34 Oxford Avenue, Hayes, UB3 5HY

Planning appeal 3364331 at 34 Oxford Avenue, Hayes, UB3 5HY (London Borough of Hillingdon) was dismissed on 10 September 2025 by Inspector Simms S, by written representations. The main issue, as the Inspector framed it: effect of the development on the character and appearance of the area.

to use existing outbuilding as granny annexe

Authority: London Borough of Hillingdon
Appeal type: minor · Planning Appeal
Procedure: Written Representations
Development: residential · Change of use
Inspector: Simms S
Postcode: UB3 5HY

Main issues, as the Inspector framed them

effect of the development on the character and appearance of the area
living conditions of existing and future occupiers, with particular regard to outlook, privacy, living space and external amenity space
living conditions of neighbouring occupiers, with particular regard to privacy, external amenity space, noise and disturbance

What decided it

The proposal would create a separate dwelling function within the outbuilding that would harm character and appearance, fail to provide adequate living conditions to occupiers, and cause noise and disturbance to neighbours, with these harms not outweighed by the benefits of providing accessible accommodation for a dependent relative.

What the Inspector cited

Development plan policies: Policy D3 of the London Plan (2021)Policy DMHD 2 of the Hillingdon Local Plan: Part Two - Development Management Policies (2020)Policy D6 of The London Plan (2021)Policy DMHB 11 of the Hillingdon Local Plan: Part Two - Development Management Policies (2020)Policy D7 of the London Plan (2021)

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.

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The decision letter

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More decisions in London Borough of Hillingdon

The authority’s record since 2016 · every decision in 2025

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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.