21B South Hill Avenue, Harrow, HA2 0NN Data via plota.co.uk
Proposal
Single storey front extension; replacement of existing flat roof with a pitched roof; external alterations; access, parking and landscaping Data via plota.co.uk
Application progress
Refused on 29 Jul 2026 · Delegated decision · Last checked 1 Oct 2026
Documents 18
Decision & officer reports 2
Statements & assessments 4
Plans & drawings 7
Application forms 2
Site constraints 4
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.
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
How this decision compares
Decided in 56 days from validation, about the council's usual 56 days. Refused, as 21% 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
- 29 Jul 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.
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21B South Hill Avenue, Harrow, HA2 0NN
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