Planning appeal decision
Slip Cottage, Slip Lane, Old Knebworth, Knebworth, SG3 6QG
Planning appeal 3294232 at Slip Cottage, Slip Lane, Old Knebworth, Knebworth, SG3 6QG (North Hertfordshire District Council) was dismissed on 11 January 2023 by Inspector Harding C, by written representations. The main issue, as the Inspector framed it: whether the development would be inappropriate development in the Green Belt having regard to the National Planning Policy Framework and any relevant development plan policies.
erection of a detached dwelling-house
- Authority
- North Hertfordshire District Council
- Appeal type
- minor · Planning Appeal
- Procedure
- Written Representations
- Development
- residential · Minor Dwellings
- Inspector
- Harding C
- Postcode
- SG3 6QG
Main issues, as the Inspector framed them
- whether the development would be inappropriate development in the Green Belt having regard to the National Planning Policy Framework and any relevant development plan policies
- whether the proposed development would be situated in an appropriate location having regards to the local development strategy
What decided it
The proposed development would constitute inappropriate development in the Green Belt causing substantial harm to openness, and this harm was not clearly outweighed by other considerations including rural housing need.
What the Inspector cited
- Development plan policies
- Policy SP5Policy SP2
- National Planning Policy Framework
- Paragraph 149Paragraph 11
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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