Kitchen Extension Cost · Tunbridge Wells

How much does a kitchen extension cost in Tunbridge Wells?

A kitchen extension is one fixed build with a kitchen sitting on top of it, and rear additions near the conservation core carry conservation-grade glazing. Calibrated to Tunbridge Wells, a typical 30 m² kitchen-diner rear runs from around £136,000 with a self-managed kitchen to £188,000 and beyond for a bespoke one — the build barely moves, and the kitchen you choose is the whole difference.

Cost your Tunbridge Wells kitchen extension See a sample report

One build, four budgets — calibrated to Tunbridge Wells

The build is fixed; the kitchen is the variable. For a representative 30 m² kitchen-diner rear in Tunbridge Wells, the project total climbs with the tier while the base underneath never moves.

Self-managed IKEA, self-fit
£8,000 – £10,000 £136,000 – £138,000

Supplied & fitted Howdens · Magnet · Benchmarx
£14,000 – £22,000 £142,000 – £150,000

Premium Local bespoke · Second Nature / Burbidge
£23,000 – £50,000 £151,000 – £178,000

Luxe & bespoke deVOL · Tom Howley · Plain English
£60,000+ £188,000+

The fixed build base — £4,255/m² · ~£128,000 on a 30 m² rear. Foundations and slab, walls and superstructure, roof, envelope and glazing, first-fix services, non-kitchen finishes, fees and contingency — and the structural knock-through, the steel and the opening between the existing house and the new room. Identical on every tier.

Figures at the BuildLens South East baseline, priced on current trade day rates and live merchant pricing (2026). Fully loaded — fees, contingency and VAT included. Totals scale with size, and firm to your own property with a report. The full tier ladder, with what each rung buys, sits on the main kitchen extension page.

The knock-through in Tunbridge Wells

Tunbridge Wells kitchen extensions carry the town's standards outward — rear additions near the conservation core are specified to match the fabric they extend, and where the sandstone runs shallow, the groundworks under the new room are priced after assessment rather than assumption.

The mechanics are the same everywhere: a wall comes out, an engineer-sized steel beam goes in to carry what it held, building control signs it off, and where the wall sits on or near a boundary, a party wall matter follows. All of it is standard, all of it is predictable from the property, and all of it is carried in the fixed build base — the tier ladder above sits on top of it, never inside it.

The full ladder, rung by rung. What each kitchen tier actually buys — and why bespoke is not the top rung — sits on the main kitchen extension page. This page is the Tunbridge Wells calibration of it.

Kitchen extension cost — the full ladder →

Common questions about kitchen extension cost in Tunbridge Wells

How much does a kitchen extension cost in Tunbridge Wells?

On a representative 30 m² kitchen-diner rear calibrated to Tunbridge Wells, the fully-loaded total runs from around £136,000 – £138,000 with a self-managed kitchen, through £142,000 – £150,000 supplied and fitted, to £151,000 – £178,000 for a premium or local-bespoke kitchen, and £188,000+ for a named bespoke maker. The build base is fixed at about £128,000; the kitchen tier sets where the total lands.

What is local about a Tunbridge Wells kitchen extension?

Two things. Near the conservation core, the rear elevation and glazing are specified to conservation grade — matched materials and joinery rather than off-the-shelf. And on plots where the sandstone runs shallow, the groundworks under the new room change. Both are standard local work once the property is assessed.

Why does the kitchen choice change the total by so much?

Because the build behind it doesn't change. The structure, roof, envelope, services and the knock-through steel cost much the same whichever kitchen goes in — so the entire spread on the same extension sits in the kitchen tier. Picturing a bespoke kitchen on a mainstream budget is where most kitchen-extension budgets come apart.