Planning appeal decision
58 Thornfield Road, Middlesbrough, TS5 5DB
Planning appeal 3355398 at 58 Thornfield Road, Middlesbrough, TS5 5DB (Middlesbrough Council *) was dismissed on 28 March 2025 by Inspector Armstrong N, by written representations. The main issue, as the Inspector framed it: Whether the proposed development would preserve or enhance the character or appearance of the Linthorpe Conservation Area.
the proposed removal of 3 existing defective timber window frames to the front elevation of the property and their replacement with new purpose-made PVCu timber replica window frames
- Authority
- Middlesbrough Council *
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Armstrong N
- Postcode
- TS5 5DB
Main issues, as the Inspector framed them
- Whether the proposed development would preserve or enhance the character or appearance of the Linthorpe Conservation Area
What decided it
The replacement of original timber windows with stained and leaded glass detailing with PVCu frames would harm the character and appearance of the Conservation Area, and the claimed public benefits of improved thermal efficiency do not outweigh this heritage harm.
What the Inspector cited
- Development plan policies
- CS5DC1
- National Planning Policy Framework
- Paragraph 215
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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What an account adds to this decision


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The authority’s record since 2016 · every decision in 2025
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- Allowed8 September 202660091322 Jesmond Avenue, Middlesbrough, TS5 5JY
- Allowed7 September 20266010461Footpath Outside 2 Benson Street, Middlesbrough, TS5 6JQ
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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