Kitchen Extensions Highgate

A kitchen extension in Highgate means adding to a period house on the edge of the Heath, on a hill where a garden can step down and trees can stand near the back wall. Highgate straddles the Camden, Haringey and Islington boundaries, so confirm which borough covers the address; the rules below are Camden's. Highgate was designated as a Conservation Area in 1968 and extended in 1978 and 1992, and whether your house is inside it sets the planning route. We build the extension, set the steel, run the drainage and glazing, and fit the kitchen in one programme.

In Highgate, 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 Highgate: 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 suits a Highgate house

The right extension in Highgate follows the house type, and the stock here is split. 16% of homes are terraced houses and 15% are semi-detached or detached, so the brief is either a narrow side return infill on a terrace or a wider rear or wraparound addition on a semi or detached house. On a terrace the side return is the space between the back addition and the neighbouring wall; filling it widens the kitchen without pushing far into the garden.

A semi or detached house in Highgate has more options, because there is a flank wall as well as the rear elevation to work from. That extra freedom brings more decisions about where the steel lands, how the new roof meets the old brickwork and whether the dining space faces the garden or the side path. We price each option from the drawings so you can compare the programme and the build sequence before the design is fixed.

Housing in Highgate

Of the 10,090 homes the valuation list records in Highgate, 47% were built before 1919, 24% between the wars and 28% since 1945; 69% are flats and 31% are houses. Since most homes here are flats, only a ground floor flat in Highgate with its own garden can extend its kitchen.

What Camden guidance asks of a rear or side extension in Highgate

Camden's Home Improvements CPG sets the tone for any Highgate kitchen extension: a rear extension should be subordinate to the house in location, form, footprint, scale, proportions, dimensions and detailing, and it should leave a reasonably sized garden. In practice that means the extension reads as an addition to the house rather than a rival to it, and its depth is judged against the plot, not only the kitchen you want.

Side extensions are treated more tightly. The guidance says they should be confined to a single storey, though a taller one could be permitted in some instances, and properties in conservation areas do not have permitted development rights for side extensions or two storey extensions. A side return infill counts as a side extension, so inside the conservation area a wraparound or side return scheme goes to a planning application, so the drawings, the heritage case and our programme need to agree from the start.

Roof lights, green roofs and light for the Highgate neighbours

The roof of a Highgate kitchen extension is seen from the windows above, so Camden guidance looks at it closely. Rooflights on a ground floor extension should sit away from the building line or be obscure glazed to avoid excessive light spillage, and Camden prefers a biodiverse green roof with a substrate depth of 100mm to a sedum blanket. We build the roof on the joists the structural engineer specifies for that load, and plan the upstands and outlet so it drains properly.

Light to the house next door matters as much as light to your kitchen. The guidance says a rear extension should comply with the 45 degree and 25 degree tests in the Amenity CPG or show BRE compliance through a daylight test. On a sloping Highgate plot those tests can decide the eaves height and the depth, so we build to the section your designer has tested rather than adjusting it on site.

Steel, drainage and trees behind older Highgate houses

Opening the back of a Highgate house means taking out a loadbearing rear wall and carrying the floors above on steel. The structural engineer we appoint sizes the beams and padstones, and we prop, cut, install and pack them in a planned sequence so the kitchen stays usable for as long as possible. Where a beam bears on a party wall, or footings are dug close to the neighbour's, the building owner serves notice under the Party Wall Act before that work starts.

Drainage usually moves too, because the new kitchen sits over the old gully or inspection chamber. Mature gardens in Highgate add a further check: if a tree needs pruning or removing for the build, Camden requires six weeks of notice before work to a tree in a conservation area with a trunk diameter over 75mm at 1.5 metres. Footings near roots may need to go deeper to the engineer's design, so the tree survey and any notice belong at the start of the timetable.

• Boiler relocation and flue changes on the enclosed rear wall
• Rear, side return and wraparound kitchen extensions
• The kitchen itself fitted under the same contract as the build

VOA Council Tax stock of properties, March 2025, for Highgate West, Highgate East and Highgate Wood. Counts rounded by the VOA.

If this is your first project in Highgate, these are worth a look: kitchen renovation in Highgate, kitchen extensions across Camden, a wraparound kitchen-diner, sign-off by building control on a kitchen extension, kitchen extensions across London and Renovating a 1930s Semi.

The GS Renovation Difference in Highgate

A kitchen extension is two jobs, a structure and a kitchen, and one firm carrying both keeps the steel, the services and the cabinet layout agreed with each other. We build the shell, bring the services into the right places for your layout, and fit the kitchen once the plaster has dried, working from one programme you can read. The firm is run by its founder, Abdelaaziz Saaid, who brings decades of hands-on building experience. You get a written quotation from your drawings and a named contact through to handover.

• One contract for the groundworks, the steel and the kitchen fit
• Itemised pricing, so you can see what every stage costs
• Kitchen layout agreed before the foundations, so the services land in the right place

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.