Permitted Development Extensions in Ashford

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

• Extension within a conservation area in Ashford
• Overall height above permitted maximum
• Eaves height exceeding 3 metres near boundary
• Roof alteration exceeding permitted cubic volume
• Overlooking concerns from upper floor windows
• Materials not matching existing dwelling

Property Types We Advise On in Ashford

• Chalet-style houses
• 1930s suburban homes
• Townhouses
• Rural properties
• Properties with outbuildings

Frequently Asked Questions

Can I extend a house that has already been extended?

Permitted development limits are cumulative, so previous extensions may reduce what is still allowed.

Do I need planning permission for a rear extension in Ashford?

Many rear extensions fall within permitted development limits, but projection depth, height, and boundary proximity must comply with national rules and any local restrictions.

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.

Are garden rooms permitted development?

Garden rooms may qualify if they meet size and usage limits and are not used as separate accommodation.

Can I build over a sewer?

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

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 Ashford and want to confirm whether it qualifies under permitted development rules, request a free assessment today and get clarity before you build.