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A dormer loft conversion is one of the most popular types of loft conversions in the UK. It involves extending your existing roof vertically to create more headspace and usable floor area, usually with a flat roof added to the dormer. Here’s a breakdown of what you might want to know:

What is a Dormer Loft Conversion?

A dormer is a structural extension that projects vertically from the plane of a sloping roof. It creates additional headroom and floor space in the loft area, making it more comfortable and functional.

Types of Dormer Conversions

Pros

Cons

Estimated Cost (UK 2025)

Basic dormer: £30,000–£50,000

Larger or L-shaped dormers: £45,000–£70,000+

Planning Permission

Often not required if it falls under Permitted Development.

You will need planning permission if:

Building Regulations

Regardless of planning permission, building regs approval is required, covering:

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Tel: 0203 478 9693

info@jpbloftsandextensions.co.uk

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