Local Builders

Builders in London

Expert building and renovation services in London and surrounding areas.

✍️ Written by James Doherty, FMBA-registered builder with 18 years in UK residential construction & extensions. Last updated: March 2026.

Building Services in London

Doherty Builders provides professional building services throughout London. Whether you need a house extension, bathroom renovation, or loft conversion, our experienced team delivers quality workmanship.

House Extensions

Create extra space with a professionally designed extension in London.

From £30,000 →

Kitchen Extensions

Transform your London home with a stunning open-plan kitchen extension.

From £25,000 →

Bathroom Renovations

Luxury bathroom transformations across London.

From £3,000 →

Loft Conversions

Maximize your London property with a converted loft.

From £30,000 →

Common Questions

Details regarding our process, planning constraints, and project timelines.

Many single-storey extensions and loft conversions fall under Permitted Development rights. However, larger extensions, properties in conservation areas, or flats will require full planning permission. We assist with architectural drawings and planning applications as part of our comprehensive service.
A standard single-storey rear extension typically takes 10-14 weeks from breaking ground to final handover. Complex double-storey extensions or projects requiring significant structural steelwork may take 16-24 weeks. We provide a detailed timeline prior to contract signing.
Yes. We carry comprehensive public liability and employer's liability insurance. All structural work is guaranteed, and we work alongside independent Building Control inspectors to ensure all work meets or exceeds UK Building Regulations.
We use a transparent, staged payment structure. Payments are tied to specific, verifiable project milestones (e.g., groundworks complete, steel installed, watertight). You only pay for work that has been completed and signed off.

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Planning a garage conversion? See our detailed garage conversion cost guide with 2026 prices, planning requirements, and what to expect at each stage.