Balham SW12
Loft & Extension Specialists in Balham
Specialist loft conversion and extension builders. FMB members.
07564 041115Our Services in Balham
Loft Conversions
Dormer, mansard, hip-to-gable, and L-shaped conversions for Balham's period properties.
- 8–12 week build
- From £75,000
- Planning handled
Extensions
Rear, side return, and wraparound extensions. Open-plan living designed for Balham homes.
- 8–14 week build
- From £60,000
- Party wall managed
Balham 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 fall under permitted development. Properties in or near the Balham Park Road Conservation Area may need planning permission from Wandsworth Council. We assess this at the outset.
Dormer conversions from £75,000, L-shaped dormers from £90,000, mansard from £100,000. Fixed-price quotes with no hidden costs.
Loft conversions: 8–12 weeks. Extensions: 8–14 weeks. Detailed timeline provided before work begins.
A well-executed loft conversion in Balham typically adds 15–25% to your property's value. With Balham prices in the premium bracket, the return is substantial.
Nearby areas we cover
Ready to talk about your project?
Free consultation. Transparent, fixed-price quote within 48 hours.