81 Norman Crescent, Pinner, Harrow, HA5 3QH Data via plota.co.uk

PL/2162/26 - Prior Notification - Larger Home Extension Approved

Proposal

Single storey rear extension: 6.00 metres deep, 3.80 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
12 Aug 2026
✓
Approved
10 Sept 2026

Approved on 10 Sept 2026 · Delegated decision · Last checked 30 Sept 2026

Site constraints 6

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 ↗
Scheduled monument about 97 m away: Grim's Ditch: section N of Blythwood House
Its setting is a consideration for work nearby.
Nationally important archaeology protected by the Secretary of State. Work that affects the monument or its setting is rarely permitted.
Historic England ↗
Also on the record
Conservation area about 60 m away: Pinnerwood Park Estate Conservation Area PART 1; Inside the Harrow built-up area; Public transport access: PTAL 1a (very poor), TfL 2023, for the 100 m square; Heritage at risk about 97 m away: Grim's Ditch: section north of Blythwood House.
Not affected
Outside flood zones 2 and 3 · Not green belt

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 £538,000 in May 2014. Semi-detached house, freehold.

21 May 2014£538,000

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

Building

Floor area95 m² (1,023 sq ft)
Energy ratingE (52 out of 100), could reach C
PropertySemi-detached house, 5 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in October 2013, 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
Prior Notification - Larger Home Extension
Postcode
HA5 3QH
Received
12 Aug 2026
Validated
12 Aug 2026
Ward
Pinner
Case officer
Show
Target decision
23 Sept 2026
Decision
Prior Approval not required
Decision date
10 Sept 2026
Decision level
Delegated decision
Applicant
Show
Agent
Your Architect Ltd

How this decision compares

Decided in 29 days from validation, 27 days faster than Harrow's median of 56 for extensions. Approved, as 78% of extensions here are.

84%decided within 8 weeks
78%approved
1,726decided 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
23 Sept 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.

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.