Permitted Development Extensions in Crowthorne

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

• Overlooking concerns from upper floor windows
• Extension covering more than 50% of garden area
• Outbuilding positioned forward of principal elevation
• Materials not matching existing dwelling
• Incorrect measurement from original dwelling
• Permitted development rights removed by planning condition

Property Types We Advise On in Crowthorne

• 1930s suburban homes
• Terraced houses
• Homes subject to Article 4 Directions
• Edge-of-settlement homes
• Townhouses

Frequently Asked Questions

Are side extensions allowed under permitted development?

Side extensions are permitted in some cases, but must not exceed half the width of the original house and must meet height limits.

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.

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.

Can I add bi-fold doors to my extension?

Yes, provided the extension itself complies with permitted development rules and glazing requirements meet building regulations standards.

Are there restrictions on side-facing windows?

Yes. Upper-floor side-facing windows typically must be obscure-glazed and non-opening below a certain height.

What is the difference between planning permission and building regulations?

Planning permission controls development impact, while building regulations ensure structural safety and compliance.

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