Cost
At Stone Rock, we understand the importance of transparency when it comes to pricing for your renovation or refurbishment projects.
Our team is dedicated to providing high-quality work at competitive prices.
Here is an overview of our pricing for the services we offer:
LOFT CONVERSION COSTS
| Conversion Type | Price |
|---|---|
| Skylight/Velux Loft Conversion | £40k |
| Dormer Loft Conversion | £60k |
| Hip to Gable Loft Conversion | £70k |
| Mansard Loft Conversion | £70k+ |
Information
Home Extensions (Per SQM):
Type of Extension
- Basic Finish: £1,550 – £2,050 (Plaster finish, standard fittings - First Fix Stage)
- Mid-Range Finish: £2,150 – £2,550 (Good quality materials, nice spec)
- High-End / Bespoke: £2,600 – £3,400+. (Luxury finishes, glazing, complex design)
✅ Includes foundations, structure, basic electrics/plumbing — excludes VAT and professional fees.
🏠 Loft Conversions (Per SQM):
Type of Loft
Basic Rooflight Loft: £1,300 – £1,800 (Cheapest option, minimal structural work)
Dormer Loft Conversion: £1,700 – £2,200 (Adds space and head height)
Hip-to-Gable or Mansard Loft: £2,200 – £2,600+ (Major structural work, max space gain)
✅ Includes stair access, insulation, basic bathroom fit (if part of spec) — excludes VAT and fees.
⚠️ Cost Drivers to Keep in Mind:
- High-spec kitchens/bathrooms
- Complex steel or structural work
- Premium glazing or finishes
- Underfloor heating
- Planning permissions / party wall agreements
- London borough variations
💬 Quick Ballpark for Clients:
- Extensions — £1,900 to £2,600 per sqm
- Loft Conversions — £1,500 to £2,400 per sqm
Contact us for a quote
Ready to start your renovation or refurbishment project? Contact our team today for a personalized quote tailored to your needs.