Single and double storey extensions in Angel. Trusted, professional, 30+ years' hands-on experience.
GS Renovation designs and builds house extensions throughout Angel and N1, adding space to Georgian and Regency townhouses and converted period homes near Upper Street and Highbury Fields. With more than 30 years in Islington, we handle groundworks, steelwork, roofing and fit-out, and guide you through planning and party wall matters from the outset.

The classic Angel extension takes in the narrow side return of a period terrace, widening the ground floor to create a bright kitchen-diner opening onto the garden. We dig and lay foundations to suit the ground and any nearby trees, install steel beams where the rear wall is opened up, and build the new roof and glazing. Every stage is inspected under building regulations so the finished structure is certified.
Whether your project is permitted development or needs a full planning application depends on the property. Many N1 homes sit within Islington conservation areas or are listed, which restricts permitted development rights, so an application to Islington Council is often required. We assess your specific address early, advise honestly on the route, and coordinate party wall notices with neighbours whose boundary the works affect.
Tall Georgian and Regency townhouses in Angel lend themselves to considered rear extensions over one or two storeys, adding a larger kitchen below and a bedroom or bathroom above. We match brickwork, detailing and proportions to the age of the house so the addition sits comfortably with the original, which matters greatly in Islington's conservation streets where the council scrutinises how changes read from front and rear.
The build brings together foundations, structural steel, a weathertight roof and a full internal fit-out, all sequenced by one team so trades do not clash. We manage the building control inspections at each key stage, from foundations to insulation and drainage, and handle the party wall process where the extension is built up to or astride a shared boundary with your Angel neighbours.
Angel homeowners choose GS Renovation because extending a period or listed N1 home needs a builder who understands both the structure and Islington's planning reality. We advise early on permitted development versus a planning application, manage groundworks, steel and roofing, coordinate party walls, and deliver a fully certified extension. Thirty years locally backs every project.
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
Every Angel project is priced on its own merits, as the cost of house extensions varies with the size, specification and condition of the home. We give a clear, itemised quote up front with no obligation. Call 07472 424 226 for an estimate tailored to your property. 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 Angel 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 Angel. You get one accountable team, transparent pricing, fully insured tradespeople and genuine aftercare on every project.
Many single-storey rear extensions in Angel 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 Angel'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.
It depends on the property. Many Angel homes fall within Islington conservation areas or are listed, which reduces or removes permitted development rights, so a planning application to Islington Council is often needed. Straightforward rear extensions on unlisted homes can sometimes proceed under permitted development. We check your exact address first and advise on the correct route before any work starts.
We do. GS Renovation covers all of Angel and the N1 area and the wider North London. Call 07472 424 226 and we will confirm we work on your road.
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 Angel. 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 Angel and the surrounding areas. Explore a nearby location:
Contact GS Renovation today for a free, no-obligation quote for house extensions in Angel.
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