Permitted Development Extensions in Swanley

We provide clear, professional guidance on permitted development extensions in Swanley 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 Swanley

• Article 4 Direction restrictions
• Raised decking exceeding permitted height
• Extension on a flat or maisonette
• Roof alteration exceeding permitted cubic volume
• Extension within a conservation area in Swanley
• Overlooking concerns from upper floor windows

Property Types We Advise On in Swanley

• Corner plot homes
• Rural properties
• Chalet-style houses
• Homes subject to Article 4 Directions
• Bungalows

Frequently Asked Questions

What is the 45-degree rule?

The 45-degree rule is a guideline used by some councils to assess impact on neighbouring properties, particularly in relation to light and outlook.

What happens if I build without permission?

The council may take enforcement action requiring alterations or removal of unauthorised works.

Does permitted development apply to new-build homes?

Some new-build homes have permitted development rights removed by planning condition.

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.

Does my extension need to match existing materials?

While not always mandatory under permitted development, matching materials is often recommended for visual consistency.

What is prior approval neighbour consultation?

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

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