48 Hillfield Avenue London NW9 6NX Data via plota.co.uk
Proposal
Single storey rear extension with 1no. rooflight Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision between 18 Nov 2026 and 29 Nov 2026, from Barnet's recent extensions.
Documents 8
Statements & assessments 2
Plans & drawings 3
Application forms 1
Site constraints 4
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Sales history 1
Last sold for £285,000 in April 2005. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Every application in Barnet - and every UK council - as a live feed, an API, or a bulk CSV export.
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Certificate of lawfulness for single-storey rear extension to dwellinghouse.
Important details
Decision outlook
Day 4 of the 56-day target. Barnet usually decides extensions by day 52.
Plota live figures for extensions decided by Barnet in the last twelve months, from validation. Barnet decision record →
Public comments
No public comments yet.
Last counted 6 Oct 2026
Consultation & key dates
- Alt. reference
- PLP-00010261
- Comments by
- 5 Nov 2026
- Site or press notice
- 15 Oct 2026
- Statutory expiry
- 30 Nov 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Barnet is faster than most councils at deciding householder applications, ranking #42 out of 296. Only 25% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Barnet is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
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48 Hillfield Avenue London NW9 6NX
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Comments are open until 5 Nov 2026