Permitted Development Extensions in London

We provide clear, professional guidance on permitted development extensions in London and surrounding areas. Whether you’re planning a rear, side, or two-storey extension, understanding local planning constraints and national permitted development limits is essential before work begins.

Common Permitted Development Issues in London

• Incorrect measurement from original dwelling
• Dormer facing road
• Raised decking exceeding permitted height
• Two-storey extension too close to rear boundary
• Roof alteration exceeding permitted cubic volume
• Extension built beyond original rear wall line

Property Types We Advise On in London

• Rural properties
• 1930s suburban homes
• Homes subject to Article 4 Directions
• Detached houses in London
• Edge-of-settlement homes

Frequently Asked Questions

Can I build an outbuilding in my garden?

Outbuildings may be permitted development if they meet height, location, and usage restrictions.

What happens if permitted development rights have been removed?

If rights have been removed by planning condition or Article 4 Direction, you will likely need to submit a full planning application before building.

Can I submit planning drawings myself?

Yes, but professional plans improve clarity and reduce refusal risk.

How is the original house defined for measurement purposes?

The “original house” refers to the property as it stood on 1 July 1948 or when it was first built, not including later extensions.

Is planning permission needed for internal alterations?

Internal changes usually do not require planning permission unless the property is listed.

Can I convert my loft and add a dormer?

Dormer loft conversions are often permitted development within volume limits.

If you're planning an extension in London and want to confirm whether it qualifies under permitted development rules, request a free assessment today and get clarity before you build.