Knoll Hill Cottage Knoll Lane, Corfe Mullen, Wimborne, BH21 3RF

Planning appeal 3370191 at Knoll Hill Cottage Knoll Lane, Corfe Mullen, Wimborne, BH21 3RF (Dorset) was dismissed on 20 November 2025 by Inspector Astley-Serougi B, by written representations. The main issue, as the Inspector framed it: whether the proposal would be inappropriate development in the Green Belt having regard to the National Planning Policy Framework and any relevant development plan policies.

replace outbuilding with single storey extension. Add dormer, move front porch, add raised decking, raise height of windows/doors on rear wing

Authority: Dorset
Appeal type: householder · Householder (HAS)
Procedure: Written Representations
Development: residential · Householder developments
Inspector: Astley-Serougi B
Postcode: BH21 3RF

Main issues, as the Inspector framed them

whether the proposal would be inappropriate development in the Green Belt having regard to the National Planning Policy Framework and any relevant development plan policies
the effect of the proposal on the openness of the Green Belt
whether other considerations clearly outweigh the harm to the Green Belt, and any other harm, so as to amount to very special circumstances

What decided it

The proposal would result in disproportionate additions to the original building when considered cumulatively with previous extensions, failing to meet the exception in NPPF paragraph 154(c) and constituting inappropriate development in the Green Belt for which very special circumstances do not exist.

What the Inspector cited

Development plan policies: Policy KS3Policy HE2Policy HE3
National Planning Policy Framework: Paragraph 153Paragraph 154Paragraph 155

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

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.

Appeals plan, £15 a month

With an account

What an account adds to this decision

43 other decided appeals within two kilometres of this site. In the app every dot opens its decision, and its letter wherever one was published, and you can draw your own site to see what has been decided around it.AllowedDismissedSplitThis decision

An appeal decision in the app, with the main issues, policies and judgments cited picked out beside the letter — Every letter, there to read. We pick out the main issues, the policies and the judgments cited, so you can work through the letter faster.

Searching the full text of appeal decision letters in the app — Search inside every letter. By words or by meaning, filtered by authority, outcome, appeal type and procedure, with every locatable decision on the map and the Inspector named on each.

Start your free trial

More decisions in Dorset

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

Dismissed29 October 20266010776
The Bothey, Clayford, Wimborne, BH21 7BJ
Dismissed2 October 20266012115
55, Boundary Lane, St Leonards and St Ives, BH24 2SE
Dismissed24 August 20266007369
38 Brook Lane, Corfe Mullen, BH21 3RD
Dismissed12 August 20266007277
Shady Glades, Long Lane, Wimborne, BH21 7AQ
Dismissed7 August 20266007075
The Ferns, Poole Road, Jubilee Cross, Lytchett Matravers, BH16 6AF

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.