31a Cornwall Mews, Cornwall Road, Portsmouth, PO1 5AR

Planning appeal 6005611 at 31a Cornwall Mews, Cornwall Road, Portsmouth, PO1 5AR (Portsmouth City Council) was dismissed on 7 July 2026 by Inspector R Cahalane, by written representations. The main issue, as the Inspector framed it: the effect of the proposed development on the living conditions of the occupiers of Nos 2 and 4 Lincoln Road and No 25 Ariel Road, with particular regard to daylight/sunlight and outlook.

to increase height by 1540mm to utilise the loft space to create 2 no. one-bedroom flats with associated external alterations

Authority: Portsmouth City Council
Appeal type: Planning
Procedure: Written
Development: residential
Inspector: R Cahalane
Postcode: PO1 5AR

Main issues, as the Inspector framed them

the effect of the proposed development on the living conditions of the occupiers of Nos 2 and 4 Lincoln Road and No 25 Ariel Road, with particular regard to daylight/sunlight and outlook
the effect on the character and appearance of the surrounding area

What decided it

The significant and demonstrable harm to the daylight, sunlight and outlook of neighbouring occupiers outweighs the moderate benefits of providing two new housing units in a location with a housing shortfall.

The moderate benefits of providing two new housing units in a sustainable location with a significant housing shortfall were outweighed by the significant adverse impacts on neighbouring living conditions in terms of daylight, sunlight and outlook, assessed against Framework policies for well-designed places and high standards of amenity.

What the Inspector cited

Development plan policies: Policy PCS23 of the Portsmouth Plan (Portsmouth's Core Strategy) 2012
National Planning Policy Framework: Paragraph 49Paragraph 11Paragraph 195Paragraph 135

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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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.