How Much Does Loft Conversion Cost?
Loft conversion costs for different types including dormer, mansard, and velux
Budget
£240,000
Average
£330,000
Premium
£455,000
Loft Conversion Price Breakdown
| Item | Budget | Mid-Range | Premium | Notes |
|---|---|---|---|---|
| Velux/rooflight only | £25,000 | £35,000 | £45,000 | - |
| Rear dormer | £40,000 | £55,000 | £75,000 | - |
| L-shaped dormer | £50,000 | £70,000 | £95,000 | - |
| Hip-to-gable + dormer | £55,000 | £75,000 | £100,000 | - |
| Mansard | £65,000 | £85,000 | £120,000 | - |
| En-suite bathroom | £5,000 | £10,000 | £20,000 | Additional cost |
| Total (Fixed Items) | £240,000 | £330,000 | £455,000 |
What Affects Loft Conversion Cost?
Conversion type
Velux, dormer, hip-to-gable, mansard
Current roof structure
Traditional rafters easier than trusses
En-suite requirement
Adds plumbing and space needs
Staircase location
Space for stairs affects lower floor
Planning permission
Some types need permission
Finish level
Basic vs high-end specifications
Loft Conversion Cost by Area
Prices vary by location. Select an area for specific local pricing.
Hampstead
Conservation area, higher specs
From £300,000
Belsize Park
Period properties
From £288,000
Highgate
Conservation area
From £300,000
Primrose Hill
Premium area, strict planning
From £300,000
Crouch End
Desirable area
From £276,000
Muswell Hill
Conservation areas apply
From £276,000
Kentish Town
Some conservation areas
From £264,000
Tufnell Park
Standard rates
From £264,000
Finsbury Park
Standard rates
From £252,000
Archway
Standard rates
From £252,000
✓ Included in Our Quotes
- ✓Structural design and calculations
- ✓Building control application and fees
- ✓All construction work
- ✓Staircase installation
- ✓Electrics and lighting
- ✓Plastering and decoration
- ✓Windows/rooflights
- ✓Insulation to regulations
✗ Not Included (May Be Extra)
- ✗Planning permission (if required)
- ✗Party wall agreements
- ✗En-suite bathroom
- ✗Built-in wardrobes
- ✗Premium flooring
- ✗External scaffolding charges
💡 Money-Saving Tips
A Velux conversion is cheapest if you have good head height
Rear dormers often don't need planning permission - check first
Bundle the bathroom with the conversion for efficiency savings
Standard Velux windows are much cheaper than custom options
Consider built-in storage under the eaves instead of expensive wardrobes
Loft Conversion Cost FAQs
Find answers to common questions about our services.
Still have questions? We're here to help.
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HAMPSTEAD RENOVATIONS - Your trusted property renovation company in Hampstead and refurbishment company in Hampstead
https://www.hampsteadrenovations.co.uk/ | Email: contact@hampsteadrenovations.co.uk