Permitted Development Extensions in New Ash Green

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

• Eaves height exceeding 3 metres near boundary
• Permitted development rights removed by planning condition
• Materials not matching existing dwelling
• Roof alteration exceeding permitted cubic volume
• Outbuilding positioned forward of principal elevation
• Side extension exceeds half the width of the original house

Property Types We Advise On in New Ash Green

• Corner plot homes
• Semi-detached houses
• Chalet-style houses
• Bungalows
• Terraced houses

Frequently Asked Questions

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.

Can I install rooflights under permitted development?

Rooflights are often permitted if they do not protrude significantly beyond the roof slope.

Do I need prior approval for a larger extension?

In some cases, larger home extensions require a prior approval process where neighbours are notified and the council assesses certain impacts.

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 is the maximum rear projection allowed?

Detached houses may extend up to four metres under standard rules, or eight metres with prior approval. Smaller limits apply to other house types.

Can I add a balcony to my extension?

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

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