12 Whitehall Road, Harrow On The Hill, Harrow, HA1 3AJ Data via plota.co.uk

PL/2825/26 - Certificate of Lawful Development Proposed Pending Consideration

Proposal

Certificate of lawful development (proposed): Repair works to front elevation bay window Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
25 Oct 2026
✓
Validated
26 Oct 2026
Decision
Expected by 21 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 21 Dec 2026, from Harrow's recent extensions.

Site constraints 5

Harrow on-the-Hill / Roxborough Park and The Grove conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
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 5 (very good), TfL 2023, for the 100 m square; Metropolitan Open Land 86 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 4 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 2

Last sold for £463,000 in December 2023. Semi-detached house, leasehold.

More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.

15 December 2023£463,000
5 May 1999£92,000Flat or maisonette

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area72 m² (775 sq ft)
Energy ratingD (55 out of 100), could reach C
PropertySemi-detached flat, 4 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in February 2015, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Council
Harrow
Application type
Certificate of Lawful Development Proposed
Postcode
HA1 3AJ
Received
25 Oct 2026
Validated
26 Oct 2026
Ward
Harrow on the Hill
Case officer
Show
Target decision
21 Dec 2026
Decision level
Schedule 1 - Delegated
Applicant
Show

Decision outlook

Day 16 of the 56-day target. Harrow usually decides extensions by day 56.

Day 1640 days to the 56-day target
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
21 Dec 2026
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

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

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.