Find Trusted Builders in West London

West London builders handle everything from loft conversions in Acton to basement digs in Chelsea, rear extensions in Chiswick to full refurbishments in Notting Hill. The area's mix of period properties and modern developments means builders need skills across traditional and contemporary construction methods. It is also one of the most expensive parts of London to build in, with land values making extensions and conversions financially worthwhile despite higher construction costs.

Building services in West London

General builders in this area typically offer house extensions (single and double storey), loft conversions, garage conversions, internal reconfiguration and knock-throughs, new build projects, structural alterations, underpinning and basement work, and general refurbishment. Many work alongside architects, structural engineers, and specialist subcontractors to deliver larger projects.

Building costs in West London

Construction costs in West London are among the highest in the UK. A single-storey rear extension costs between £1,800 and £2,800 per square metre, depending on specification. Loft conversions run from £40,000 to £70,000 for a dormer, and £60,000 to £100,000 for a mansard (where permitted). Basement conversions, popular in areas like Fulham and Kensington, start at £3,000 per square metre and can exceed £5,000 per square metre for full iceberg basements. These figures include build costs but not professional fees, planning, or building control.

Planning and building regulations

Most rear extensions up to 3 metres (6 metres for detached houses) fall under permitted development and do not need planning permission. Loft conversions with rear dormers are usually permitted development too, though front dormers almost always need a planning application. Conservation areas (common across many West London boroughs) impose additional restrictions. Building regulations approval is required for all structural work regardless of planning status.

Choosing a builder in West London

Get three written quotes with detailed breakdowns. Check public liability insurance and employer's liability if they have staff. Ask for references and visit a current or recently completed site if possible. Membership of the Federation of Master Builders or similar trade body provides some reassurance, though it is not a guarantee of quality. The best indicator is word of mouth from people who have used them on similar projects.

Browse the West London builders listed below for your project.