Permitted Development Extensions in Greenwich

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

• Dormer facing road
• Permitted development rights removed by planning condition
• Incorrect measurement from original dwelling
• Raised decking exceeding permitted height
• Article 4 Direction restrictions
• Overall height above permitted maximum

Property Types We Advise On in Greenwich

• Properties within conservation areas
• 1930s suburban homes
• Townhouses
• Semi-detached houses
• Properties with previous extensions

Frequently Asked Questions

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.

Can I install rooflights under permitted development?

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

Are basements covered by permitted development?

Basement development may require planning permission, especially if it alters the external appearance.

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.

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

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 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.

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