Best Time of Year for a House Extension in London

Planning a house extension in London? Timing can affect both the build process and your experience as a homeowner.

Spring & Summer (April-September)

Longer daylight hours and generally drier weather make this the busiest period for extensions. Groundworks and external work are easier. However, demand is high, so book early.

Autumn (October-November)

Still a good window for starting projects. The weather is usually manageable, and you may find more availability with contractors.

Winter (December-February)

Shorter days and rain can slow external work, but interior work continues. Starting in winter means your extension could be ready by spring.

Our advice: start planning and get quotes 2-3 months before you want work to begin. We work year-round across Westminster, Kensington & Chelsea, Lambeth, Southwark, Wandsworth, and City of London. Contact us for a free site visit and quote.