Permitted Development Extensions in Lewisham

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

• Two-storey extension too close to rear boundary
• Side extension exceeds half the width of the original house
• Extension built beyond original rear wall line
• Extension within a conservation area in Lewisham
• Raised decking exceeding permitted height
• Overlooking concerns from upper floor windows

Property Types We Advise On in Lewisham

• Bungalows
• Properties with outbuildings
• Semi-detached houses
• Edge-of-settlement homes
• Victorian properties

Frequently Asked Questions

Do I need structural calculations?

Yes, building regulations often require structural calculations for beams, foundations, and load-bearing elements.

Can I build right up to my boundary?

It depends on height and location. Boundary proximity affects allowable eaves height.

Can I remove a chimney without permission?

External alterations may require permission depending on property type and location.

Can I install rooflights under permitted development?

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

What is the difference between planning permission and building regulations?

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

What is retrospective planning permission?

Retrospective applications seek approval for work already carried out.

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