What is the cost of a Wimbledon double-storey extension in 2026?

A well-specified double-storey rear extension of around 40m² on a Wimbledon family home typically runs £220,000–£380,000, depending on finish level, kitchen specification, glazing and whether the roofline is altered. Fixed-price contract issued before commit.

How disruptive is a basement dig on a Wimbledon street?

Basement construction is inherently the noisiest and most invasive part of a project, but we manage this by phasing: excavation happens under strict programme, party wall protocols are followed, and haulage is scheduled off peak. Most of the disruption is compressed into 6–10 weeks of the total programme.

Do you handle party-wall agreements?

Yes. Where a basement, rear or side extension affects a shared wall or a neighbouring foundation, we appoint and coordinate the party-wall surveyor on your behalf and manage the awards process, including neighbour communication.

Are you comfortable working around live homes in prestige streets?

Very. Wimbledon is one of our most active postcodes, and we run our sites to a standard that suits the street: predictable hours, tidy site, no oversized skips outside, protected finished areas, and clear neighbour communication whenever we need road or parking access.

Wimbledon residential street — Prime Build Design

Luxury Family Homes & Upscale Extensions · SW19

Builders in
Wimbledon.

Wimbledon is one of South-West London's most desirable family postcodes. From the detached homes on Parkside and the Victorian villas around Wimbledon Village to the family streets of Southfields and West Wimbledon, SW19 is a district of quiet prestige — and the construction it demands has to match. Prime Build Design's Wimbledon practice focuses on luxury family-home renovations, double-storey extensions, basement extensions and the kind of quiet, respectful site that Wimbledon streets expect.

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Section · 01

SW19: a district of quiet prestige

Wimbledon Village's Victorian and Edwardian villas, the family homes off the Common, the larger detached properties around Parkside and Copse Hill, and the family terraces of Southfields all share a common character: this is a place where the standard of finish, and the way construction is delivered on the street, matters as much as the finished home. Merton Council's planning approach in Wimbledon is careful, particularly in the Wimbledon Village and Common-side conservation areas. We work daily within that context — planning submissions handled in-house, contractors from the same team on every project, and site management that keeps deliveries and noise off prestige residential streets whenever possible.

Section · 02

Wimbledon landmarks and neighbourhoods we serve

We regularly work in Wimbledon Village (SW19), around the Common, along Parkside, Copse Hill and Ridgway, and in the family streets of Southfields, West Wimbledon and Raynes Park. Homeowners in these neighbourhoods often ask us to add family-scale space — a rear extension with a large kitchen-diner opening on to the garden, a loft conversion delivering a master suite, or a basement excavation that adds a media room, gym and utility. Where projects sit inside the Wimbledon Village conservation area, our planning submissions include the character justification Merton expects, and our material specifications match the brick, tile, timber and glazing detail of the street.

Section · 03

Services we deliver in Wimbledon

Our most common Wimbledon briefs are luxury whole-home renovations delivered under one contract; double-storey rear or side extensions that add a family-scale kitchen-diner below and a master bedroom above; basement extensions that create a substantial lower-ground level for media, gym, wine and utility; and bespoke joinery-led projects — fitted wardrobes across principal bedrooms, bespoke staircases, and family storage worked seamlessly into the fabric of the home. Every project runs under a fixed-price contract with staged milestone payments, weekly reporting, and our 10-year structural guarantee. Our team includes in-house joinery, MEP coordination, and full snagging and aftercare.

Section · 04

Why Prime Build for your Wimbledon home

Wimbledon homeowners often tell us the deciding factor was our approach on the street — quiet, considerate, and predictable — combined with our willingness to hold to fixed-price contracts even on complex structural work like double-storey extensions and basement excavations. Where a project needs a party-wall surveyor, we manage the instruction and awards. Where a project needs a structural engineer, we appoint and coordinate on your behalf. And where the project needs a decant, we help plan it so daily life continues smoothly. The result is a construction programme that respects your home, your street and your family.

Popular services in Wimbledon

What we typically build in SW19.

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.

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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.

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Service

Structural Work

The hardest part of any renovation is rarely visible once it's finished — the steel beams, structural openings, underpinning and load redistribution that make modern open-plan living possible. We've been doing it for 10 years across London.

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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.

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Local projects

Recently delivered in Wimbledon.

Renovation

Wimbledon Bespoke Oak Staircase

Renovation

Wimbledon Bespoke Under-Stair Storage

FAQs · Builders in Wimbledon

Answers for Wimbledon homeowners.

Yes — basement projects in SW19 are one of our specialist areas. We manage structural engineering, underpinning, waterproofing (BS 8102 grades 2 and 3), party wall awards and Merton Council planning submissions as part of the contract.

Serving Wimbledon