Single and double storey extensions in Bloomsbury. Trusted, professional, 30+ years' hands-on experience.
Extending a home in Bloomsbury means working within one of London's most protected settings, where Georgian and Regency townhouses in WC1 sit inside Camden's conservation areas. GS Renovation has built extensions across North London for over 30 years, handling foundations, steelwork, roofs and fit-out while navigating the planning and party wall demands these period properties bring.

The most common extension in Bloomsbury opens up the rear of a townhouse at lower-ground or garden level, sometimes infilling a narrow side return to widen a cramped kitchen. Plots here are generous by London standards in the garden squares but often tight behind terraces. We dig and lay foundations to suit the ground and neighbouring structures, install the steel beams the opening needs, and tie the new roof and walls into the existing period fabric.
Because so much of WC1 is listed or within a conservation area, an extension here is far more likely to need a full planning application to Camden Council than to fall under permitted development, and a listed property will need listed building consent as well. We advise honestly on which route applies before you commit, and where neighbours are affected we serve party wall notices, since excavation near a shared wall almost always triggers the Act.
Where the ground floor cannot grow, Bloomsbury owners often look upward, adding a storey or converting the roof of a townhouse into extra bedrooms. In a conservation area the roof line matters enormously, so any dormer or mansard is designed to sit sympathetically within the terrace and to satisfy Camden's planners. We handle the structural upgrades floors and steels need to carry the new load, along with insulation, escape and fire requirements under building regulations.
For owners of leasehold flats in Bloomsbury's mansion blocks, structural extension is usually limited, but reconfiguring space and improving the layout is often possible with the freeholder's licence to alter and the managing agent's agreement. Whichever type of property you own, we manage the whole extension as one project, from the first drawings and applications through groundworks, superstructure and roofing to a complete internal fit-out, so you deal with a single team throughout.
Homeowners across WC1 choose GS Renovation because extending a Bloomsbury period home demands both building skill and a steady hand with Camden's planners and party wall matters. With 30+ years behind us, we join foundations, steel, roof and fit-out into one accountable project, keep the work tidy in an occupied home, and deliver space that respects the building's character.
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great attention to detail. I've already recommended him to others.
Splendid job on our new kitchen refurb, including new flooring, moving the services, installing RSJ and preparing space for new back doors… George was always friendly, communicative and has an excellent attention to detail, ensuring everything is finished to a high standard.
Giorgio is an excellent and intelligent workman, and with very reasonable prices!… He paid a lot of attention to detail that is not common at all, and the final result was immaculate. Highly recommended!
FAQ
Pricing house extensions in Bloomsbury comes down to the size of the job, the specification you choose and the condition of the property. Rather than guess, we survey and give you a fixed, itemised quote you can rely on. Call 07472 424 226. As a rough guide, house extensions in London typically starts from roughly £40,000 for a single-storey rear extension and rises with size and specification (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
We will give you an honest timescale for house extensions in Bloomsbury after surveying your home. Most projects run on a clear weekly programme, and we tell you up front about any lead times on materials or approvals.
With more than three decades of hands-on trade experience behind us, GS Renovation is a trusted choice for house extensions in Bloomsbury. You get one accountable team, transparent pricing, fully insured tradespeople and genuine aftercare on every project.
Many single-storey rear extensions in Bloomsbury fall under permitted development, but side returns, double-storey extensions and work in conservation areas usually need full planning permission. We assess your property and manage both the planning application and building control.
Yes. A large share of Bloomsbury's homes are period, Georgian and listed properties, and we renovate them regularly. We plan each house extensions around their particular characteristics, such as conservation and listed-building rules, solid walls and original period features, so the result suits the building and meets building control.
In much of Bloomsbury the answer leans towards planning permission, because the area's conservation status and the number of listed buildings restrict permitted development rights that apply elsewhere. A listed home also needs listed building consent. We assess your specific property against Camden's rules early, so you know the likely route before spending on detailed design, and we handle the application either way.
Absolutely. Our team works right across Bloomsbury and the WC1 area and neighbouring parts of North London. Get in touch on 07472 424 226 to check coverage for your address.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Bloomsbury. Explore what else we do locally:
Steel beam installation, RSJ and structural alterations.
Safe load-bearing wall removal with steel beam support.
Structural alterations, new openings and steel support.
Chimney breast removal with gallows bracket or beam support.
Open-plan kitchen, diner and living conversions.
Full refurbishments and whole-house renovations.
Bespoke kitchen design and installation.
Luxury bathroom and wet-room refurbishment.
Same Service, Nearby Areas
We carry out house extensions across Bloomsbury and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Bloomsbury.
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