Planning appeal decision
5 Llanvair Drive, Ascot, Windsor And Maidenhead, SL5 9HS
Planning appeal 3371778 at 5 Llanvair Drive, Ascot, Windsor And Maidenhead, SL5 9HS (Royal Borough of Windsor and Maidenhead) was dismissed on 11 March 2026 by Inspector Murphy S, by written representations. The main issue, as the Inspector framed it: the effect of the proposal on the character and appearance of the area.
subdivision of existing dwelling into 2x semi-detached dwellings with garage conversion, single storey and two storey rear extensions, first floor extension, new roof and 1no front canopy. Along with formation of new access
- Appeal type
- minor · Planning Appeal
- Procedure
- Written Representations
- Development
- residential · Minor Dwellings
- Inspector
- Murphy S
- Postcode
- SL5 9HS
Main issues, as the Inspector framed them
- the effect of the proposal on the character and appearance of the area
- the effect on the living conditions of the occupants of 3 Llanvair Drive with reference to outlook, privacy, sunlight and daylight
- whether the proposal would secure acceptable living conditions for future occupiers of Plot 2
- the effect of the proposal on trees, including protected trees
- whether the proposal makes adequate provision for cycle storage
- the effect of the proposal on the integrity of the Thames Basin Heaths Special Protection Area (SPA)
- the effect of the proposal on highway and pedestrian safety
- effects on priority species and provision of biodiversity net gain (BNG)
- whether the proposal complies with the adopted policies relating to climate change and carbon emissions
What decided it
The unmitigated significant adverse effect on the integrity of the Thames Basin Heaths SPA, combined with substantial harm to character and appearance and failure to provide acceptable living conditions for future occupiers, provided a strong reason for refusal that outweighed the housing delivery benefit.
The benefits of delivering one additional dwelling and economic benefits during construction and occupation were outweighed by the substantial harm to character and appearance, significant overbearing impact on neighbouring amenity, failure to provide acceptable living conditions for future occupiers, pressure on protected trees, substandard cycle storage, and unmitigated significant adverse effect on the SPA integrity.
What the Inspector cited
- Development plan policies
- Policy QP3Policy HO5Policy NP/DG1.1Policy NP/DG1.2Policy NP/DG1.3Policy NR3Policy NR2Policy NR4Policy IF2Policy SP2Policy NP/EN2Policy NP/EN4
- National Planning Policy Framework
- Paragraph 11Paragraph 135Paragraph 194
- Judgments
- Holborn Studios Ltd v The Council of the London Borough of Hackney [2017] EWHC 2823 (Admin)
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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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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