Planning appeal decision
2 Carteret Close, Willen, Milton Keynes, MK15 9LD
Planning appeal 3374551 at 2 Carteret Close, Willen, Milton Keynes, MK15 9LD (Milton Keynes Council) was dismissed on 10 November 2025 by Inspector Marshall E, by written representations. The main issue, as the Inspector framed it: The impact of the first-floor side extension on the character and appearance of the existing building and the visual amenity of the street scene and surrounding area.
demolition of the existing rear conservatory and the erection of a single storey rear and side extension with roof lights. First floor side and rear extension above existing garage with rooflights
- Authority
- Milton Keynes Council
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Marshall E
- Postcode
- MK15 9LD
Main issues, as the Inspector framed them
- The impact of the first-floor side extension on the character and appearance of the existing building and the visual amenity of the street scene and surrounding area
What decided it
The first-floor side extension would be visually intrusive, bulky and out of character with the consistent street scene design, contrary to local design policies.
What the Inspector cited
- Development plan policies
- Plan:MK 2016 to 2031 Policy D1Plan:MK 2016 to 2031 Policy D2Plan:MK 2016 to 2031 Policy D3Campbell Park Neighbourhood Development Plan Design Policy 1
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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