22 Derwent Crescent, Stanmore, Harrow, HA7 2NF Data via plota.co.uk

Refused PL/1879/26 - Certificate of Lawful Development Proposed
DemolitionExtensions & alterations
Council
Harrow 4.9/10
Date received
15 Jul 2026
Decision date
13 Sept 2026
Postcode
HA7 2NF
Type
Certificate of Lawful Development Proposed

Description

Certificate of Lawful Development (Proposed): Single storey rear extension; external alterations (demolition of rear extension) Data via plota.co.uk

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Last checked

How this decision compares

Decided in 60 days from validation, 10 days slower than Harrow's median of 50 for lawful development certificates. Refused, as 15% of lawful development certificates here are.

84%decided within 8 weeks
85%approved
19,896decided in the last year

Plota live figures for lawful development certificates decided across the UK in the last twelve months, from validation; too few recent lawful development certificates 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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Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
87 Wetheral Drive, Stanmore, Harrow, HA7 2HH
Single storey front extension incorporating front porch; conversion of garage to habitabl…
PL/1744/25
2025 Approved
3 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single Storey Rear Extension
PL/1592/25
2025 Approved
87 Wetheral Drive, Stanmore, Harrow, HA7 2HH
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.85 metre…
PL/1269/25
2025 Approved
106 Wetheral Drive, Stanmore, Harrow, HA7 2HJ
Conversion of garage to habitable room, Replace garage door with window in front elevatio…
PL/0144/25
2024 Approved
2 St Andrews Close, Stanmore, Harrow, HA7 2NR
Front porch, Conversion of garage to habitable room, Single storey rear extension, Raised…
PL/2710/24
2024 Refused
54 Derwent Crescent, Stanmore, Harrow, HA7 2NF
Rear dormer with Juliet balcony; three rooflights to front roof slope
PL/1670/24
2024 Approved
5 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single storey front extension incorporating front porch; conversion of garage into habita…
PL/1701/24
2024 Approved
5 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single storey front extension incorporating porch; conversion of garage into habitable ro…
PL/0760/24
2024 Approved
5 St Andrews Close, Stanmore, Harrow, HA7 2NR
Front porch; single and two storey side to rear extensions (Demolition of attached garage)
PL/0503/24
2024 Approved
2 St Andrews Close, Stanmore, Harrow, HA7 2NR
Front porch; conversion of garage into habitable room
PL/0457/24
2023 Approved
54 Derwent Crescent, Stanmore, HA7 2NF
Single storey front extension incorporating porch; single and two storey side to rear ext…
P/1093/23
2023 Refused
3 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single storey rear extension: 6.00 metres deep, 2.72 metres maximum height and 2.72 metre…
P/0508/23/PRIOR
2022 Approved
3 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single storey rear extension; external alterations
P/4256/22
2022 Approved
33 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single storey front extension; single storey rear extension; first floor rear extension…
P/3913/22
2022 Approved
33 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single storey rear extension: 6.00 metres deep, 3.50 metres maximum height and 3.00 metre…
P/3928/22/PRIOR
2022 Refused
3 Derwent Crescent, Stanmore, Harrow, HA7 2NE
Single storey rear extension; external alterations
P/3518/22
2022 Approved
128 Wetheral Drive, Stanmore, Harrow, HA7 2HJ
Single storey front extension incorporating porch; single and two storey side to rear ext…
P/1672/22
2021 Approved
2 Derwent Crescent, Stanmore, HA7 2NF
Installation of canopy attached to existing single storey rear extension; detached outbui…
P/3968/21
2021 Approved
128 Wetheral Drive, Stanmore, Harrow, HA7 2HJ
Single storey front extension incoporating porch; single and two storey side to rear exte…
P/4727/21
2021 Approved
128 Wetheral Drive, Stanmore, Harrow, HA7 2HJ
Single storey rear extension: 6.00 metres deep, 3.70 metres maximum height and 3.00 metre…
P/4151/21/PRIOR
2017 Approved
8 Derwent Crescent, Stanmore, HA7 2NF
Single storey rear extension: extending 6 metres beyond the original rear wall 3 metres m…
P/1149/17
2016 Approved
8 Derwent Crescent, Stanmore, HA7 2NF
Single storey rear extension: extending 6 metres beyond the original rear wall 3.5 Metres…
P/4927/16
2016 Approved
11 Derwent Crescent, Stanmore, HA7 2NE
Single storey side extension; first floor side to rear extension; external alterations
P/3372/16
2016 Approved
91 Wetheral Drive, Stanmore, HA7 2HH
Single storey rear extension
P/2361/16
2016 Approved
12 St Andrews Close, Stanmore, HA7 2NR
Single storey front extension incorporating front porch part-single part-two storey side…
P/0472/16
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