17 Chartley Avenue, Stanmore, Harrow, HA7 3RA Data via plota.co.uk
Proposal
6m rear extension Data via plota.co.uk
Application progress
Refused on 21 Aug 2026 · Delegated decision · Last checked 30 Sept 2026
Documents 7
Decision & officer reports 2
Plans & drawings 4
Application forms 1
Site constraints 5
Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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 £255,000 in February 2006. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Every application in Harrow - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Harrow
- Application type
- Prior Notification - Larger Home Extension
- Postcode
- HA7 3RA
- Received
- 10 Jul 2026
- Validated
- 10 Jul 2026
- Ward
- Stanmore
- Case officer
- Show
- Target decision
- 21 Aug 2026
- Decision
- Refused
- Decision date
- 21 Aug 2026
- Decision level
- Delegated decision
- Applicant
- Show
- Agent
- Banyan Tree Architects Ltd
How this decision compares
Decided in 42 days from validation, 14 days faster than Harrow's median of 56 for extensions. Refused, as 22% of extensions here are.
Plota live figures for extensions decided by Harrow in the last twelve months, from validation. Harrow decision record →
Consultation & key dates
- Statutory expiry
- 21 Aug 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Harrow ranks #115 out of 296 councils for householder decision speed. Harrow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 83% 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.
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17 Chartley Avenue, Stanmore, Harrow, HA7 3RA
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