Planning appeal decision
4 Swanland Road, North Mymms, Hatfield, AL9 7TG
Planning appeal 3329306 at 4 Swanland Road, North Mymms, Hatfield, AL9 7TG (Welwyn Hatfield Council) was dismissed on 11 April 2024 by Inspector Lock H, by written representations. The main issue, as the Inspector framed it: whether the proposal is inappropriate development in the Green Belt for the purposes of planning policy set out in the Framework and the development plan.
alterations to the existing roof to raise the ridge height, hip to half-hip extension, enlarge front and rear gable and installation of dormer windows to the front and rear roof slope
- Authority
- Welwyn Hatfield Council
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Lock H
- Postcode
- AL9 7TG
Main issues, as the Inspector framed them
- whether the proposal is inappropriate development in the Green Belt for the purposes of planning policy set out in the Framework and the development plan
- the effect on the openness of the Green Belt
- the effect on the appearance of the appeal property and the character of the area
- if the development is inappropriate, whether the harm by reason of inappropriateness, and any other harm, is clearly outweighed by other considerations so as to amount to the very special circumstances necessary to justify the development
What decided it
The proposal would result in disproportionate additions over and above the size of the original building, constituting inappropriate development in the Green Belt that is harmful by definition, and the harm is not clearly outweighed by other considerations.
What the Inspector cited
- Development plan policies
- Policy SADM 34Policy SP 9
- National Planning Policy Framework
- Paragraph 154
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


More decisions in Welwyn Hatfield
The authority’s record since 2016 · every decision in 2024
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- Dismissed9 September 20266010292Rose Cottage, Kentish Lane, Hatfield, AL9 6JP
- Dismissed28 May 2026600320349 The Ridgeway, Cuffley, Potters Bar, Hertfordshire, EN6 4BD
- Dismissed27 May 20266003536East Lodge, Judge's Hill, Northaw, Potters Bar, Hertfordshire, EN6 4NL
- Planning permission granted6 March 2026335467120 Ayot Green, Ayot St. Peter, Welwyn, AL6 9AB
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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