52 Downs Avenue, Pinner, Harrow, HA5 5AH

Pending PL/0802/26 - Certificate of Lawful Development Proposed
Extensions & alterations
Council
Harrow 5.4/10
Date received
23 Mar 2026
Postcode
HA5 5AH
Type
Certificate of Lawful Development Proposed

Description

Certificate of Lawful Development (Proposed): Alterations and extension to roof to form wrap-a-round end gables and rear dormer; rooflights in both side roof slopes

Get alerts nearby Council site ↗

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18 The Avenue, Rayners Lane, Pinner, Harrow, HA5 5BL

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Historical activity at this location

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

This property

Previous applications at this address

2025
Single storey front extension incorporating porch Single storey side to rear extension; E…
PL/3204/25
2025 Approved
Single storey rear extension: 5.00 metres deep, 3.60 metres maximum height and 2.74 metre…
PL/2690/25
Within ~100m

Nearby activity

2024 Approved
25 West Avenue, Rayners Lane, Pinner, Harrow, HA5 5BZ
Single storey rear extension: 5.00 metres deep, 3.15 metres maximum height and 3.00 metre…
PL/3390/24
2023 Approved
33 West Avenue, Rayners Lane, Pinner, Harrow, HA5 5BZ
Single storey rear extension: 5.00 metres deep, 3.10 metres maximum height and 3.00 metre…
PL/0687/23
2023 Withdrawn
33 West Avenue, Rayners Lane, Pinner, Harrow, HA5 5BZ
Single storey rear extension: 5.00 metres deep, 3.20 metres maximum height and 3.10 metre…
PL/0614/23
2023 Approved
29 Downs Avenue, Pinner, Harrow, HA5 5AQ
Single storey front extension; external alterations
P/2388/23
2023 Refused
29 Downs Avenue, Pinner, Harrow, HA5 5AQ
Single Storey Rear Extension: 6.00 metres deep, 3.50 metres maximum height, 3.00 metres h…
P/2172/23/PRIOR
2023 Approved
7 West Avenue, Pinner, HA5 5BZ
Single storey rear extension; alterations and extension to rear dormer; external alterati…
P/1366/23
2023 Withdrawn
16 The Glen, Rayners Lane, Pinner, Harrow, HA5 5AY
Alterations and extension to raise roof height to create habitable roofspace; rooflights…
P/1008/23
2022 Approved
37 West Avenue, Rayners Lane, Pinner, Harrow, HA5 5BZ
Conversion of garage into habitable room with alterations to front and side elevations; S…
P/3822/22
2022 Approved
4 West Avenue, Rayners Lane, Pinner, Harrow, HA5 5BY
Single storey front extension incorporating porch; single storey rear extension; alterati…
P/1614/22
2022 Refused
43 Downs Avenue, Pinner, Harrow, HA5 5AQ
Single storey rear extension: 8.00 metres deep, 3.50 metres maximum height and 3.00 metre…
P/1665/22/PRIOR
2022 Approved
7 West Avenue, Rayners Lane, Pinner, Harrow, HA5 5BZ
Single storey rear extension; alterations and extension to rear dormer; external alterati…
P/1365/22
2022 Refused
16 The Glen, Rayners Lane, Pinner, Harrow, HA5 5AY
Alterations and extension to create first floor level to bungalow to form two storey dwel…
P/0887/22
2021 Approved
9 West Avenue, Rayners Lane, Pinner, Harrow, HA5 5BZ
First floor rear extension
P/4280/21
2021 Approved
16 The Glen, Pinner, HA5 5AY
Alterations and extension to create first floor level to bungalow to form two storey dwel…
P/1176/21/5939
2021 Approved
26 The Glen, Rayners Lane, Pinner, Harrow, HA5 5AY
Single storey front extension; external alterations
P/3637/21
2021 Approved
26 The Glen, Pinner, HA5 5AY
Single storey front infill extension; new front entrance; rooflights in front and side ro…
P/3485/20/5875
2021 Refused
16 The Glen, Rayners Lane, Pinner, Harrow, HA5 5AY
Alterations and extension to create first floor level to bungalow to form two storey dwel…
P/1176/21
2021 Approved
50 Downs Avenue, Pinner, Harrow, HA5 5AH
Single storey rear extension
P/0111/21
2020 Approved
50 Downs Avenue, Pinner, Harrow, HA5 5AH
Single storey front extension incorporating front porch canopy; enlargement and installat…
P/3979/20
2020 Refused
26 The Glen, Rayners Lane, Pinner, Harrow, HA5 5AY
Single storey front infill extension; new front entrance; rooflights in front and side ro…
P/3485/20
2016 Approved
21 West Avenue, Pinner, HA5 5BZ
Single storey rear extension: extending 4.5 Metres beyond the original rear wall 3.2 Metr…
P/1874/16
2016 Approved
3 Downs Avenue, Pinner, HA5 5AQ
Conservatory at rear
P/1160/16
2016 Approved
26 West Avenue, Pinner, HA5 5BY
Conversion of garage into habitable room with alterations to front elevation
P/0727/16
2016 Approved
2 Downs Avenue, Pinner, HA5 5AH
Single storey front extension; single storey side to rear extension (demolition of attach…
P/0332/16
2016 Approved
36 West Avenue, Pinner, HA5 5BY
Front porch
P/0183/16
Harrow
Planning Authority Score
5.4/10
Average
#125 of 292 councils
Relevant to this application:
Householder decisions

Harrow is faster than most councils at deciding householder applications, ranking #88 out of 292. 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 performance
Based on MHCLG data, 2025
78%
Overall approval rate
Below avg (87%) #270 of 292
83%
Householder approved
Below avg (90%) #255 of 292
74%
Decided in 8 weeks
Above avg (64%) #88 of 292
31%
Extended time limit
Below avg (40%) #60 of 292
49%
Minor dwellings approved
136 decided (1-9 homes)
100%
Major dwellings approved
4 decided (10+ homes)
54%
Change of use approved
24 decided
1,316
Total decisions
287 refused in 2025
Source: MHCLG planning statistics · See full council rankings