House Extensions Stoke Newington

GS Renovation plans and builds extensions across Stoke Newington, adapting the bay-fronted Victorian and Edwardian terraces around Clissold Park for modern family living. We handle foundations, steelwork, roofing and full fit-out as one managed project.

In Stoke Newington, a single-storey rear extension typically starts from £40,000, or £2,000 to £2,800 per m² (indicative London ranges, Architecture for London, Resi, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Stoke Newington: the structural engineer we appoint designs the structure, we build it, and building control signs it off.

Side-return and kitchen extensions in Stoke Newington

The classic extension to a Stoke Newington terraced house fills in the side return, that narrow strip beside the rear closet wing, and pushes back into the garden to create a wide open-plan kitchen-diner. These N16 terraces were built with that awkward L-shaped rear, so a kitchen extension that infills it turns a dark galley kitchen into a bright, sociable space, usually with a steel beam carrying the original wall above and rooflights bringing light deep into the plan. In the many houses now split into flats, a kitchen extension belongs to the ground floor flat and needs a planning application and the freeholder's consent.

We start with the groundworks, digging and pouring foundations that account for nearby trees and the clay subsoil common across Hackney. Then comes the structural steel, the brickwork or timber frame, the roof and the glazing, followed by a full fit-out of plumbing, electrics, plastering and decoration. One team runs it from the first dig to the final coat of paint.

Housing in Stoke Newington

Stoke Newington counts roughly 12,540 homes for Council Tax; 68% are older than 1919, 1% interwar and 31% post-war, with 74% flats and 26% houses. Where most homes are flats, a flat in Stoke Newington has no householder permitted development rights, so extending one needs planning permission and the freeholder's consent.

Two neighbours and the 45 degree line in Stoke Newington

Hackney's draft residential extensions and alterations SPD applies a 45 degree rule: an extension should not exceed a line taken at that angle from the centre of the nearest ground floor habitable room window of an adjoining building. In Stoke Newington, where 25% of homes are terraced houses, an extension to a mid terrace house has a neighbour on each side. That gives two lines, one per neighbour, and the tighter of the two sets the depth on that side of the plot. A scheme drawn against only one neighbour can fail on the other.

Each line starts at a window, so its position has to be known exactly. On a Stoke Newington terrace the nearest ground floor habitable room window next door may be in the neighbour's main rear wall or in their closet wing, and the two give very different lines. We survey both neighbouring rear elevations before any design, from your garden where possible. The SPD came into effect in January 2026, and since the 45 degree test is quoted from the draft, the designer checks it against the adopted text before drawing. The test applies where planning permission is needed; a single storey rear extension to a house within permitted development limits usually needs none, even in a conservation area.

Planning and party walls in N16

Many single-storey rear and side-return extensions to Stoke Newington houses fall under permitted development, but not all do. The Stoke Newington conservation area, designated in 1983, runs from Clissold Park along Church Street into much of the High Street, and there side extensions, two-storey additions and roof extensions need a full planning application to Hackney Council; some Hackney conservation areas also carry Article 4 directions that remove more. Flats have no permitted development at all. Hackney's residential extensions and alterations SPD has applied since January 2026, and its draft set 3 metres as the depth for a single storey rear extension to a terrace and asked that half the original garden be kept. We assess your property early, tell you honestly which route applies, and coordinate the drawings and application with your architect or designer.

Structural work within the extension is a building regulations matter, so building control inspects the foundations, the steel and the weatherproofing regardless of the planning route. Because these terraces share walls, extending near or against a boundary usually triggers the Party Wall Act, so you serve notice on the neighbours in good time as building owner; we give you the drawings and programme it needs and build to any award. Getting planning, building regs and party wall matters lined up from the outset keeps the build moving.

Double storey extensions in Stoke Newington

Under permitted development a two-storey rear extension can go no more than 3 metres beyond the original rear wall and must stay at least 7 metres from the rear boundary, and in a conservation area it is not permitted development at all. Many gardens are too short for the 7 metre rule, so a double storey extension in Stoke Newington often needs planning permission from Hackney Council. It is a job for the 26% of homes that are houses; a flat cannot add a storey this way. Stoke Newington conservation area was designated in 1983 and runs from the Clissold Park conservation area along Church Street to include substantial parts of the High Street (council source). Our double storey extension page explains the build, at £1,800 to £2,600 per m² across both floors.

• Flat and pitched roofs with rooflights or lanterns
• Trial holes to set foundation depth near drains and trees
• Single and double storey extensions

VOA Council Tax stock of properties, March 2025, for Stoke Newington East & Cazenove, Stoke Newington North and Stoke Newington South. Counts rounded by the VOA.

Useful next reading for a house extensions project in Stoke Newington: RSJ and steel beam installation in Stoke Newington, house extensions across Hackney, double storey extensions, the Party Wall Act process for extensions, house extensions anywhere in London and Bifold vs Sliding Doors.

Why Choose GS Renovation in Stoke Newington

Stoke Newington homeowners choose GS Renovation because we manage the whole extension under one roof, from foundations and steel to the finished kitchen. We know how N16 terraces and their side returns behave, we are straight about planning versus permitted development, and our founder's 30+ years on the tools means tidy, dependable work in an occupied home.

• One point of contact on the phone, not a call centre
• Permitted development checked before you pay for a planning application
• Foundation depth set after trial holes, drains and trees are checked

Reviewed jobs near Stoke Newington

1 MyBuilder review from Stoke Newington, with each customer's own job title:

• Install new dishwasher, Stoke Newington, 24 May 2021 (5 out of 5)

Read all 31 on our reviews page.

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.