Builders in Sutton, Cheam, Wallington & Banstead

Excel Construction carries out house extensions, loft conversions, refurbishments and new builds in Sutton, Cheam, Wallington and Banstead, managed by one main contractor from design to handover.

Building work we do in Sutton, Cheam, Wallington and Banstead

• Rear, side and wraparound house extensions.
• Loft conversions: rear dormer and hip-to-gable.
• Kitchen, bathroom and whole-house refurbishments.
• Roofing and flat roof replacement.
• Knock-down rebuilds and new builds on larger plots in Banstead.

Building on local homes

Sutton, Cheam and Wallington are made up largely of interwar and Edwardian family houses, many of them semi-detached with rear gardens that take a good-sized extension. Cheam has a village centre with a conservation area, so homes close to it can be subject to tighter rules. Banstead sits just across the border in Surrey, with larger detached houses on generous plots, some of them close to the Green Belt. For many of the semis here, a side and rear extension combined with a hip-to-gable loft makes the most of the plot without moving.

Area notes: what we see in each town

Sutton

A mix of interwar and Edwardian family houses. Semi-detached homes often suit a side and rear extension combined with a hip-to-gable loft.

Cheam

Cheam has a village centre with a conservation area, so homes close to it can face tighter rules on design and materials.

Wallington

Mostly interwar semis and terraces, popular for loft conversions and kitchen extensions that add space without losing the garden.

Banstead

Larger detached houses on generous plots. Banstead is in Surrey, so Reigate & Banstead is the planning authority, and Green Belt policy can apply on some roads.

Planning and permitted development

Sutton and Wallington fall under the London Borough of Sutton, while Banstead is in Reigate & Banstead, so the planning authority depends on your postcode. Permitted development covers a lot of loft and rear extension work on houses, but conservation areas and Green Belt locations are treated differently. We confirm the route with the right council before any drawings are finalised.

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 you work in both Sutton and Banstead?

Yes. We cover Sutton, Cheam, Wallington and Banstead, even though the councils are different, and we deal with the correct planning authority for your address.

Can I extend a semi-detached house in Cheam?

Usually yes, though homes near Cheam village may be in a conservation area. We check the status of your property before design work begins.

Get a free quote in Sutton

Planning work in Sutton, Cheam, Wallington and Banstead? Contact us for a free site visit and quote, or see all the areas we cover.

Nearby areas we cover: Croydon, Purley and Coulsdon, Wimbledon and Morden, Epsom, Ashtead and Esher, Reigate and Tadworth.