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What is the cost of a
Loft conversion?

Being our most frequently asked question..

We know price is the most important factor when it comes to renovating your property. Therefore we’ve created this page to provide clear, upfront pricing estimates on what to expect for different types of loft conversions in the London area

What we've accounted for..

Our estimated costs for loft conversions include construction, electrics, plumbing, glazing & VAT

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Staircase to loft conversion
Velux Conversion

Velux Conversion

Estimated Cost:

£30,000

Potential Value Increase:

10-15%
L-Shaped Dormer Conversion

L-Shaped Dormer Conversion

Estimated Cost:

£60,000

Potential Value Increase:

20-25%
Dormer Conversion

Dormer Conversion

Estimated Cost:

£50,000

Potential Value Increase:

15-20%
Mansard Conversion

Mansard Conversion

Estimated Cost:

£70,000

Potential Value Increase:

20-25%
Hip-to-Gable Conversion

Hip-to-Gable Conversion

Estimated Cost:

£60,000

Potential Value Increase:

15-20%
Piggyback Conversion

Piggyback Conversion

Estimated Cost:

£70,000

Potential Value Increase:

20-25%

Last updated: 17/02/2025

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