37 Cambridge Road, North Harrow, Harrow, HA2 7LA Data via plota.co.uk

PL/3308/25 - Householder Approved

Proposal

Single storey front extension incorporating porch, Single and two storey side to rear extension, Single storey rear extension, Alterations to the roof to form rear dormer, Roof lights in front roof slope, Raised patio to rear Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
19 Dec 2025
✓
Validated
5 Jan 2026
✓
Approved
2 Mar 2026

Approved on 2 Mar 2026 · Delegated decision · Last checked 1 Oct 2026

Site constraints 7

Flood zone 2, rivers and sea
Medium chance: between a 1 in 100 and 1 in 1,000 annual chance from rivers, or 1 in 200 to 1 in 1,000 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
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 ↗
Habitat network: Priority Rivers
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Flood defence 12 m away (natural high ground, designed for a 1 in 75 year flood); Inside the Harrow built-up area; Public transport access: PTAL 4 (good), TfL 2023, for the 100 m square; Town centre 61 m away: North Harrow.
Not affected
Not green belt · No listed building at the site · No scheduled monument at the site

Checked on 3 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 £580,000 in October 2016. Semi-detached house, freehold.

5 October 2016£580,000
12 April 2001£213,000

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

Building

Floor area84 m² (904 sq ft)
Energy ratingC (75 out of 100), could reach B
PropertySemi-detached house, 6 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in March 2025, 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
Householder
Postcode
HA2 7LA
Received
19 Dec 2025
Validated
5 Jan 2026
Ward
North Harrow
Case officer
Show
Target decision
2 Mar 2026
Decision
Grant Conditionally
Decision date
2 Mar 2026
Decision level
Delegated decision
Applicant
Show
Agent
KDB Building Designs Ltd

How this decision compares

Decided in 56 days from validation, about the council's usual 56 days. 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
2 Mar 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.