149 Kenmore Avenue, Kenton, Harrow, HA3 8PB Data via plota.co.uk

PL/3344/25 - Prior Notification - Larger Home Extension Refused
Extensions & alterations

Proposal

Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.70 metres high to the eaves Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
23 Dec 2025
✗
Refused
3 Feb 2026
✓
Appeal allowed
10 Jul 2026

Refused on 3 Feb 2026 · Delegated decision · Last checked 19 Oct 2026

Documents 6

Decision & officer reports 2

PDF Decision Notice DN - PRICOM and PRIEXT PA REQREF · 3 Feb 2026 View ↗ PDF Officer Report Delegated Report · 29 Jan 2026 View ↗

Plans & drawings 3

PDF Site Plan Plans · 23 Dec 2025 View ↗ PDF Existing floor Plan(s) & Elevation(s) Plans · 23 Dec 2025 View ↗ PDF Proposed Floor Plans & Elevation(s) Plans · 23 Dec 2025 View ↗

Application forms 1

PDF Application Form Redacted Application Form (Redacted) · 23 Dec 2025 View ↗

All documents on the council site ↗

Site constraints 4

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 1a (very poor), TfL 2023, for the 100 m square; Designated open space 21 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 17 October 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 1

Last sold for £620,000 in February 2022. Semi-detached house, freehold.

25 February 2022£620,000

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

Building

Floor area113 m² (1,216 sq ft)
Energy ratingE (45 out of 100), could reach B
PropertySemi-detached house, 7 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in October 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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Other new applications on this street

16 Oct 2026Pending

275 Kenmore Avenue, Kenton, Harrow, HA3 8PD

Single storey rear extension: 6.00 metres deep, 3.82 metres maximum height and 2...

PL/2736/26
2 Oct 2026Pending

ELMGROVE PRIMARY SCHOOL AND NURSERY Kenmore Avenue, Kenton, Harrow, HA3 8LU

Erection of a new free standing fire evacuation lift enclosure.

PL/2619/26
26 Aug 2026Approved

44 Kenmore Avenue, Kenton, Harrow, HA3 8PJ

Certificate of lawful development (proposed): Single storey outbuilding in rear ...

PL/2194/26

Nearby new applications

19 Oct 2026Pending

Stuart Road, 5 Stuart Road, Wealdstone, Harrow, HA3 7RF

Change of use and regularisation of residential use of the rear ground-floor acc...

PL/2756/26
16 Oct 2026Pending

275 Kenmore Avenue, Kenton, Harrow, HA3 8PD

Single storey rear extension: 6.00 metres deep, 3.82 metres maximum height and 2...

PL/2736/26
15 Oct 2026Pending

71 Kingshill Avenue, Kenton, Harrow, HA3 8LA

Single and two storey side to rear extension; external alterations (demolition o...

PL/2660/26
7 Oct 2026Pending

1 Ivanhoe Drive, Kenton, Harrow, HA3 8QR

No.1: Single and two storey rear extension; alterations and extension to roof to...

PL/2585/26
28 Sept 2026Pending

1A Wykeham Road, Kenton, Harrow, HA3 8LL

Single storey side extension; single and two storey rear extension; front porch

PL/2549/26
16 Sept 2026Pending

Stuart Road, 5 Stuart Road, Wealdstone, Harrow, HA3 7RF

Installation of parcel locker and concrete base (retrospective)

PL/2457/26

Important details

Council
Harrow
Application type
Prior Notification - Larger Home Extension
Postcode
HA3 8PB
Received
23 Dec 2025
Validated
23 Dec 2025
Ward
Kenton West
Case officer
Show
Target decision
3 Feb 2026
Decision
Refused
Decision date
3 Feb 2026
Decision level
Delegated decision
Appeal
Allowed · 10 Jul 2026 · Written Representations · Inspectorate case 6007328 ↗
Applicant
Show
Agent
Details Matter Ltd

How this decision compares

Decided in 42 days from validation, 14 days faster than Harrow's median of 56 for extensions. Refused, as 21% of extensions here are.

80%decided within 8 weeks
79%approved
1,936decided 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
3 Feb 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
159 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Single storey rear extension: 6.00 metres deep, 3.40 metres maximum height and 3.00 metre…
PL/2572/25
2025 Refused
155 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Outbuilding at rear for use as gym/storage/wc
PL/2066/25
2025 Approved
211 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Single storey rear extension: 4.00 metres deep, 3.35 metres maximum height and 2.85 metre…
PL/0789/25
2024 Approved
126 Kenmore Avenue, Kenton, Harrow, HA3 8PP
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metre…
PL/1208/24
2023 Approved
179 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Conversion of dwelling house into two flats (2x1 Bed); single storey rear extension; sepa…
PL/0291/23
2023 Approved
179 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Single storey rear extension: 6.00 metres deep, 3.50 metres maximum height and 3.00 metre…
P/2416/23/PRIOR
2023 Approved
161 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metre…
P/1823/23/PRIOR
2022 Approved
140 Kenmore Avenue, Kenton, Harrow, HA3 8PP
Single storey rear extension: 6.00 metres deep, 3.28 metres maximum height and 3.00 metre…
P/0415/22/PRIOR
2021 Approved
207 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Single Storey Rear Extension: 6.00 metres deep, 3.00 metres maximum height, 3.00 metres h…
P/3690/21/PRIOR
2021 Approved
140 Kenmore Avenue, Kenton, Harrow, HA3 8PP
Single storey outbuilding in rear garden
P/2890/21
2019 Refused
135 Kenmore Avenue, Kenton, Harrow, HA3 8PB
Conversion of detached garage in rear garden to self contained unit (granny annexe); sing…
P/1548/19
2019 Approved
110 Kenmore Avenue, Kenton, Harrow, HA3 8PW
Single Storey Rear Extension: 4.5 metres deep, 3.2 metres maximum height, 2.95 metres hig…
P/2857/19/PRIOR
2018 Approved
130 Kenmore Avenue, Harrow, HA3 8PP
Single storey rear extension: extending 6 metres beyond the original rear wall 3.18 Metre…
P/2998/18/PRIOR
2018 Approved
106 Kenmore Avenue, Harrow, HA3 8PW
Single storey rear extension: extending 6 metres beyond the original rear wall 3.2 Metres…
P/1933/18/PRIOR
2018 Approved
104 Kenmore Avenue, Harrow, HA3 8PW
Single storey rear extension extending 6 metres beyond the original rear wall 3.8 Metres…
P/1449/18/PRIOR
2017 Approved
127 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 3 metres m…
P/5303/17/PRIOR
2017 Approved
127 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 4 metres m…
P/4851/17/PRIOR
2016 Approved
143 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 4 metres m…
P/5626/16
2017 Approved
189 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 3 metres m…
P/3508/17/PRIOR
2017 Approved
185 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 4 metres m…
P/3624/17/PRIOR
2017 Approved
185 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 4 metres m…
P/3198/17/PRIOR
2017 Approved
185 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 4 metres m…
P/2871/17/PRIOR
2016 Approved
169 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 3.18 Metre…
P/4047/16
2016 Approved
171 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 3.25 Metre…
P/2732/16
2016 Approved
135 Kenmore Avenue, Harrow, HA3 8PB
Single storey rear extension: extending 6 metres beyond the original rear wall 3.39 Metre…
P/1687/16
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
Source: MHCLG planning statistics · See full council rankings

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.