Belsize Park · NW3 · Kitchen Extension

Kitchen Extension
in Belsize Park, NW3

Updated 14 July 2026

London service guide: Kitchen extensions.

Architects, Engineers, Surveyors & Builders Under One Roof.

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One Studio. One Contract. One Team.

We deliver Belsize Park kitchen extension with kitchen designers, structural engineers and builders under one fixed-price contract - layout design, services, procurement, installation, finishes, Building Control coordination and handover through one accountable team.

£10M insurance · RIBA architectural team · Belsize Park specialists
In-house RIBA Chartered Architects · £10M insurance · RICS surveying support

Kitchen Extension in Belsize Park: What You Need to Know

Every kitchen extension project in Belsize Park is designed to respect the Belsize Conservation Area and the character of Victorian villas, Italianate stucco terraces, and mansion flats. Our in-house RIBA architects handle Camden planning applications, our chartered structural engineers specify any load-bearing work, and our directly-employed trades deliver the build under one fixed-price contract. We coordinate Building Control, Party Wall awards where needed, and all certifications through to handover.

Many kitchen extensions in Belsize Park involve removing internal walls (requiring structural engineering), extending into side returns or rear gardens, and creating open-plan living spaces. Our in-house kitchen designers, architects and engineers work together from day one.

Elegant residential neighbourhood between Hampstead and Primrose Hill. Part of the Belsize conservation area with substantial Victorian villas and tree-lined avenues.

Designed Around the Kitchen

A kitchen extension succeeds or fails on decisions that have nothing to do with brickwork: where the island sits, how far the cook stands from the table, whether morning light reaches the worktop. So we begin with the kitchen brief and let the architecture serve it — the drainage run for an island sink, the ducting route for extraction and the rooflight positions are all fixed on the drawings before any structural design starts. These are the calls we resolve first.

How We Run Your Project

Six stages, kitchen decisions first, so nothing gets value-engineered mid-build.

  1. Kitchen brief — how you cook, shop, eat and entertain, recorded before anyone sketches a wall.
  2. Layout studies — alternative plans tested against the brief until the strongest arrangement wins on evidence.
  3. Technical design & consents — cabinetry, services and structure coordinated on one set of drawings while the paperwork progresses.
  4. Single itemised price — building work, kitchen installation and services committed in one document before we start.
  5. Shell to weathertight — the new structure built and sealed, with service routes cast in exactly where the kitchen plan needs them.
  6. Installation & commissioning — cabinetry, appliances, stone and lighting fitted, tested and handed over snag-free.

Most kitchen extension builds run 10–16 weeks once on site. Read the full kitchen extension guide for layout options, glazing choices and programme detail.

The regulatory load on a kitchen extension is heavily service-driven: new cooking extraction must discharge correctly under the ventilation rules, relocated sinks need compliant drainage falls, kitchen circuits are notifiable electrical work, and large glazed openings must satisfy energy standards — all inspected and certified through building control, which we manage. The planning route itself depends on your street: consented, permitted development or conservation-area constrained. Check your borough’s position in our planning guide library.

Why Hampstead Renovations

A kitchen extension is really two projects — a build and a kitchen — and most go wrong where they meet. Ours are drawn by our in-house RIBA Chartered Architects with the cabinetry, structure and services on the same drawings, priced fixed on JCT terms, and built by teams we bring back project after project. RICS surveying support is available through our sister company where party wall or condition questions arise. Every contract carries £10M public liability cover, a 12-month defects period and a 10-year workmanship warranty. Call before 2pm on a weekday for a same-day response.

Kitchen Extension in Belsize Park: Questions

How much does kitchen extension cost in Belsize Park, NW3?

Kitchen Extension in Belsize Park typically costs £15,000–£45,000. The final price depends on the scope, specification and complexity of the project. We provide a detailed fixed-price quotation after the initial consultation and design phase.

Do I need planning permission for kitchen extension in Belsize Park?

In Belsize Park's conservation area, many external alterations require Camden planning permission. Our planning team has extensive experience securing approvals in Camden.

How long does kitchen extension take in Belsize Park?

Kitchen Extension projects in Belsize Park typically take 6-10 weeks. Including design and any planning approvals, the total programme depends on project complexity. We provide a detailed timeline at the consultation stage.

Why choose Hampstead Renovations for kitchen extension in Belsize Park?

We're specialists in large victorian villas (many converted to flats), edwardian semis, period terraces and mansion blocks, with extensive experience in Belsize Park and across Camden. Our in-house team of RIBA architects, structural engineers and build crews delivers every project under one fixed-price contract — from design through to completion.

Guides & Local Reading

Browse all guides Kitchen Extension Belsize Park NW3 House Extension Belsize Park NW3 Planning Permission for Extension Belsize Park NW3

Kitchen Extension in Nearby Areas

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