The 9 Best Home Renovation Builders in London

LINX Design And Build suits homeowners who want design, planning and construction handled by one firm with its own workforce. Its architecture team prepares drawings, structural calculations and building regulations packages before the build starts. The firm takes on extensions, loft conversions, full house renovations and basement and garage conversions. Projects come with a fixed-price quote, a dedicated project manager and weekly updates. A 10-year structural guarantee and a 24-month maintenance period follow completion.

AD House Construction fits north London homeowners who want design, planning and building handled by one firm. The Winchmore Hill company takes on house extensions, loft conversions, refurbishments, basements, roofing and new builds. Its named team includes a managing director as client lead, a construction manager and a site manager. Project management is dedicated, from design and planning through to construction. Work covers Enfield, Barnet, Camden and the rest of north London, as well as Hertfordshire.

AXE Construction suits south-west London households planning a loft conversion or extension who want one team from design to finish. The Streatham firm handles dormer, hip-to-gable, mansard and Velux lofts, house extensions, basement conversions and full renovations. It states that projects are run end to end by its own team, without subcontractors. Each job gets a dedicated project manager, regular updates and a fixed programme. Architectural design is offered in-house, which shortens the path from drawings to site.

Building Vision London suits owners of period and listed homes in central and south-west London. The firm has worked since 2009 on extensions, loft and basement conversions, full refurbishments and repairs to Grade I and II listed buildings. It is a member of the Federation of Master Builders. Its electricians, plumbers and heating engineers are qualified to City & Guilds Level 3, and the firm is Gas Safe registered. A maintenance service covers smaller jobs once the main project is finished.

Standley Design & Build suits south-west London homeowners who want the owner involved in their project. Jon Standley is the main point of contact and oversees the work. The firm handles home extensions, loft conversions, renovations, flat conversions and new builds, and prepares the architectural drawings itself. It keeps an in-house team on every site rather than relying on changing crews. Structural works and installations carry a workmanship warranty.

Design & Build London suits homeowners who want planning, engineering and construction managed under one roof. The Fulham firm handles loft conversions, house extensions and the renovation of existing spaces, with architectural design as part of the service. It also installs windows, makes bespoke carpentry and lays fibreglass roofs. Planning, building regulations, permissions and engineering are coordinated by the same team. Its company and VAT numbers are published, which makes the firm easy to check before signing.

LCCL Construction suits homeowners who want the same team to draw and build their loft or extension. Founded in 2004 and based in Finchley, it handles dormer, hip-to-gable and mansard lofts, rear and side-return extensions, basements and full renovations. Design, planning, structural calculations and party wall work are done in-house. One project manager stays from first sketch to handover and sends a written progress update every week. Finished work carries a 10-year LABC structural warranty.

Home Republic is worth a look for substantial projects such as basements, restorations and new builds as well as extensions. The Croydon contractor works on a design-and-build basis, with construction managers, architects and engineers in its network. It offers a 12-month defect liability period and a 10-year in-house structural guarantee. Quantity surveying and cost planning are available, which helps keep a large budget under control. The firm also handles commercial work, from hotels to offices.

Good Design & Build suits homeowners who want to commit to design first and decide on the build later. The firm offers separate design and build contracts, so you can pause after planning if the budget changes. Its team includes architects, structural engineers and builders. Work covers kitchen, side-return, rear and wraparound extensions, loft and basement conversions, refurbishments and garden rooms. An insurance-backed warranty is offered on its building work.