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More Space for Your London Home
Designed around your home, factory-built in Blackburn in as little as 4 weeks, and installed on-site in under one.
EazyBase in London
Why London homeowners choose modular
In London, space is the one thing money struggles to buy. Homes here command some of the highest prices per square foot in the country, and moving up a rung — with stamp duty, fees and the sheer cost of the next postcode — puts an extra room further out of reach than almost anywhere else. Which is why so many Londoners are choosing to extend the home they already love rather than leave it.
EazyBase designs and factory-builds modular home extensions in London homes' most-wanted forms: open-plan kitchens, dining rooms, home offices, playrooms and garden rooms. Your extension is precision-built in our Blackburn factory in as little as four weeks, then installed at your home in under a week — no months of scaffolding, skips and strangers in your kitchen.
From Victorian terraces with unused side returns to post-war semis with room to grow at the rear, we build for the way London homes actually are. This page is our hub for the capital — you'll also find dedicated pages for the towns and boroughs we cover across Greater London.
Local knowledge
Built for London homes

The best-value space you can buy in London
When floor space is priced the way it is in the capital, every square metre you add works harder than almost anywhere else in Britain. Moving to gain a single room means stamp duty, agent fees, removals and — usually — a bigger mortgage. A modular extension turns money you'd lose to the moving process into permanent, usable space in the home you already own. For a £20,000 to £60,000 project, many London homeowners find it's simply the most sensible way to buy room to live.

Extending a London terrace
London's Victorian and Edwardian terraces are full of borrowed space waiting to be claimed — most obviously the side return, that narrow strip beside the kitchen that catches leaves and little else. Filling it transforms a galley kitchen into a broad, light-filled kitchen-diner. Terraces bring real constraints too: shared party walls, neighbours a metre away, and rear gardens reached through the house. Factory building answers all three — the messy work happens in Blackburn, and installation is measured in days, not months of noise through the wall.

Planning permission and Article 4 in London
Permitted development rights often cover single-storey rear extensions within national size limits — but London needs more care than most places. Many boroughs apply Article 4 directions in conservation areas, which remove some permitted development rights and mean a planning application where one wouldn't otherwise be needed. Rules also differ for flats, maisonettes and listed buildings. We design with these constraints in mind from day one, and we'll always tell you to confirm the position with your borough council before any work is agreed.

Why factory-built works so well in London
London is the hardest city in Britain to run a traditional building site: narrow streets, permit parking, close neighbours and nowhere to store materials. Factory building sidesteps nearly all of it. Your extension takes shape in our Blackburn facility while your garden stays a garden, then arrives finished for an installation of under a week. We cover the whole of Greater London from this hub — see our dedicated pages for Croydon, Bromley, Kingston upon Thames, Ealing, Harrow, Barnet, Enfield and Romford.
Every London project follows our 8-step ORDER process
From discovery call to final quality check — one team, one plan, no surprises. See how it works →
What customers say
Trusted from first sketch to final fix
Fast And Reliable
Great quality… I can not believe how quickly the guys at Eazybase put the extension up… Thank you very much!
Recommended
Had an extension, doors including a skylight by EazyBase. It was completed in 7 days to a very high standard.
Good to know
London questions, answered
Ready to extend your London home?
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