The Extension Works
UK only: we design and build extensions in London & the South East of England (Surrey, Hampshire & Berkshire) — we can’t quote for projects outside the UK.
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height extension approval

4m & 3m Limits: Permitted Development Heights for Extensions in England

Permitted development heights in England for single storey extensions: 4m max and 3m eaves within 2m of a boundary. Practical measurement tips, checklist...

The Extension Works 27 September 2026
4m & 3m Limits: Permitted Development Heights for Extensions in England