Permitted Development Extensions in Hammersmith and Fulham

We provide clear, professional guidance on permitted development extensions in Hammersmith and Fulham 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 Hammersmith and Fulham

• Roof alteration exceeding permitted cubic volume
• Raised decking exceeding permitted height
• Side extension exceeds half the width of the original house
• Two-storey extension too close to rear boundary
• Incorrect measurement from original dwelling
• Extension on a flat or maisonette

Property Types We Advise On in Hammersmith and Fulham

• Chalet-style houses
• Victorian properties
• Properties within conservation areas
• Corner plot homes
• Homes subject to Article 4 Directions

Frequently Asked Questions

What measurements are used for height?

Height is typically measured from the highest ground level adjacent to the building.

Do I need planning permission for a loft conversion?

Many loft conversions are permitted development, but dormer size, roof alterations, and conservation area status may affect eligibility.

Can I build a two-storey extension without planning permission?

Two-storey extensions are sometimes permitted, but stricter limits apply to height, rear projection distance, and window placement to avoid overlooking neighbours.

Can I build over a sewer?

Building near or over a public sewer may require a build-over agreement from the relevant water authority.

What is prior approval neighbour consultation?

For larger extensions, councils notify neighbours and assess specific impacts before granting prior approval.

How high can my extension be?

Height limits vary, but rear extensions under permitted development generally cannot exceed four metres for detached houses or three metres for others.

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