What does a typical Ealing side-return kitchen extension cost in 2026?

For a well-specified single-storey side-return of around 15–20m² on a W5 or W13 terrace, our clients typically budget £85,000–£145,000 depending on the finish level, glazing (bifolds, sliders or Crittall), whether the kitchen is bespoke, and whether structural changes go beyond a rear steel goalpost. We give you a fixed-price contract before commit-and-build.

How long will an Ealing extension take from planning to handover?

Allow 8–12 weeks for design and planning approval, then 12–16 weeks for a single-storey side-return build. Whole-home renovations combined with an extension typically run 20–28 weeks depending on scope. We publish a firm programme before signing the contract.

Do you work on Brentham Garden Estate or other Ealing conservation areas?

Yes — we've delivered projects in and around Brentham and in the Ealing Green conservation area. We are careful with material specification (matching brick, timber joinery, roofing detail) and used to the tighter planning review Ealing Council applies to conservation-area work.

Will your site be considerate to my family and my neighbours?

Absolutely — this is one of the reasons Ealing homeowners choose us. Predictable hours, tidy sites, protective floor and stair coverings inside the home, dust barriers, and weekly walk-throughs so nothing takes you by surprise.

Ealing residential street — Prime Build Design

Family Home Specialists · W5 / W13

Builders in
Ealing.

Ealing has quietly become one of West London's most sought-after family postcodes — and its housing stock reflects it. From Edwardian semis around Pitshanger and Northfields to the tree-lined terraces of West Ealing and the protected Arts-and-Crafts homes of Brentham Garden Estate, this is a corner of London that rewards a builder who understands both period detail and modern family living. At Prime Build Design we've spent a decade delivering side-return extensions, loft conversions and full refurbishments across the borough, and we bring the same measured, family-sensitive craft to every W5 and W13 project we take on.

Request a free consultation Call 07481 626 260

Section · 01

A borough shaped by its family homes

The heart of Ealing's appeal is its housing: solid, generous Edwardian and early-Victorian houses on wide roads, often with the side-return footprints that lend themselves so naturally to modern kitchen-diner extensions. Add in the good schools, the Piccadilly and Elizabeth line connectivity, and the enormous green lung of Walpole and Lammas Parks, and it's easy to see why families choose Ealing — and why they typically stay, extending and renovating rather than moving on. That's exactly the kind of long-view homeowner we love to partner with. Our sole focus is the private domestic home, and our team is set up to work carefully around real families: predictable start times, clean sites, weekly walk-throughs, and clear communication from the project lead so parents can plan around the build.

Section · 02

Ealing landmarks and neighbourhoods we regularly work in

We're often on-site around Pitshanger Village (W5), Northfields (W13), West Ealing, Ealing Broadway and the streets around Cleveland Park, Argyle Road and Woodfield Road. Homeowners tell us the pull of the area is places like Walpole Park and Pitshanger Manor, the food scene along Northfield Avenue and the Green, and the boutique shops on Pitshanger Lane. If your home sits inside the Brentham Garden Estate conservation area, we bring particular experience: Brentham has a strict character brief and Ealing Council enforces material and detail rules carefully. We are used to working within those constraints — matching brickwork, retaining timber sashes, coordinating roof line changes and preserving the arts-and-crafts character that gives the estate its value.

Section · 03

Services we deliver in Ealing

The projects we most commonly deliver in Ealing include: single-storey side-return kitchen extensions on the classic Edwardian and Victorian terraces around Northfields and West Ealing; wrap-around ground-floor extensions that reconfigure the kitchen-diner-living relationship on the semis of Pitshanger; L-shape and hip-to-gable dormer loft conversions that add a master bedroom and en-suite for growing families; and full whole-home refurbishments that bring older Ealing houses up to modern insulation, wiring, and heating standards without stripping their character. Every project is delivered under a single fixed-price contract with a defined programme, staged payments tied to milestones, and our 10-year structural guarantee. Where planning permission or a lawful development certificate is needed, we handle the submission and liaison with Ealing Council in-house.

Section · 04

Why Prime Build for your Ealing project

There are a lot of builders in Ealing — but very few who focus exclusively on private domestic work at the finish level our clients expect. What that means in practice: measured pre-contract estimates that hold, in-house joinery for kitchens and fitted furniture, MEP (mechanical, electrical, plumbing) coordinated by a single project lead, and a considered handover with a full snagging list. We're a UK-registered limited company, fully insured, and every project is inspected and signed off by Building Control. Where clients have architects or interior designers already engaged, we work naturally as the contractor within the design team; where they don't, we can introduce trusted design partners who understand Ealing's stock and planning environment.

Popular services in Ealing

What we typically build in W5 / W13.

Service

House Extensions

From single-storey kitchen extensions to full double-storey side-returns, we design and build extensions that add space, value and light to your London home — completed on time, on budget and to a 10-year structural guarantee.

Explore

Service

Loft Conversions

Turn unused roof space into a master suite, home office or family room. We design and build dormer, mansard, hip-to-gable and L-shape loft conversions across London — from structural opening to finished ensuite.

Explore

Service

Kitchen Renovations

From a fresh kitchen fit-out to a full open-plan kitchen-diner extension with bifold doors and underfloor heating — we design, build and finish kitchens that will define your home for the next decade.

Explore

Service

Full House Renovations

A whole-home renovation is the deepest, most transformative project we deliver — and the one we love most. From strip-out and structural openings through MEP, joinery, kitchens, bathrooms and finishing, you get one accountable team and one contract.

Explore

Local projects

Recently delivered in Ealing.

Extension

Ealing Rear Extension

Extension

Ealing Two-Storey Side Extension — Completed

Extension

Ealing Extension — Sandstone Patio Install

Extension

Ealing Block-Paving Driveway

FAQs · Builders in Ealing

Answers for Ealing homeowners.

Many single-storey side-return extensions on Ealing terraces fall under Permitted Development rights, but this depends on your specific address, whether Article 4 applies (as it does in parts of Brentham), and how large your extension needs to be. We assess this at the free consultation and either submit for a Lawful Development Certificate or a full Householder Planning Application — whichever is right for your project.

Serving Ealing