Planning appeal decision
12 Highfield Farm Mangrove Lane, Hertford, SG13 8QJ
Planning appeal 3324542 at 12 Highfield Farm Mangrove Lane, Hertford, SG13 8QJ (East Hertfordshire District Council) was dismissed on 11 December 2023 by Inspector James A, by written representations. The main issue, as the Inspector framed it: whether the proposed development would be inappropriate development in the Green Belt having regard to the National Planning Policy Framework and any relevant development plan policies.
single storey rear extension
- Authority
- East Hertfordshire District Council
- Appeal type
- householder · Householder (HAS)
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- James A
- Postcode
- SG13 8QJ
Main issues, as the Inspector framed them
- whether the proposed development 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 proposed development on the openness of the Green Belt
- if the proposal is inappropriate development, would the harm by reason of inappropriateness, and any other harm, be clearly outweighed by other considerations as to amount to the very special circumstances required to justify the development
What decided it
The cumulative effect of existing and proposed extensions would result in a 133% increase in floorspace over the original building, constituting disproportionate additions that cannot be justified by the other considerations advanced.
What the Inspector cited
- Development plan policies
- Policy GBR1Policy DES4Policy HOU11
- National Planning Policy Framework
- Paragraph 148Paragraph 149
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


More decisions in East Hertfordshire District Council
The authority’s record since 2016 · every decision in 2023
- Allowed28 October 20266008487The Ranch House, Amwell Hill, Great Amwell, Ware, SG12 9QZ
- Allowed14 October 2026601275023 Bishops Road, Tewin Wood, Tewin, AL6 0NP
- Dismissed28 September 20266006224Land Near Fanshawes Ware Park, Ware, SG12 0DX
- Dismissed25 September 20266006716Little Orchard, London Road, Spellbrook, Hertfordshire, CM23 4BA
- Notice upheld3 July 20263342403Brookfield Farm Barns, West End Road, Wormley West End, Broxbourne, Hertfordshire, EN10 7QN
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.
®