Sutton Borough is one of outer London's most active extension markets, covering Sutton, Cheam, Carshalton, Wallington and Worcester Park — largely semi-detached and detached properties well suited to extensions.
Planning in Sutton
Single-storey rear extensions up to 3m (semi) or 4m (detached) are usually Permitted Development. The Prior Approval route allows up to 6m or 8m respectively. Cheam Village and parts of Carshalton are conservation areas with additional restrictions.
Costs
Single-storey extension: £38,000–£65,000. Double-storey: add £20,000–£35,000. Second-fix materials are client-supplied under rcbGroup's standard contract.
Design-and-Build Advantage
rcbGroup coordinates architectural drawings, structural engineer input, Building Control, and delivery under one contract — removing the coordination gaps common when clients manage separate professionals.
Contact rcbGroup
Covering Sutton, Cheam, Carshalton, Wallington and all SM and KT postcodes. Email: connect@rcbGroup.co.uk | Phone: +44 7359 872594 | rcbGroup.co.uk