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An L-shaped dormer loft conversion is a powerful way to unlock serious space, especially in Victorian or Edwardian terraced houses. It’s like combining two dormers—one on the main roof and another on the rear roof extension—to form an L-shape from above.

What is an L-Shaped Dormer Loft Conversion?

It’s a double dormer that connects:

This setup creates a massive, versatile loft space.

L Shaped Dormer

Best Suited For

Key Benefits

Things to Consider

Planning Permission

Often falls under Permitted Development, but:

Building Regulations

Required for:

Estimated Cost (UK 2025)

£60,000–£90,000 depending on size, spec, and access

High-spec finishes or en suites may push it higher

Popular Layouts

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If you would like expert advice on your project or request a quotation, just contact us:

Tel: 0203 478 9693

info@jpbloftsandextensions.co.uk

10 year guarantee on all new building materials and workmanship