4 Colmer Place, Harrow Weald, Harrow, HA3 6JW Data via plota.co.uk

Pending PL/2317/26 - Full Planning Application
Change of useExtensions & alterations
Council
Harrow 4.9/10
Date received
week of 21 Sept 2026
Postcode
HA3 6JW
Type
Full Planning Application

Description

Single storey side to rear extension; external alterations; conversion of dwellinghouse (C3) into a 6 person HMO (C4); refuse / cycle storage Data via plota.co.uk

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Last checked

Decision outlook

Plota predicts a decision around 16 Nov 2026, from Harrow's recent changes of use.

Day 13 of the 56-day target. Harrow usually decides changes of use by day 56.

Day 1343 days to the 56-day target
66%decided within 8 weeks
39%approved
249decided in the last year

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

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; Designated open space about 27 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 3 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 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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Nearby new applications

22 Sept 2026Pending

6 Greer Road, Harrow Weald, Harrow, HA3 6JF

Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3...

PL/2502/26
8 Sept 2026Pending

32 Weald Lane, Harrow Weald, Harrow, HA3 5EX

Certificate of lawful development (Existing): Use of the property as a small HMO...

PL/2383/26
13 Aug 2026Pending

3 Monro Gardens, Harrow Weald, Harrow, HA3 6HH

Single storey side to rear extension (demolition of garage and shed)

PL/2171/26
20 Aug 2026Pending

5 Clewer Crescent, Harrow Weald, Harrow, HA3 5QA

Certificate of Lawful Development (Existing): Single storey rear extension; exte...

PL/2223/26
24 Jul 2026Approved

72 Boxtree Road, Harrow Weald, Harrow, HA3 6TH

Certificate of Lawful Development (Proposed): Alterations and extension to roof ...

PL/1987/26
24 Jul 2026Approved

72 Boxtree Road, Harrow Weald, Harrow, HA3 6TH

Single storey front extension incorporating front porch; alteration of roof to s...

PL/1989/26

Historical activity at this location

28 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2024 Approved
Single storey side to rear extension; external alterations
PL/1339/24
2023 Refused
Single storey side extension to create (1 bed) bungalow; parking; bin and cycle stores
P/0187/23
2021 Withdrawn
INVALID
P/1874/21
Within ~100m

Nearby activity

2024 Approved
64 - 66 Boxtree Lane, Harrow Weald, Harrow, HA3 6JR
Conversion of detached dwelling into two semi-detached dwellings (1 X 4 bed and 1 X 2 bed)
PL/0247/24
2023 Approved
55 Boxtree Lane, Harrow Weald, Harrow, HA3 6JP
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metre…
P/0610/23/PRIOR
2023 Refused
82 Boxtree Lane, Harrow Weald, Harrow, HA3 6JN
Alterations and extension to roof to form end gable; two rooflights in front roofslope; w…
P/0144/23
2022 Refused
4 Blackwell Close, Harrow Weald, Harrow, HA3 6JY
Conversion of dwelling into two flats (1 X 1 bed and 1 X 2 bed); single storey rear exten…
P/3179/22
2021 Approved
1 Colmer Place, Harrow Weald, Harrow, HA3 6JW
Conversion of single storey side element into studio flat; external alterations; separate…
P/1919/21
2021 Approved
6a Colmer Place, Harrow Weald, Harrow, HA3 6JW
Single storey rear extension to ground floor flat; external alterations
P/2358/21
2021 Approved
29 Boxtree Lane, Harrow Weald, Harrow, HA3 6JP
Single storey rear extension: 6.00 metres deep, 2.90 metres maximum height and 2.80 metre…
P/2288/21/PRIOR
2020 Approved
31 Boxtree Lane, Harrow Weald, Harrow, HA3 6JP
Single Storey Side Extension (Demolition Of Garage)
P/3516/20
2020 Approved
31 Boxtree Lane, Harrow Weald, Harrow, HA3 6JP
Single storey rear extension: 6.00 metres deep, 3.10 metres maximum height and 2.92 metre…
P/3457/20/PRIOR
2020 Approved
12 Colmer Place, Harrow Weald, Harrow, HA3 6JW
Single storey rear extension; rear dormer; front porch; hard and soft landscaping; single…
P/2456/20
2019 Approved
13 Colmer Place, Harrow Weald, Harrow, HA3 6JW
Single storey rear extension; rear dormer; installation of two rooflights in front roofsl…
P/0867/19
2019 Approved
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY
Single storey rear extension; Alterations to first floor balcony door (Retrospective)
P/0544/19
2017 Approved
1 Colmer Place, Harrow Weald, Harrow, HA3 6JW
Conversion of dwelling into three flats; first floor side extension; single storey rear e…
P/5660/17
2017 Approved
11 Colmer Place, Harrow, HA3 6JW
Single storey rear extension; rear dormer; two rooflights in front roofslope to create ha…
P/2484/17
2017 Approved
62 Boxtree Lane, Harrow Weald, Harrow, HA3 6JR
First floor rear extension
P/2494/17
2017 Approved
62 Boxtree Lane, Harrow Weald, Harrow, HA3 6JR
Single storey side and rear extension; alteration to roof of existing single storey side…
P/1323/17
2016 Approved
62 Boxtree Lane, Harrow Weald, Harrow, HA3 6JR
Single storey rear extension; first floor rear extension
P/5760/16
2016 Approved
5 Blackwell Close, Harrow, HA3 6JY
Single storey rear extension
P/5441/16
2016 Approved
62 Boxtree Lane, Harrow Weald, Harrow, HA3 6JR
Single storey side and rear extension with two storey extension over side to house intern…
P/3758/16
2016 Approved
5 Blackwell Close, Harrow, HA3 6JY
Single storey rear extension
P/2847/16
2016 Approved
57 Boxtree Lane, Harrow Weald, Harrow, HA3 6JP
Single storey front extension incorporating front porch and two storey side extension
P/3131/16
2016 Approved
57 Boxtree Lane, Harrow Weald, Harrow, HA3 6JP
Single storey rear extension: extending 3.47 Metres beyond the original rear wall 2.95 Me…
P/3005/16
2016 Withdrawn
62 Boxtree Lane, Harrow Weald, Harrow, HA3 6JR
INVALID - Single storey side and rear extension with two storey extension over side to ho…
P/2127/16
2023 Refused
64 - 66 Boxtree Lane, Harrow Weald, Harrow, HA3 6JR
CERTIFICATE OF LAWFUL DEVELOPMENT(PROPOSED): Conversion of single dwelling into two dwell…
PL/0263/23
2021 Approved
1 Colmer Place, Harrow Weald, Harrow, HA3 6JW
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED):Alterations to roof, side and rear dormer wi…
P/4490/21
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