24 Cannon Lane, Pinner, Harrow, HA5 1HL Data via plota.co.uk

Pending PL/0920/26 - Householder
DemolitionExtensions & alterations
Council
Harrow 4.9/10
Date received
23 May 2026
Postcode
HA5 1HL
Type
Householder

Description

Single and two storey side to rear extensions; attached garage; rear dormer; external alterations (Demolition of porch canopy, side extension, and detached garage) Data via plota.co.uk

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Last checked

Decision outlook

Plota predicted a decision around 14 Sept 2026; it is now day 114.

Day 114, past the statutory target. 93% of householder applications in Harrow are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 24 Aug 2026.

Day 11458 days past the 56-day target
71%decided within 8 weeks
90%approved
31,203decided in the last year

Plota live figures for householder applications decided across the UK in the last twelve months, from validation; too few recent householder applications in Harrow to go on. Harrow decision record →

Associated applications 2

Site constraints 3

Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 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 ↗
Also on the record
Inside the Harrow built-up area.
Not affected
Not green belt · No scheduled monument at the site

Checked on 11 September 2026. 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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Other new applications on this street

27 Jun 2026Decided

219 Cannon Lane, Pinner, Harrow, HA5 1JA

Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 3...

PL/1745/26
11 Jun 2026Approved

130 Cannon Lane, Pinner, Harrow, HA5 1HR

Single storey front and side extension incorporating porch; external alterations...

PL/1553/26
21 May 2026Approved

132 Cannon Lane, Pinner, Harrow, HA5 1HR

Single storey front extension incorporating porch; Conversion of garage to self ...

PL/1351/26
30 Mar 2026Approved

GESHER SCHOOL Cannon Lane, Pinner, Harrow, HA5 1JF

Single storey detached classroom building with access steps and Stannah lowliser...

PL/0902/26

Nearby new applications

11 Sept 2026Pending

66 Marsh Road, Pinner, Harrow, HA5 5NQ

Two storey side extension; single storey side to rear extension; external altera...

PL/2145/26
10 Sept 2026Pending

76 Marsh Road, Pinner, Harrow, HA5 5NQ

Certificate of lawful development (proposed): Installation of two external air-s...

PL/2341/26
9 Sept 2026Pending

24 Cannon Lane, Pinner, Harrow, HA5 1HL

Details pursuant to conditions 5 (Precautionary Working Method Statement) and 6 ...

PL/2334/26
5 Sept 2026Pending

45 East Towers, Pinner, Harrow, HA5 1TN

Single storey front extension incorporating front porch; single storey side to r...

PL/1869/26
28 Aug 2026Pending

19 West End Avenue, Pinner, Harrow, HA5 1BH

Certificate of Lawful Development (Proposed): Alterations to roof to form side m...

PL/2287/26
27 Aug 2026Approved

16 Cecil Park, Pinner, Harrow

Cecil Park Conservation Area T1 Cherry: In decline. Decay at base and in trunk. ...

PL/2228/26

Historical activity at this location

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

This property

Previous applications at this address

2025 Withdrawn
Single storey front extension, Relocation of entrance door to front elevation, Two storey…
PL/0935/25
Within ~100m

