations that period houses often require. The firm's approach suits homes needing careful integration of new work with existing brickwork and layouts.

Smiths of Bromley Ltd is a building firm working in Bromley. The firm handles general building work for local homes. Enquiries can be made through the company's website.

Thatcher Builders Ltd works across Bromley on general building projects, from extensions to renovations. Enquiries can be made through its website for those planning building work.

All Well Property Services is a builder serving Beckenham and the surrounding south-east London area. The firm takes on general building work for domestic properties, from structural alterations and extensions to repairs and refurbishment.

Loft conversions and general building work are carried out across Bromley by Pro Renovations Bromley Lofts, covering everything from structural alterations to finishing touches. Enquiries can be made via its website for those planning to extend upward rather than out.

BNS Groundwork London provides building services across London from their base in South West London. They serve clients throughout the capital with professional building solutions tailored to residential and commercial requirements.

Sutton and the surrounding area are served by MDT Fixing Group Ltd, a builders firm handling projects from extensions to renovations. Enquiries can be made through the company's website for further details on availability.

IFA Construction LTD provides building services across London from their Pimlico base. They serve clients throughout the wider London region with professional building solutions.

Home Builder London Ltd provides comprehensive building services across London. The company takes on both residential and commercial construction projects.

Nova Design & Build London Ltd is a construction and design firm operating across London. Combining architectural design with building work under one roof, the company handles projects from initial concept through to completed build. It serves clients across the capital looking for a single point of contact across both disciplines.

In Croydon and the surrounding south London area, Excel Construction operates as a general builder taking on residential building work. Enquiries can be made through its website, which sets out the kinds of projects it takes on.

EAR Rendering Solution & Insulation is a building contractor based in Beckenham, working on exterior rendering and insulation for properties across the area. The two trades are closely linked, since a new render finish is often applied over insulation to improve how a house holds heat.

AD Renovations & Construction is a London building firm covering renovation and construction work for residential properties. Projects range from refurbishments to structural alterations, with enquiries handled through its website.

SX Basement Construction London specialises in basement excavation and construction projects across the capital. Their services focus on creating additional living or commercial space through professional basement development for London property owners.