Planning appeal decision
50 St. Martins Approach, Ruislip, HA4 7QQ
Planning appeal 3296373 at 50 St. Martins Approach, Ruislip, HA4 7QQ (London Borough of Hillingdon) was allowed on 9 August 2022 by Inspector Brooker M, by written representations. The main issue, as the Inspector framed it: Whether the proposal would constitute a separate unit of residential accommodation rather than an ancillary use; and if so, the effect on living conditions of occupiers of the annex and host dwellings with regard to internal space and outdoor private space, flood risk, character and appearance; and the effect on car parking.
Detached annexe for an elderly relative
- Authority
- London Borough of Hillingdon
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Brooker M
- Postcode
- HA4 7QQ
Main issues, as the Inspector framed them
- Whether the proposal would constitute a separate unit of residential accommodation rather than an ancillary use; and if so, the effect on living conditions of occupiers of the annex and host dwellings with regard to internal space and outdoor private space, flood risk, character and appearance; and the effect on car parking
What decided it
The limited size, scale of facilities, and proximity of the annexe to the host dwelling, combined with the appellant's undertaking to restrict use to purposes ancillary to the main dwelling secured by condition, meant the proposal would not constitute a separate residential unit and would not adversely affect living conditions.
What the Inspector cited
- Development plan policies
- Policy DMHD 2Policy DMHB 11Policy DMHB 12Policy DMT 6
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


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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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