Price guides / Loft Conversions & Extensions / Henley-on-Thames
How much does a loft conversion cost in Henley-on-Thames?
Typical UK price (used for Henley-on-Thames)
£45,000 – £120,000
per project · most people pay around £65,000
| Basic Velux conversion (outside London) | £20,000 – £35,000 | per project |
What affects the price
- Conversion type: Velux, dormer, hip-to-gable or mansard
- Planning permission and building control
- Stairs, bathroom and structural work
- Where you live: London and the South East are often 15-30% higher
- Access, parking and how easy the job is to reach
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Guide prices are typical UK figures researched from Builder Expert loft conversion cost 2025, checked 07/10/2026. Prices vary; always compare quotes.