Sheen SW14
Loft & Extension Specialists in East Sheen
Specialist loft conversion and extension builders. FMB members.
07564 041115Our Services in Sheen
Loft Conversions
Dormer, mansard, hip-to-gable, and L-shaped conversions for Sheen's period properties.
- 8–12 week build
- From £75,000
- Planning handled
Extensions
Rear, side return, and wraparound extensions. Open-plan living designed for Sheen homes.
- 8–14 week build
- From £60,000
- Party wall managed
Sheen Cost Guide
| Type | Typical Cost | Planning? |
|---|---|---|
| Velux / Rooflight | £55,000 – £75,000 | Usually no |
| Rear Dormer | £75,000 – £110,000 | Often no |
| L-Shaped Dormer | £90,000 – £140,000 | Check with us |
| Mansard | £100,000 – £160,000+ | Yes |
| Rear Extension | £60,000 – £90,000 | Often no |
| Side Return | £40,000 – £60,000 | Often no |
All costs exclude VAT. Detailed quote provided before work begins.
Common Questions
Many extensions and loft conversions in Sheen fall under permitted development. Properties within the Mortlake and East Sheen conservation areas typically require planning permission from Richmond Council. We assess your planning position as the first step and manage the full application if needed.
Dormer conversions from £75,000, L-shaped dormers from £90,000, mansard from £100,000. Rear extensions from £65,000, side returns from £45,000. All fixed-price quotes with no hidden extras.
Loft conversions: 8–12 weeks. Extensions: 8–14 weeks. Conservation area properties may add 6–10 weeks to the pre-build phase for planning approval. We provide a detailed timeline before work begins.
Yes. East Sheen has a lot of Victorian and Edwardian terraces where party wall agreements are essential. We manage the full process — surveyor appointments, serving notices, and neighbour liaison — from start to finish.
A well-executed loft conversion or extension in East Sheen typically adds 15–25% to the property value, significantly more than the cost of the build. Homes near Sheen Common and the good local schools tend to see the strongest uplift.
Nearby areas we cover
Ready to talk about your project?
Free consultation. Transparent, fixed-price quote within 48 hours.