9 Park Avenue London NW11 7SL Data via plota.co.uk
Proposal
Single storey rear extension with 1no. rooflight. Alterations to roof above kitchen. External level drop down with new steps. New terrace area with new garden retaining wall Data via plota.co.uk
Application progress
Approved on 2 Feb 2026 · Delegated Decision · Last checked 3 Oct 2026
Documents 25
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 17
Application forms 2
Consultation & comments 1
Associated applications 2
- Single storey rear extension with 1no. rooflight. Alterations to roof above kitchen. External level drop down with new steps.…
Conditions 1 variation sought
Site constraints 6
Checked on 2 November 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 £855,000 in November 2003. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
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Important details
- Council
- Barnet
- Application type
- Householder Application
- Postcode
- NW11 7SL
- Received
- 8 Dec 2025
- Validated
- 8 Dec 2025
- Ward
- Childs Hill
- Case officer
- Show
- Target decision
- 2 Feb 2026
- Decision
- Approve subject to conditions
- Decision date
- 2 Feb 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Simon Miller Architects Ltd
How this decision compares
Decided in 56 days from validation, 4 days slower than Barnet's median of 52 for extensions. Approved, as 75% of extensions here are.
Plota live figures for extensions decided by Barnet in the last twelve months, from validation. Barnet decision record →
Public comments
Last counted 3 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14540164
- Planning Portal ref
- PP-14540164
- Comments by
- 8 Jan 2026
- Site or press notice
- 18 Dec 2025
- Statutory expiry
- 2 Feb 2026
Historical activity at this location
28 previous applications on record - archival context, not part of the live application.
Previous applications at this address
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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9 Park Avenue London NW11 7SL
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