Kitchen Extensions Southall

A kitchen extension in Southall is often a terrace job. The VOA list puts 51% of homes here in terraced houses and only 12% semi-detached or detached, so the usual brief is a narrow back addition, a long galley kitchen and party walls with the neighbours on one or both sides. On those plots we plan the new room around the party walls, the drain run under the yard and the steel that opens the old back room into the new one, and we fit the kitchen inside the same programme.

In Southall, a rear kitchen extension of about 30 square metres typically costs £45,000 to £97,500 excluding VAT, or £60,000 to £100,000 for a side return (indicative London ranges, Resi, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Southall: the structural engineer we appoint designs the foundations and steel, we build the room and fit the kitchen, and a registered electrician certifies the electrics.

What size of rear kitchen a Southall terrace can take

On a Southall terrace the starting point is a single-storey rear room that stays inside national permitted development. For any house that is not detached, that means three metres beyond the original rear wall and no more than four metres high. Ealing's own SPD 4 is close to that: it says a rear extension of 3 metres deep and 3 metres high will be acceptable in most cases. Measure from the original back wall, not from an earlier lean-to or conservatory.

If you want a longer kitchen, the prior approval route can raise the limit to six metres for a house that is not detached, provided the plot sits outside Article 2(3) designated land. Neighbours are notified under that route, and on a terrace both of them sit right against the new walls. Where a planning application is needed, SPD 4 says a deeper extension may be allowed where the house is detached or well separated from its neighbour. A mid terrace is neither, so a deep scheme needs careful drawings.

Housing in Southall

Southall counts roughly 14,510 homes for Council Tax; 30% are older than 1919, 47% interwar and 23% post-war, with 36% flats and 64% houses. A terrace kitchen extension in Southall starts in a narrow side return, and 51% of homes here are terraced.

Semis, flats and the Norwood Green edge of Southall

Southall also has some 1930s semis, and a semi usually has a side passage as well as a rear garden, which opens up an L-shaped kitchen. A flat is different. Householder permitted development applies to houses only, not to flats and maisonettes, so a ground floor flat owner needs a full planning application for any kitchen extension, and normally the freeholder's consent under the lease. We build to the approved drawings once those are in place.

On the southern edge of Southall, Norwood Green Conservation Area was first designated in 1969. Inside it, permitted development rights are restricted, and every side extension needs householder planning permission. Ealing's SPD 4 says rear extensions there should not run across the full width of the original house, and wraparound side and rear schemes are discouraged and usually refused. That shapes the kitchen plan: a part-width rear room with the side passage kept open.

Sewers, building control and inspection days in Southall

Before we price a Southall kitchen extension we find where the drains run. Terraces often share a combined drain along the backs of the gardens, and it can count as a public sewer. Ealing will not accept a building notice where an extension, erection or underpinning is over or within 3.0m of a public sewer. Then the job goes either as a full plan application to Ealing or through a registered building control approver, and a build over agreement with Thames Water is usually needed. Both take time before the start date.

Where Ealing is the building control body, it plans its visits to a single-storey extension from commencement and excavations, then DPC, floor damp-proof membranes and floor insulation. Since 1 February 2026 its site inspections have run on Monday, Wednesday and Friday. We book the foundation and slab stages around those days, so concrete is not poured before the inspector has seen the trench. On a Southall terrace with rear access only through the house, that timing matters.

Steel, glazing and the fitted kitchen in one Southall programme

The new kitchen only works if the old back wall comes out, and that opening needs a beam. The structural engineer we appoint sizes it, and on a terrace the padstones bear onto party walls that belong partly to the neighbours. That is notifiable work under the Party Wall etc. Act, and so is digging foundations close to next door. The building owner serves those notices before the work starts. We prop, cut the opening and set the steel in one short phase so the house above stays supported.

Light comes from the roof and the rear, not the sides. SPD 4 advises keeping windows out of the side wall of an extension and placing them in the front and rear walls, which suits a terrace where the side wall is on the boundary. Roof lights over the worktop and doors across the garden end are the usual answer. The units, worktop, tiling and appliances then follow straight on from plastering in Southall, with no gap between trades.

• Steel beams and goalpost frames into the existing house
• Island units with power and waste run through the slab
• The kitchen itself fitted under the same contract as the build

VOA Council Tax stock of properties, March 2025, for all 5 statistical areas in Southall. Counts rounded by the VOA.

Alongside kitchen extensions in Southall, the pages that usually help next are kitchen renovation in Southall, kitchen extensions across Ealing, fitting the kitchen itself, how building control inspects an extension, how we handle kitchen extensions across London and Extend or Move?.

Why Southall Homeowners Choose GS Renovation

We run a Southall kitchen extension as one contract from the first excavation to the last cabinet handle. You deal with one team for the foundations, the steel, the roof, the glazing and the kitchen fit-out, so no trade waits on another firm. We book building control visits against the stage plan, keep the drawings on site and give you a written programme before work starts. Our founder brings over thirty years of hands-on building to how each stage is sequenced.

• Founder with 30+ years of hands-on experience
• Screed left to dry before the kitchen floor finish goes down
• Cooker extract taken outside through the new roof or flank wall, not recirculated

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.