18 Birchmead Avenue, Pinner, Harrow, HA5 2BG Data via plota.co.uk

Pending PL/1703/26 - Householder
DemolitionExtensions & alterations
Council
Harrow 4.9/10
Date received
1 Jul 2026
Postcode
HA5 2BG
Type
Householder

Description

Single storey side to rear extension; single and two storey rear extension; alterations and extension to roof to form end gable; rear dormer; three rooflights in front roof slope; external alterations (demolition of detached garage and outbuilding) 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 75.

Day 75, past the statutory target. 93% of householder applications in Harrow are decided within thirteen weeks, which runs to 30 Sept 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 24 Aug 2026.

Day 7519 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 →

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 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 Aug 2026Pending

70 Birchmead Avenue, Pinner, Harrow, HA5 2BH

Certificate Of Lawful Development (Proposed): Rear dormer; three rooflights in f...

PL/2243/26

Nearby new applications

11 Sept 2026Pending

7 Sweetmans Avenue, Pinner, Harrow, HA5 3NS

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

PL/2156/26
27 Aug 2026Pending

70 Birchmead Avenue, Pinner, Harrow, HA5 2BH

Certificate Of Lawful Development (Proposed): Rear dormer; three rooflights in f...

PL/2243/26
13 Aug 2026Approved

35 Rochester Drive, Pinner, Harrow, HA5 1DA

TPO No. 319 Rochester Drive (No.1) Pinner T5 (T1) Oak (rear garden): Remove dead...

PL/1645/26
13 Aug 2026Pending

23 DAYMER GARDENS EASTCOTE PINNER

Variation of Condition 2 (approved plans) of planning permission ref. 45997/APP/...

45997/APP/2026/2024
11 Aug 2026Pending

52 Westbury Lodge Close, Pinner, Harrow, HA5 3FG

Single storey rear extension; conversion of garage to habitable room with instal...

PL/2127/26
8 Aug 2026Approved

54 High View, Pinner, Harrow, HA5 3PB

TPO No. 392 Cuckoo Hill Drive (No.2) Pinner T8 Scots pine (rear garden): Extensi...

PL/1493/26

Historical activity at this location

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

This property

Previous applications at this address

2025
Certificate of Lawful Development (Proposed): Alterations and extension to roof to form e…
PL/2962/25
2025
Single storey rear extension: 5.34 metres deep, 3.66 metres maximum height and 3.00 metre…
PL/2957/25
2020 Withdrawn
INVALID
P/1675/20
2019 Approved
Single storey side to rear extension; external alterations (demolition of attached garage)
P/2955/19
2019 Withdrawn
Invalid
P/3588/19
Within ~100m

Nearby activity

2023 Approved
49 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
T12 Lawson Cypress (front garden): Lift to 2.5m. Becoming too large for small front garde…
PL/0085/23
2023 Approved
8 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Infill of windows and door in front and side elevations; installation and replacement of…
P/2460/23
2023 Approved
71 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
Single storey rear extension; first floor rear infill extension; external alterations
P/2185/23
2023 Approved
71 Cuckoo Hill Road, Pinner, HA5 1AU
Single storey front to side link extension; single storey rear extension; first floor rea…
P/1354/23
2023 Approved
59 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
Conversion of garage into habitable room; external alterations
P/0743/23
2022 Approved
59 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
Single Storey Rear Extension: 6.00 metres deep, 4.00 metres maximum height, 3.00 metres h…
P/4233/22/PRIOR
2022 Approved
21 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Replacement of pitched roof with a flat roof over existing single storey rear extension…
P/1824/22
2021 Approved
16 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Single storey side extension; single and two storey rear extension; single storey rear ex…
P/2948/21
2021 Approved
25 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Single storey rear extension: 4.00 metres deep, 3.66 metres maximum height and 2.46 metre…
P/3722/21/PRIOR
2021 Approved
26 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Alterations and extension to roof to form end gable; rear dormer; two rooflights in front…
P/2811/21
2021 Withdrawn
16 Birchmead Avenue, Pinner, Harrow, HA5 2BG
INVALID - RETROSPECTIVE APPLICATION Ground floor - Rear and side extension plus internal…
P/3193/21
2020 Refused
53 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
Detached single storey dwellinghouse; Landscaping; Refuse and Cycle Storage
P/1846/20
2020 Approved
28 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Single storey side and rear extensions; front porch; front dormer; pitched roof to side d…
P/1673/20
2020 Approved
43 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
Single storey rear extension
P/2611/20
2020 Approved
5 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Single Storey Rear Extension: 4 metres deep, 3.590 metres maximum height and 2.378 metres…
P/1352/20/PRIOR
2019 Approved
16 Birchmead Avenue, Pinner, Harrow, HA5 2BG
Single and two storey rear extension;conversion of garage to habitable room; external alt…
P/4750/19
2019 Approved
65 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
Single Storey Rear Extension: 5 metres deep, 4 metres maximum height, 2.76 metres high to…
P/2612/19/PRIOR
2019 Approved
65 Cuckoo Hill Road, Pinner, HA5 1AU
Pitched roof over existing garage incorporating side canopy; single storey rear extension…
P/1816/19
2019 Approved
61 Cuckoo Hill Road, Pinner, Harrow, HA5 1AU
Single storey rear extension; conversion of garage to habitable room with installation of…
P/1348/19
2018 Approved
77 Cuckoo Hill Road, Pinner, HA5 1AU
Single storey rear extension; external alterations
P/1024/18
2017 Approved
51 Cuckoo Hill Road, Pinner, HA5 1AU
Excavation to create basement level single storey rear extension raised patio alteration…
P/4076/17
2017 Approved
65 Cuckoo Hill Road, Pinner, HA5 1AU
Pitched roof over existing garage incorporating side canopy; single storey rear extension
P/3991/17
2017 Approved
24 Birchmead Avenue, Pinner, HA5 2BG
Alterations to roof to form end gable and rear dormer; installation of three rooflights i…
P/2858/17
2016 Approved
49 Cuckoo Hill Road, Pinner, HA5 1AU
T4 lawson cypress (front): reduce to previous pruning points and reshape t10 liquidambar…
P/4363/16
2016 Approved
3 Birchmead Avenue, Pinner, HA5 2BG
Single storey side extension; first floor extension to extend from a single storey dwelli…
P/0752/16
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