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Dismissed3 November 20253369933

110 Guessens Road, Welwyn Garden City, AL8 6RS

Planning appeal 3369933 at 110 Guessens Road, Welwyn Garden City, AL8 6RS (Welwyn Hatfield Council) was dismissed on 3 November 2025 by Inspector Sims B, by written representations. The main issue, as the Inspector framed it: The effect the side extension would have on the character and appearance of No 110 Guessens Road itself and of the local street scene within the context of the surrounding Welwyn Garden City Conservation Area.

the erection of a first-floor side extension

Authority
Welwyn Hatfield Council
Appeal type
householder · Householder (HAS)
Procedure
Written Representations
Development
residential · Householder developments
Inspector
Sims B
Postcode
AL8 6RS

Main issues, as the Inspector framed them

  • The effect the side extension would have on the character and appearance of No 110 Guessens Road itself and of the local street scene within the context of the surrounding Welwyn Garden City Conservation Area

What decided it

The publicly visible crown roof would be a significant departure from the prevailing architectural form of the host dwelling and neighbouring similar properties, causing unacceptable harm to the character and appearance of the property and conservation area.

What the Inspector cited

Development plan policies
Policy SP9Policy SP15Policy SADM11

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 applied

The decision letter

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More decisions in Welwyn Hatfield

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

  1. Allowed6 October 20266012577
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  3. Dismissed9 September 20266010292
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  4. Allowed4 September 20266012516
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  5. Dismissed20 August 20266006744
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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.

In the app this decision sits on the map beside every appeal around it, with its letter to read and the main issues, policies and judgments cited picked out.