Single and Double Storey House Extensions in London

For homeowners in London weighing up moving versus improving, a house extension is often the more sensible investment. A well-built extension is one of the most dependable ways to increase a property's resale value while giving you the extra space now, and Crest Building Services builds every one of ours to last.

London sits within our core Greater London coverage, close to Lime Street and Luxted, all reachable from our Bexleyheath base within roughly a ten mile radius.

What House Extensions in London Involves

We coordinate building regulations approval as part of the project and work with structural engineers where calculations are needed, such as steel beam specifications for opened-up spans. This is managed alongside the build so you are not left organising separate professionals yourself, and the finished extension is fully compliant rather than a job that struggles under scrutiny when you come to sell.

The process starts with a site visit to discuss your goals, budget and the practical constraints of your plot. From there we help develop workable designs and advise on planning permission and building regulations before any work begins. Once the plan is agreed, Wayne leads the groundworks and structural brickwork, with vetted subcontractors brought in for plumbing, electrics and finishing, and a final walk-through confirms every detail before handover.

Crest Building Services is founder-led, locally based and honest about what your plot can and cannot take. Every image on our site is a genuine job we have completed, not a stock photo or render. To get started on your extension in London, request a quote through our contact form or call us directly on 07495 434230 to arrange a site visit.