Planning appeal decision
148 Whatley Avenue, Wimbledon Chase, London, SW20 9NU
Planning appeal 3334778 at 148 Whatley Avenue, Wimbledon Chase, London, SW20 9NU (London Borough of Merton) was dismissed on 10 July 2024 by Inspector Wilson S, by written representations. The main issue, as the Inspector framed it: Whether the Council's refusal to issue a certificate was well founded.
loft conversion to include a hip to gable enlargement with rear dormer and two front facing roof lights
- Authority
- London Borough of Merton
- Appeal type
- ldc · Lawful Development Certificate
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Wilson S
- Postcode
- SW20 9NU
Main issues, as the Inspector framed them
- Whether the Council's refusal to issue a certificate was well founded
What decided it
The proposal exceeded the 40 cubic metre volumetric limit for roof enlargement on terraced houses under GPDO 2015 Class B when measured externally and including the volume of the 1983 first-floor extension, and the external platform with balustrade constituted a non-permitted balcony.
The decision letter
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With an account
What an account adds to this decision


More decisions in London Borough of Merton
The authority’s record since 2016 · every decision in 2024
- Dismissed23 October 2026600671771 Leamington Avenue, Morden, SM4 4DQ
- Dismissed21 October 2026600895718, West Place, London, SW19 4UH
- Notice upheld21 September 2026336444331 Glebe Avenue, Mitcham, CR4 3DZ
- Allowed7 August 2026600754311B Calonne Road, Merton, Wimbledon, SW19 8HH
- Dismissed17 July 2026600695535 Kingston Road, London, SW19 1JW
The main issues, what decided it, the planning balance and the policies and judgments listed as cited are read from the published letter by Town Planner Pro and are our summary, not the Inspector’s words; the letter itself is the record. Contains public sector information licensed under the Open Government Licence v3.0. Research, not advice.
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