Planning appeal decision
Adastra House, 401-405 Nether Street, London, N3 1QG
Planning appeal 3272276 at Adastra House, 401-405 Nether Street, London, N3 1QG (London Borough of Barnet) was dismissed on 22 December 2021 by Inspector Nilsson A, by written representations. The main issue, as the Inspector framed it: Whether the appeal is within the powers of section 73 of the Town and Country Planning Act 1990.
demolition of existing building and construction of a six-storey detached building with a roof terrace plus basement parking for 19 cars to provide 140 sqm of class B1 office floorspace on the ground floor and 34no. self-contained residential flats on the upper floors, associated amenity space, refuse storage, cycle parking landscaping works. without complying with conditions attached to planning permission Ref 15/05632/FUL, dated 8 September 2015
- Authority
- London Borough of Barnet
- Appeal type
- minor · Planning Appeal
- Procedure
- Written Representations
- Development
- residential · Other minor developments
- Inspector
- Nilsson A
- Postcode
- N3 1QG
Main issues, as the Inspector framed them
- Whether the appeal is within the powers of section 73 of the Town and Country Planning Act 1990
What decided it
The proposed amendment to the plans would result in a material increase in office floorspace from 140.5 sqm to 326 sqm, which would fundamentally alter the description of development in the original permission and therefore exceed the powers available under section 73.
What the Inspector cited
- Development plan policies
- CS9DM17
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 London Borough of Barnet
The authority’s record since 2016 · every decision in 2021
- Dismissed28 May 2026600424515 Glebe Crescent, London, NW4 1BT
- Dismissed1 May 20266003427188 The Vale, London, NW11 8SR
- Allowed30 April 202660014415 Llanvanor Road, London, NW2 2AR
- Dismissed28 April 20266003357145 Cheviot Gardens, London, NW2 1QB
- Dismissed30 March 2026600094145 Holdenhurst Avenue, London, N12 0JA
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.
®