Barnes · SW13

Castelnau, Barnes

Long road with large Victorian and Edwardian houses. Discover what renovation projects are possible and get expert guidance from our RIBA chartered architects.

About Castelnau

Long road with large Victorian and Edwardian houses. The Victorian detached, Edwardian houses, period semi-detached found on this road represent some of Barnes's most characterful residential architecture.

Property Types

  • Victorian detached
  • Edwardian houses
  • period semi-detached

Property Values

Properties on Castelnau typically range from £2M-£5M, reflecting the road's desirable location in Barnes, SW13.

Conservation Status

Castelnau falls within the Barnes Conservation Area. All external alterations require careful consideration of the area's character and appearance. Our planning team will guide you through the requirements.

Planning Notes: Conservation area. TPO on trees.

Quick Facts

Location Barnes, SW13
Property Values £2M-£5M
Conservation Area Yes
Popular Projects  
  • Basement Conversion
  • House Extension
  • Full Refurbishment
  • Loft Conversion
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Popular Projects on Castelnau

Basement Conversion

With Victorian detached properties typical of Castelnau, basement conversions offer significant additional living space without altering the streetscape. Ideal for creating home cinemas, gyms, or additional bedrooms in this SW13 location.

House Extension

Well-designed extensions on Castelnau can add significant living space to SW13 properties. Our architects create designs that complement the existing Victorian detached character while maximising internal space.

Full Refurbishment

A whole-house refurbishment on Castelnau transforms tired period properties into contemporary family homes. With values at £2M-£5M, investing in quality renovation delivers excellent returns in Barnes.

Loft Conversion

Loft conversions are one of the most popular projects on Castelnau, offering excellent return on investment for Barnes homeowners. The victorian detached, edwardian houses, period semi-detached here often have ideal roof pitches for dormer or mansard conversions.

Planning & Permissions on Castelnau

Planning Notes

Conservation area. TPO on trees.

Our in-house planning consultants will prepare and submit all necessary applications for your Castelnau project, liaising directly with the local authority on your behalf.

97% Our planning approval rate across London, reflecting our deep understanding of local policies and relationships with planning officers.
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Conservation Area Guidance

Castelnau is located within the Barnes Conservation Area. All external alterations must preserve or enhance the character and appearance of the area. This includes:

  • Using materials that match or complement the existing streetscape
  • Maintaining original architectural features such as windows, doors and decorative elements
  • Ensuring any extensions or additions are subordinate to the original building
  • Protecting mature trees and established garden landscapes

Estimated Costs on Castelnau

Indicative costs per square metre for renovation projects on Castelnau, Barnes. Prices reflect the SW13 location and typical property types found on this road.

Project Type Standard (per m²) Premium (per m²) Luxury (per m²)
Basement Conversion £3,240 - £4,320 £4,320 - £5,940 £5,940 - £8,640
House Extension £2,700 - £3,456 £3,456 - £4,320 £4,320 - £5,940
Full Refurbishment £1,296 - £1,944 £1,944 - £3,024 £3,024 - £4,320
Loft Conversion £2,700 - £3,456 £3,456 - £4,320 £4,320 - £5,940

Costs are indicative and based on typical projects in Barnes. Final pricing depends on specification, site conditions and scope. All prices exclude VAT.

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