Chelsea SW3
Loft & Extension Specialists in Chelsea
Specialist loft conversion and extension builders. FMB members.
07564 041115Our Services in Chelsea
Loft Conversions
Dormer, mansard, hip-to-gable, and L-shaped conversions for Chelsea's period properties.
- 8–12 week build
- From £75,000
- Planning handled
Extensions
Rear, side return, and wraparound extensions. Open-plan living designed for Chelsea homes.
- 8–14 week build
- From £60,000
- Party wall managed
Chelsea 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
Most Chelsea properties are in RBKC conservation areas requiring planning permission for external alterations. We have extensive experience navigating RBKC planning requirements and provide free assessments.
Luxury extensions from £80,000, with larger high-specification projects from £120,000–£250,000+. Loft conversions from £75,000. Detailed, transparent quotes provided.
Yes. We specialise in Chelsea's Georgian, Victorian, and Edwardian properties. We sensitively restore period features while incorporating modern amenities.
Loft conversions: 8–12 weeks. Extensions: 12–16 weeks. Full refurbishments: 4–8 months. We work efficiently while maintaining the highest quality standards.
Ready to talk about your project?
Free consultation. Transparent, fixed-price quote within 48 hours.