Permitted Development Extensions in Ashmore Green

We provide clear, professional guidance on permitted development extensions in Ashmore Green 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 Ashmore Green

• Incorrect measurement from original dwelling
• Extension covering more than 50% of garden area
• Side extension exceeds half the width of the original house
• Materials not matching existing dwelling
• Extension built beyond original rear wall line
• Rear extension exceeds permitted projection limits Ashmore Green

Property Types We Advise On in Ashmore Green

• Properties with outbuildings
• Chalet-style houses
• Semi-detached houses
• Victorian properties
• Rural properties

Frequently Asked Questions

Can I extend above a single-storey extension?

Possibly, but this often requires planning permission and must comply with height and design considerations.

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.

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 building regulations approval still apply?

Yes. Even if planning permission is not required, building regulations approval is usually still necessary.

Can I add a balcony to my extension?

Balconies and raised platforms are not permitted development and usually require planning permission.

Do conservation areas affect permitted development rights?

Yes. Properties within conservation areas often have additional restrictions, and some permitted development rights may be limited or removed entirely.

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