Nearby activity

2025 Approved
14 Cannon Lane, Pinner, Harrow, HA5 1HL
Single storey rear extension
PL/0807/25
2024 Approved
13 Vale Croft, Pinner, Harrow, HA5 1HJ
Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 3.00 metre…
PL/3216/24
2024 Approved
20 Cannon Lane, Pinner, Harrow, HA5 1HL
Single storey side extension, Single and two storey rear extension (Demolition of detache…
PL/2391/24
2024 Approved
49 Cannon Lane, Pinner, Harrow, HA5 1HN
Single storey rear extension: 5.00 metres deep, 3.50 metres maximum height and 3.00 metre…
PL/1301/24
2024 Approved
53 Cannon Lane, Pinner, Harrow, HA5 1HN
Single storey rear extension: 3.29 metres deep, 4.00 metres maximum height and 3.00 metre…
PL/1083/24
2024 Approved
9 Cannon Lane, Pinner, Harrow, HA5 1HH
Single storey rear extension: 4.00 metres deep, 3.25 metres maximum height and 3.00 metre…
PL/0635/24
2023 Approved
8 Cannon Lane, Pinner, Harrow, HA5 1HL
T7 Oak (front, near left boundary): Crown lift all round to give approx. 5m ground cleara…
PL/0287/23
2023 Refused
14 Cannon Lane, Pinner, Harrow, HA5 1HL
Single storey rear extension: 8.00 metres deep, 3.00 metres maximum height and 2.80 metre…
P/2552/23/PRIOR
2023 Refused
14 Cannon Lane, Pinner, Harrow, HA5 1HL
Single storey rear extension: 8.00 metres deep, 3.00 metres maximum height and 2.80 metre…
P/1703/23/PRIOR
2023 Approved
55 Cannon Lane, Pinner, Harrow, HA5 1HN
Front porch; single storey front, side and rear extension; external alterations (demoliti…
P/0087/23
2022 Approved
55 Cannon Lane, Pinner, Harrow, HA5 1HN
Single storey rear extension: 5.30 metres deep, 3.70 metres maximum height and 3.00 metre…
P/3259/22/PRIOR
2020 Approved
4 Vale Croft, Pinner, Harrow, HA5 1HJ
Single storey side to rear extension
P/4561/20
2020 Approved
34 Cannon Lane, Pinner, Harrow, HA5 1HL
Single storey front extension incorporating front porch; two storey side extension; singl…
P/3084/20
2020 Approved
57 Cannon Lane, Pinner, Harrow, HA5 1HN
Single storey rear conservatory extension
P/3399/20
2020 Refused
4 Vale Croft, Pinner, Harrow, HA5 1HJ
Single Storey Rear Extension: extending 5.99 metres beyond the original rear wall, 3.95 m…
P/3674/20/PRIOR
2020 Approved
20 Cannon Lane, Pinner, Harrow, HA5 1HL
T2 Silver Birch (rear garden): In decline. Fell and replace *see below
P/2570/20
2020 Approved
8 Cannon Lane, Pinner, Harrow, HA5 1HL
T7 Oak (front boundary): Crown Reduce back to previous points by removing 2m from all ove…
P/1569/20
2017 Approved
1 Vale Croft, Pinner, HA5 1HJ
Single storey rear extension: extending 3.50 Metres beyond the original rear wall 3.55 Me…
P/0653/17
2019 Approved
37 Cannon Lane, Pinner, Harrow, HA5 1HN
Single Storey Rear Extension: extending 3.85 metres beyond the original rear wall, 3 metr…
P/2520/19/PRIOR
2018 Approved
12 Cannon Lane, Pinner, HA5 1HL
Single storey detached dwelling at rear; refuse and cycle storage
P/4760/18
2016 Approved
8 Cannon Lane, Pinner, HA5 1HL
T7 oak (front garden): clear branches away from phone line (1m clearance) and remove plas…
P/1757/16
2016 Approved
5 Vale Croft, Pinner, HA5 1HJ
Single storey rear extension: extending 3.1 Metres beyond the original rear wall 3.975 Me…
P/1186/16
2016 Approved
41 Cannon Lane, Pinner, HA5 1HN
Single storey rear extension: extending 4 metres beyond the original rear wall 4 metres m…
P/0821/16
2016 Approved
8 Cannon Lane, Pinner, HA5 1HL
Single storey front extension; conversion of garage to habitable room
P/0445/16
2016 Approved
2 Vale Croft, Pinner, HA5 1HJ
Single storey rear extension: extending 6 metres beyond the original rear wall 3.1 Metres…
P/0203/16
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