Kingston upon Thames · South West London
Kingston is one of the most active boroughs in our portfolio. We have delivered loft conversions, mansard extensions, basement conversions, double storey extensions and wraparound extensions across Kingston, Surbiton and New Malden - and we handle both design and construction under a single contract.
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Working in Kingston
Kingston's housing stock is well suited to extension projects. Victorian terraces in Surbiton and New Malden lend themselves to rear extensions, side return infills and wraparound extensions. The semi-detached and detached houses across Coombe, Kingston Hill and Norbiton offer scope for larger double storey extensions and new build opportunities.
Loft conversions are popular across the borough. We have delivered both dormer and mansard loft conversions in Kingston, including within conservation areas where planning approval is needed. Basement conversions are also increasingly common, particularly in Surbiton where plot sizes limit outward expansion.
As experienced residential architects in London, we manage the full process from initial design through planning and construction. One team, one contract, one point of contact.
Services in Kingston
Kingston is the borough where we have completed the most projects. The range reflects the variety of homes across the area - from compact terraces in Surbiton to larger properties on Kingston Hill. We tailor each project to the property, the street and the planning context.
Kingston Council expects clear, well-considered design submissions. Our design-and-build model means the quality shown in the drawings is exactly what gets built on site.
Planning in Kingston
Kingston upon Thames has several conservation areas, including Kingston Old Town, Surbiton Hill, parts of Coombe and areas along the riverside. Properties within these zones have restricted Permitted Development rights and typically need a full planning application for any external changes.
Outside conservation areas, many extension types fall within Permitted Development. Standard rear extensions, dormer loft conversions and some side extensions can proceed without a planning application, subject to size and design limits. Mansard loft conversions always need planning permission because they alter the roofline.
Properties near the Thames or the Hogsmill River may require a flood risk assessment. We advise on the planning position for every property before starting any design work, so there are no surprises down the line.
Cost Guide
Construction costs in Kingston typically range from £2,200 to £3,500 per square metre, depending on specification and complexity. A single storey rear extension usually costs between £60,000 and £130,000. Double storey extensions typically come in at £100,000 to £200,000.
Loft conversions range from £50,000 to £100,000 depending on the type. Mansard conversions are usually £65,000 to £120,000. Basement conversions start from around £120,000 and can reach £300,000 or more depending on size and ground conditions.
Professional fees for architecture, structural engineering and building regulations usually add 10 to 15 percent on top. For broader London pricing, see our house extension cost guide and loft conversion cost guide.
Property Types
Kingston has a broad range of residential property. Victorian terraces dominate parts of Surbiton and central Kingston, many with side returns and rear gardens suited to extension projects. Edwardian and inter-war semi-detached houses are common across New Malden, Norbiton and Tolworth, often with loft potential and space for rear or double storey extensions.
Coombe and Kingston Hill have larger detached properties on generous plots - these tend to suit more ambitious projects including new builds and substantial renovations. The riverside areas around Kingston Bridge and Hampton Wick include a mix of period cottages and more recent apartment conversions.
Nearby Areas
Alongside Kingston, we regularly take on projects in Surbiton, New Malden, Norbiton, Coombe, Tolworth, Chessington, Hampton, Thames Ditton and Esher. We also work across Richmond, Wimbledon and Wandsworth.
Beyond South West London, we cover all of Greater London and within a 30-mile radius, including Chelsea, Kensington, Hampstead, Islington, Hackney, Camden and Surrey.
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