Planning appeal decision
Monks Spout Cottage, Glasshouse Hill, May Hill, GL17 0NN
Planning appeal 3300799 at Monks Spout Cottage, Glasshouse Hill, May Hill, GL17 0NN (Forest of Dean District Council) was dismissed on 28 November 2022 by Inspector Sargent J, by written representations. The main issue, as the Inspector framed it: Whether the works would harm the special architectural or historic interest of this Grade II listed building, and whether they would harm its significance as a designated heritage asset.
Erection of a replacement single-storey rear extension
- Authority
- Forest of Dean District Council
- Appeal type
- other · Listed Building Consent & Conservation Area Consent Appeal
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Sargent J
- Postcode
- GL17 0NN
Main issues, as the Inspector framed them
- Whether the works would harm the special architectural or historic interest of this Grade II listed building, and whether they would harm its significance as a designated heritage asset
What decided it
The increased size and solid roof of the proposed extension, when taken together, would result in a far more striking and substantial presence that would harm the significance of the listed building by obscuring its fundamental historic linear plan form.
The less-than-substantial (moderate) harm to the significance of the listed building was not outweighed by the environmental and usability benefits claimed, as these were to be expected given the age of the existing conservatory and did not constitute clear and convincing justification for the works.
What the Inspector cited
- Development plan policies
- Policy CSP1Policy AP5
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
Town Planner Pro holds this letter. The Appeals plan opens it and every other letter we hold, all of them searchable, with the main issues and what decided each case picked out. We do not show letters on the free site because they carry people’s names and addresses.
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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