Builders in Wimbledon, Morden & Colliers Wood

Excel Construction builds house extensions, loft conversions and refurbishments in Wimbledon, Morden and Colliers Wood, with one main contractor responsible for the whole project.

Building work we do in Wimbledon, Morden and Colliers Wood

• House extensions for Victorian, Edwardian and interwar homes.
• Loft conversions with rear dormers and hip-to-gable roofs.
• Basement and lower-ground-floor works where the site allows.
• Full refurbishments and kitchen extensions.
• Zinc and aluminium roofing for extensions and dormers.

Building on local homes

Wimbledon is known for large Victorian and Edwardian family houses, many on generous plots near the Village and around Wimbledon Park, where homeowners often extend at the rear or add a loft rather than move. Further south, Morden and Colliers Wood have more terraces and 1930s semis, which suit side return extensions and rear dormers. In all three areas, shared party walls are common, so we plan the party wall process early.

Area notes: what we see in each town

Wimbledon

Large Victorian and Edwardian family houses, many with deep gardens, where owners often extend at the rear or add a loft rather than move. Conservation areas cover parts of the town.

Morden

Largely interwar terraces and semis, well suited to loft conversions, side extensions and kitchen extensions.

Colliers Wood

Terraces and smaller houses, many with shared party walls. Rear dormers and side return extensions are the usual ways to gain space.

Planning and permitted development

Merton Council is the planning authority here. Merton has seven conservation areas in Wimbledon alone, including Wimbledon Village, where rules on roof alterations and materials are stricter. Upper Morden is also a conservation area. We check what applies to your address and prepare the drawings to suit.

For more detail, read our guide to loft conversion planning permission in London and Surrey.

How a project works with us

1. Free site visit. We look at the house, listen to what you want and talk through options.
2. Design and approvals. Drawings, structural design, planning where needed, building control and party wall notices.
3. Fixed written quote. A clear price, with a named project manager.
4. Build. Our own team carries out the work, managed by one main contractor.
5. Handover. A final check with you before you move back in.

What does it cost?

Every project is priced after a site visit, but our guides explain typical 2026 costs. See the house extension cost guide, the new build cost guide, the flat roof cost guide, the loft conversion cost guide and the kitchen extension cost guide. You can also read about our extensions, loft conversions and new builds.

Why homeowners choose Excel Construction

• One main contractor, so there is no chasing separate trades.
• Around 20 years of experience and a team of around 24 operatives.
• Clear written quotations and a named project manager.
• Party wall notices, drawings and building control handled for you.

Questions homeowners ask

Do I need permission to extend a house in Wimbledon?

Many extensions are allowed under permitted development, but conservation areas and some roads have extra controls. We check your address before design starts.

Do you handle party wall agreements in Wimbledon?

Yes. We manage the notices and work with the surveyors so the process does not hold up the build.

Get a free quote in Wimbledon

Planning work in Wimbledon, Morden and Colliers Wood? Contact us for a free site visit and quote, or see all the areas we cover.

Nearby areas we cover: Sutton, Cheam and Wallington, Kingston and Surbiton, Putney and Richmond, Tooting and Balham.