Kitchen Extensions Crouch End

A kitchen extension in Crouch End starts from the terrace plan: 19% of homes here are terraced houses and 5% are semi-detached or detached, while 76% are flats. That sets the options. A terrace takes a side return infill, a rear extension or a wraparound. A ground floor flat has no householder permitted development rights for any of them, and houses inside the Crouch End conservation area, designated by Haringey in 1974, face tighter limits. We build the shell and fit the kitchen in one programme.

In Crouch End, 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 Crouch End: 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.

Which kitchen extension a Crouch End house can take

The form of a Crouch End kitchen extension follows the plan of the house. Where a Victorian terrace has a narrow back addition with a side return passage beside it, the choice is an infill of that passage, a rear extension across the back, or a wraparound that does both. With 19% of homes here terraced and 5% semi-detached or detached, the terrace plan is where the design conversation begins. Inside a Haringey conservation area any extension at the side of a house needs planning permission, which catches side return infills and wraparounds, so those drawings need a decision before the steel and glazing are ordered.

Outside conservation areas and listed buildings, Haringey says a single-storey rear extension may be built without planning permission to 3m to 6m on a semi-detached or terraced house, or 4m to 8m on a detached house. The upper end of each range sits under the national prior approval route and does not apply on designated land. For you that means a rear-only extension on a street outside a conservation area can often go ahead without an application, while a wraparound is generally outside permitted development anywhere. The depth your designer picks decides which route the paperwork follows and how early the programme can start.

Housing in Crouch End

Crouch End has about 10,270 homes on the Council Tax list: 66% pre-1919, 4% interwar and 30% post-war, with flats making up 76% and houses 24%. Most homes here are flats, and only a ground floor flat in Crouch End with its own garden can extend its kitchen.

Building inside the Crouch End conservation area

Haringey designated the Crouch End conservation area on 25 October 1974 and publishes a character appraisal for it. The appraisal says careful thought should go into rear extensions where there are views across rear elevations from nearby streets. That matters on corner plots and where a gap between houses opens the backs to the road. In practice the brick, the roof line and the proportion of the glazing are the things a planning officer can see, so we price them from the approved drawings and source matching stock brick before the walls go up.

In a Haringey conservation area a single-storey extension that goes more than 3 metres beyond the back wall of a house, or 4 metres for a detached house, needs planning permission. A Crouch End kitchen plan that wants more depth than that needs an application, which the owner or their designer makes, and we build to the consent. Haringey also has four Article 4 directions within conservation areas that remove rights such as window and door alterations, so ask your designer to check whether one covers your street before the back doors are specified.

Drains, steel and sign-off on a Crouch End extension

On a Crouch End terrace the drains can fix the footprint of a kitchen extension before the kitchen layout does. Haringey building control says that where development is within 3 metres of a public sewer, build over permission from Thames Water is needed before work starts. Behind a terrace a shared sewer can run across the back gardens, so we have the run traced and surveyed at the start, and the build over agreement goes into the programme as a dependency rather than a surprise at dig day. The new sink and appliance positions then set the falls for the fresh drainage inside the extension.

Opening the back wall means steel. The structural engineer we appoint sizes the beam and padstones from the load above, and we fit it under temporary props. For approval, Haringey offers a full plans application or a building notice, though national rules do not allow a building notice for work within 3 metres of a public sewer. Haringey must grant or reject full plans within 5 weeks unless you agree a longer period. For applications made after 1 October 2023 you must also send a completion notice before the final inspection, so we keep the certificates for the glazing, electrics and drainage together for that visit.

Roof glazing, garden depth and the kitchen fit in Crouch End

In a Crouch End side return infill the roof glazing carries the daylight, because the infill closes off the window that lit the middle room. Roof glazing over the infill, or a run of roof lights in a flat roof, brings that light back. Under permitted development a single-storey rear extension cannot exceed four metres in height, and the eaves close to a boundary are held lower still, which sets the roof pitch and the fall to the gutter against the party wall. We detail the upstand, the flashing to the party wall and the trickle ventilation early, since those decide how the glass sits and how the room handles condensation from cooking.

For bigger rear extensions Haringey considers whether the design avoids reducing the garden to an unreasonably small size, among other tests. On a narrow terrace plot every metre of depth is weighed against what is left outside. Once the shell is dry we run first fix plumbing and electrics, plaster, lay the floor and set the units, then template the worktop from the fitted carcasses. Running the kitchen in the same programme removes the gap between a builder leaving and a fitter arriving, and one team owns the finish.

• Party wall process explained, with drawings for your notices
• Wet underfloor heating laid in the new screed
• Island units with power and waste run through the slab

VOA Council Tax stock of properties, March 2025, for Crouch End West, Crouch End East and Hornsey Vale. Counts rounded by the VOA.

For the wider picture around kitchen extensions in Crouch End, see kitchen renovation in Crouch End, kitchen extensions across Haringey, a side return kitchen infill, how building control inspects an extension, our London kitchen extensions page and Utility Rooms and Their Cost.

Why Choose GS Renovation in Crouch End

We run the whole job, from the structure to the last cupboard handle, on one programme with one site contact. Our founder has more than thirty years of hands-on building experience. The owner or their designer holds the drawings and the consent, the structural engineer we appoint sizes the steel, a registered electrician certifies the electrics, and a registered gas engineer does any gas work. You get a written quotation after a site visit, and the build follows the approved drawings in the order they need.

• Rooflights set out against the engineer's steel layout
• Building control and Part P certificates handed over together at the end
• Fully insured, with cover in place on every site

Reviewed jobs near Crouch End

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

• New Kitchen Assembly & Others for Interior Designer, Hornsey, 5 Jan 2022 (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.