20 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SF Data via plota.co.uk

Decided PL/1517/26 - Prior Notification - Larger Home Extension
Extensions & alterations
Council
Harrow 4.9/10
Date received
19 Jun 2026
Postcode
HA8 6SF
Type
Prior Notification - Larger Home Extension

Description

Single storey rear extension: 4.50 metres deep, 3.500 metres maximum height and 2.500 metres high to the eaves Data via plota.co.uk

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Last checked

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 ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
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

17 Jul 2026Refused

82 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SE

Two storey side extension; single and two storey rear extensions; alterations an...

PL/1811/26
18 Apr 2026Pending

41 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SD

Conversion of garage to habitable room; first floor side extension; side and rea...

PL/0814/26

Nearby new applications

10 Sept 2026Pending

24 Cloyster Wood, Stanmore, Edgware, Harrow, HA8 6RS

Single storey side and rear extensions (Part demolition of attached garage, side...

PL/2326/26
12 Aug 2026Pending

206 Whitchurch Lane, Edgware, Harrow, HA8 6QH

Vehicle access

PL/1619/26
11 Aug 2026Approved

37 Canons Drive, Edgware, Harrow, HA8 7RB

Canons Drive Conservation Area G1 cypress x 3 (rear garden, close to property an...

PL/1679/26
5 Aug 2026Pending

845 Honeypot Lane, Stanmore, HA7 1AR

Proposed mezzanine (first floor) rear extension

PL/2022/26
4 Aug 2026Pending

73 Howberry Road, Edgware, Harrow, HA8 6TD

Single storey rear extension: 7.50 metres deep, 3.40 metres maximum height and 3...

PL/2060/26
25 Jul 2026Pending

37A Whitchurch Gardens, Edgware, Harrow, HA8 6PF

Single storey outbuilding in rear garden (retrospective)

PL/1672/26

Historical activity at this location

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

Within ~100m

Nearby activity

2024 Approved
8 Howberry Road, Edgware, Harrow, HA8 6ST
Front porch; external alterations
PL/3331/24
2024 Approved
29 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Single storey rear extension (retrospective)
PL/1383/24
2024 Approved
31 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Single storey front extension; single storey side to rear extension; external alterations…
PL/0365/24
2023 Refused
31 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Single storey front extension; single storey side to rear extension; external alterations…
PL/0749/23
2023 Approved
31 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
First floor side and rear extensions together with subordinate hip roof.
PL/0633/23
2023 Approved
31 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form e…
PL/0576/23
2023 Refused
31 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form e…
P/2308/23
2023 Approved
31 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metre…
P/2554/23/PRIOR
2023 Refused
31 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metre…
P/2103/23/PRIOR
2022 Approved
54 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SF
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form e…
P/1483/22
2020 Approved
22 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SF
Single Storey Rear Extension: 6.00 metres deep, 3.20 metres maximum height, 2.80 metres h…
P/3255/20/PRIOR
2020 Approved
14 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SF
Single storey rear extension
P/2973/20
2019 Refused
1 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Single Storey Rear Extension: 5 metres deep, 3 metres maximum height, 3 metres high to th…
P/4437/19/PRIOR
2019 Approved
1 Cheyneys Avenue, Edgware, HA8 6SA
Alterations and extension to roof to form end gable; single storey front extension incorp…
P/1928/19/5617
2019 Refused
1 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Certificate of lawful development (proposed): Alterations to roof to form end gable and r…
P/3280/19
2019 Approved
1 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Single Storey Front Extension Incorporating Front Porch; Two Storey Side Extension; Singl…
P/2874/19
2019 Refused
1 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Certificate of lawful development (proposed): Alterations to roof to form end gable and r…
P/2516/19
2019 Refused
1 Cheyneys Avenue, Canons Park, Edgware, Harrow, HA8 6SA
Alterations and extension to roof to form end gable; single storey front extension incorp…
P/1928/19
2018 Approved
56 Cheyneys Avenue, Edgware, HA8 6SF
Single storey rear extension: extending 4 metres beyond the original rear wall 3.725 Metr…
P/2835/18/PRIOR
2016 Approved
18 Cheyneys Avenue, Edgware, HA8 6SF
Certificate of lawful development (proposed): alterations to roof to form end gable with…
P/5379/16
2016 Approved
18 Cheyneys Avenue, Edgware, HA8 6SF
Certificate of lawful development (proposed): alterations to roof to form end gable with…
P/4303/16
2016 Approved
25 Cheyneys Avenue, Edgware, HA8 6SA
First floor side to rear extension; external alterations
P/0957/16
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