Blackburn, Lancashire
Loft Conversion in Blackburn
A loft conversion transforms unused attic space into a habitable room, offering one of the best returns on investment of any home improvement project.
Estimated Cost
£22,550 – £35,875
Based on 25m² at local rates
6–12 weeks typical duration
Planning permission: Usually not required
Cost Breakdown for Loft Conversion
Estimated costs for a typical 25m² loft conversion project, adjusted for local labour and material rates.
| Category | Low Estimate | High Estimate |
|---|---|---|
| Foundations & Groundworks | £2,706 | £4,305 |
| Structural Walls | £3,383 | £5,381 |
| Roof Structure & Covering | £2,255 | £3,588 |
| Windows & Doors | £1,804 | £2,870 |
| Plumbing & Drainage | £1,804 | £2,870 |
| Electrical Installation | £1,353 | £2,153 |
| Plastering & Rendering | £1,353 | £2,153 |
| Flooring | £1,128 | £1,794 |
| Kitchen/Bathroom Fitting | £2,255 | £3,588 |
| Decoration & Finishing | £1,128 | £1,794 |
| Professional Fees | £2,255 | £3,588 |
| Contingency (10%) | £1,128 | £1,794 |
| Total Estimated Cost | £22,550 | £35,875 |
* Costs are estimates based on regional averages and may vary depending on specification, access, and site conditions. Prices include VAT at 20%.
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