®Planning appeal decision
5 Oaklands Avenue, Isleworth, TW7 5PX
Planning appeal 3277844 at 5 Oaklands Avenue, Isleworth, TW7 5PX (London Borough of Hounslow) was allowed in part (a split decision) on 9 March 2023 by Inspector Moore D, by written representations. The main issue, as the Inspector framed it: Whether the appellant has shown that the enforcement notice was not served as required by Section 172 of the 1990 Act and there has been substantial prejudice (ground e).
without planning permission, (1) the erection of a hip to gable rear roof dormer and the insertion of three roof lights; (2) the installation of UPVC (plastic) windows to the principal elevation of the house and the replacement of roof tiles to the house
- Authority
- London Borough of Hounslow
- Appeal type
- enforcement · Enforcement Notice
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Moore D
- Postcode
- TW7 5PX
Main issues, as the Inspector framed them
- Whether the appellant has shown that the enforcement notice was not served as required by Section 172 of the 1990 Act and there has been substantial prejudice (ground e)
- Whether the matters alleged do not constitute a breach of planning control (ground c)
- Whether the matters alleged were substantially completed four or more years prior to the issue of the notice (ground d)
- The effect of the development on the character and appearance of the host dwelling and the surrounding area, in particular the Osterley Park Conservation Area (ground a)
- Whether the steps required by the notice exceed what is necessary to remedy the breach of planning control (ground f)
- Whether the period for compliance with the notice is reasonable (ground g)
What decided it
The mismatch of materials—large profiled concrete roof tiles and dark grey plastic windows—creates an incongruous appearance in the street scene that adversely affects the significance of the Osterley Park Conservation Area with no substantiated public benefits to outweigh the harm.
What the Inspector cited
- Development plan policies
- Policy CC1Policy CC2Policy CC4Policy SC7
How the Inspector dealt with each one is set out in the app, in order: the development plan, national policy, housing land supply, other considerations and the planning balance, beside the letter.
See how each was appliedThe decision letter
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With an account
What an account adds to this decision
More decisions in London Borough of Hounslow
The authority’s record since 2016 · every decision in 2023
- Notice upheld28 September 20263340528Fawns Manor House, Hounslow, TW14 8EN
- Notice upheld22 September 2026336674819 Park Drive, London, W3 8ND
- Notice varied and upheld10 September 2026336003656 St. Stephens Road, Hounslow, TW3 2BQ
- Notice varied and upheld1 September 2026336177810 Pontes Avenue, Hounslow, TW3 3FH
- Planning permission granted24 July 202633584817 Tachbrook Road, Feltham, TW14 9PD
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.