15 The Heights, Northolt, Harrow, UB5 4BW Data via plota.co.uk

PL/2281/25 - Prior Notification - Larger Home Extension Approved

Proposal

Single storey rear extension: 4.60 metres deep, 3.10 metres maximum height and 3.00 metres high to the eaves Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
1 Sept 2025
✓
Approved
10 Oct 2025

Approved on 10 Oct 2025 · Delegated decision · Last checked 7 Oct 2026

Site constraints 3

Air quality management area: Harrow AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
Inside the Harrow built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

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.

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Important details

Council
Harrow
Application type
Prior Notification - Larger Home Extension
Postcode
UB5 4BW
Received
1 Sept 2025
Validated
1 Sept 2025
Ward
Roxeth
Case officer
Show
Target decision
13 Oct 2025
Decision
Prior Approval not required
Decision date
10 Oct 2025
Decision level
Delegated decision
Applicant
Show

How this decision compares

Decided in 39 days from validation, 17 days faster than Harrow's median of 56 for extensions. Approved, as 78% of extensions here are.

81%decided within 8 weeks
78%approved
1,884decided in the last year

Plota live figures for extensions decided by Harrow in the last twelve months, from validation. Harrow decision record →

Consultation & key dates

Statutory expiry
13 Oct 2025
Harrow
Planning Authority Score
4.9/10
Below average
#153 of 296 councils
Relevant to this application:
Householder decisions

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.

One of the strictest councils
only 83% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Harrow decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #273 of 296
83%
Householder approved
Below avg (90%) #261 of 296
71%
Decided in 8 weeks
Above avg (63%) #115 of 296
33%
Extended time limit
Below avg (41%) #77 of 296
44%
Minor dwellings approved
133 decided (1-9 homes)
80%
Major dwellings approved
5 decided (10+ homes)
38%
Change of use approved
26 decided
1,330
Total decisions
298 refused in the year to March 2026