136 Cannon Lane, Pinner, Harrow, HA5 1HR Data via plota.co.uk

PL/2552/26 - Householder Pending Consideration
Extensions & alterations

Proposal

Single storey front extension incorporating porch; single storey side extension; external alterations Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
28 Sept 2026
Decision
Expected by 23 Nov 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 23 Nov 2026, from Harrow's recent extensions.

Documents 3

Plans & drawings 2

PDF Proposed & existing Elevations Plans · 28 Sept 2026 View ↗ PDF Proposed & Existing Floor Plan(s) Plans · 28 Sept 2026 View ↗

Application forms 1

PDF Application Form redacted Application Form (Redacted) · 28 Sept 2026 View ↗

All documents on the council site ↗

Site constraints 2

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
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 29 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

9 Jun 2026Approved

130 Cannon Lane, Pinner, Harrow, HA5 1HR

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

PL/1553/26
15 May 2026Approved

132 Cannon Lane, Pinner, Harrow, HA5 1HR

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

PL/1351/26
16 Sept 2026Pending

20 Cannon Lane, Pinner, Harrow, HA5 1HL

Front porch; single storey side plant room extension; external alterations (Retr...

PL/2462/26
3 Sept 2026Pending

24 Cannon Lane, Pinner, Harrow, HA5 1HL

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

PL/2334/26

Nearby new applications

16 Sept 2026Pending

20 Cannon Lane, Pinner, Harrow, HA5 1HL

Front porch; single storey side plant room extension; external alterations (Retr...

PL/2462/26
3 Sept 2026Pending

24 Cannon Lane, Pinner, Harrow, HA5 1HL

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

PL/2334/26
31 Jul 2026Pending

7 Tewkesbury Avenue, Rayners Lane, Pinner, Harrow, HA5 5LQ

Certificate of Lawful Proposed Development: Conversion of garage to habitable ro...

PL/2055/26
14 Jul 2026Withdrawn

16 Lulworth Drive, Rayners Lane, Pinner, Harrow, HA5 1NE

Single storey rear extension; conversion of garage into habitable room; first fl...

PL/1894/26
28 Jul 2026Approved

121 Eastcote Road, Pinner, Harrow, HA5 1ET

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

PL/2014/26
9 Jul 2026Pending

45 East Towers, Pinner, Harrow, HA5 1TN

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

PL/1869/26

Important details

Council
Harrow
Application type
Householder
Postcode
HA5 1HR
Received
28 Sept 2026
Validated
28 Sept 2026
Ward
Pinner South
Case officer
Show
Target decision
23 Nov 2026
Decision level
Delegated decision
Applicant
Show
Agent
MKM Design & Construction Limited

Decision outlook

Day 7 of the 56-day target. Harrow usually decides extensions by day 56.

Day 749 days to the 56-day target
84%decided within 8 weeks
78%approved
1,672decided 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 Nov 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
89 Cannon Lane, Pinner, Harrow, HA5 1HP
Single storey front extension incorporating porch, Conversion of garage to habitable room…
PL/0025/25
2023 Approved
Pinner Chef, 86 Cannon Lane, Pinner, Harrow, HA5 1HR
Demolition of outbuildings and construction of a single-story rear extension and alterati…
P/2597/23
2023 Approved
24 Dawlish Drive, Pinner, Harrow, HA5 5LN
Conversion of garage into habitable room with alterations to front elevation and raising…
P/1911/23
2023 Approved
102 Cannon Lane, Pinner, Harrow, HA5 1HR
Single storey front extension incorporating porch; single storey rear extension; alterati…
P/0110/23
2022 Approved
5 Dawlish Drive, Pinner, Harrow, HA5 5LJ
Alterations and extension to roof; first floor side extension; alterations and extension…
P/0372/22
2022 Approved
32 Dawlish Drive, Pinner, Harrow, HA5 5LN
Single storey rear extension; conversion of garage to habitable room and storage area wit…
P/1137/22
2021 Approved
148 Cannon Lane, Pinner, Harrow, HA5 1HR
Single storey front extension incoporating porch; single storey rear extension; conversio…
P/4793/21
2021 Approved
108 Cannon Lane, Pinner, Harrow, HA5 1HR
Single storey front extension incorporating front porch; single storey side extension and…
P/3125/21
2021 Approved
5 Dawlish Drive, Pinner, Harrow, HA5 5LJ
Single storey rear extension: 6.00 metres deep, 3.47 metres maximum height and 3.00 metre…
P/3277/21/PRIOR
2021 Approved
108 Cannon Lane, Pinner, Harrow, HA5 1HR
Single Storey Rear Extension: 4.50 metres deep, 3.00 metres maximum height, 2.76 metres h…
P/3025/21/PRIOR
2021 Approved
12 Dawlish Drive, Pinner, Harrow, HA5 5LN
Single storey side to rear extension (demolition of attached garage, side to rear extensi…
P/2509/21
2021 Approved
22 Dawlish Drive, Pinner, Harrow, HA5 5LN
Single storey side to rear extension; conversion of garage into habitable room; external…
P/1999/21
2021 Refused
5 Dawlish Drive, Pinner, Harrow, HA5 5LJ
Single storey rear extension: 6.00 metres deep, 3.47 metres maximum height and 3.00 metre…
P/2473/21/PRIOR
2021 Approved
32 Dawlish Drive, Pinner, Harrow, HA5 5LN
Single storey rear extension; Conversion of garage into habitable room and storage area…
P/1701/21
2020 Refused
148 Cannon Lane, Pinner, Harrow, HA5 1HR
Single storey front extension incorporating front porch; Single and two storey side exten…
P/2200/20
2020 Approved
148 Cannon Lane, Pinner, Harrow, HA5 1HR
Single storey rear extension: 5.00 Metres deep 3.32 Metres maximum height 3.00 Metres hig…
P/2182/20/PRIOR
2020 Withdrawn
148 Cannon Lane, Pinner, Harrow, HA5 1HR
Single storey rear extension: 6.0 Metres deep 3.32 Metres maximum height 3.00 Metres high…
P/1140/20/PRIOR
2020 Approved
11 Dawlish Drive, Pinner, Harrow, HA5 5LJ
Rear dormer; installation of two rooflights in front roofslope
P/0897/20
2019 Approved
11 Dawlish Drive, Pinner, Harrow, HA5 5LJ
Single storey front extension incorporating front porch; two storey side extension; singl…
P/3351/19
2019 Approved
122 Cannon Lane, Pinner, Harrow, HA5 1HR
Single storey front extension incorporating porch; single storey side to rear extension (…
P/2364/19
2017 Approved
10 Dawlish Drive, Pinner, HA5 5LN
Conversion of garage to room; extension to raise height of garage and side extension; ext…
P/0262/17
2016 Approved
91 Cannon Lane, Pinner, HA5 1HP
Single storey side/rear extension; conversion of garage to room with installation of wind…
P/5836/16
2016 Approved
96 Cannon Lane, Pinner, HA5 1HR
Single and two storey side extension single storey rear extension (demolition of attached…
P/4356/16
2016 Approved
67 Cannon Lane, Pinner, HA5 1HP
Single storey front extension; front porch
P/3220/16
2016 Approved
96 Cannon Lane, Pinner, HA5 1HR
Single storey rear extension: extending 6 metres beyond the original rear wall 3 metres m…
P/0602/16
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