18 Charmian Avenue, Stanmore, Harrow, HA7 1LJ
Pending
PL/1336/26 - Householder
Description
Single storey rear extension; external alterations
Other new applications on this street
Nearby new applications
22 Derwent Crescent, Stanmore, Harrow, HA7 2NF
Certificate of lawful development (proposed): Conversion of garage into habitabl...
22 Derwent Crescent, Stanmore, Harrow, HA7 2NF
Single storey rear extension: 6.00 metres deep, 3.15 metres maximum height and 3...
20 Hiliary Gardens, Stanmore, Harrow, HA7 2NQ
Single storey rear extension; external alterations (part retrospective)
37 Moorhouse Road, Kenton, Harrow, HA3 9JD
(none)
59 Culver Grove, Stanmore, Harrow, HA7 2NJ
Single storey rear extension (Retrospective)
68 Kenmore Road, Kenton, Harrow, HA3 9EZ
Certificate of Lawful Development (Proposed): Single storey rear gazebo
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
Within ~100m
Nearby activity
2025
Withdrawn
1, 1 Clydesdale Avenue, Stanmore, Harrow, HA7 1LN
Single storey rear extension (retrospective)
2025
Withdrawn
1, 1 Clydesdale Avenue, Stanmore, Harrow, HA7 1LN
Conversion of garage into habitable room; external alterations (retrospective)
2024
Approved
2 Charmian Avenue, Stanmore, Harrow, HA7 1LJ
Single storey side extension; front porch; external alterations (demolition of attached g…
2024
Refused
2 Charmian Avenue, Stanmore, Harrow, HA7 1LJ
Single storey front extension incorporating front porch; single storey side extension; de…
2023
Approved
52 Charmian Avenue, Stanmore, Harrow, HA7 1LJ
Single storey side extension; External alterations (Demolition of attached garage at side)
2023
Approved
10 Clydesdale Avenue, Stanmore, Harrow, HA7 1LW
Single storey rear extension: 6.00 metres deep, 3.30 metres maximum height and 3.00 metre…
2022
Approved
37 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single Storey Rear Extension: 6.00 metres deep, 3.40 metres maximum height, 3.00 metres h…
2021
Approved
29 Clydesdale Avenue, Stanmore, Harrow, HA7 1LN
Single storey rear extension: 6.00 metres deep, 3.37 metres maximum height and 3.00 metre…
2021
Approved
11 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single Storey Rear Extension: 6.00 metres deep, 3.00 metres maximum height, 2.70 metres h…
2021
Approved
41 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single Storey Rear Extension: 6.00 metres deep, 3.40 metres maximum height, 3.00 metres h…
2021
Approved
11 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single Storey Rear Extension: 6.00 metres deep, 3.00 metres maximum height, 2.70 metres h…
2021
Approved
11 Clydesdale Avenue, Stanmore, Harrow, HA7 1LN
Single storey rear extension: 6.00 metres deep, 3.45 metres maximum height and 2.90 metre…
2020
Approved
29 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metre…
2020
Approved
29 Clydesdale Avenue, Stanmore, Harrow, HA7 1LN
Single storey rear extension: 6.00 metres deep, 3.37 metres maximum height and 3.00 metre…
2020
Refused
15 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single storey rear extension to connect detached garage; conversion of garage to play roo…
2020
Approved
15 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single Storey Rear Extension: 6.00 metres deep, 3.20 metres maximum height, 3.00 metres h…
2020
Approved
24 Clydesdale Avenue, Stanmore, HA7 1LW
Single storey rear extension removal of chimney breasts formation of ground floor shower/…
2020
Approved
15 Charmian Avenue, Stanmore, HA7 1LL
Loft conversion and removal of chimneys gas and electrical installations are excluded fro…
2020
Approved
24 Clydesdale Avenue, Stanmore, HA7 1LW
Single storey rear extension removal of chimney breasts and formation of ground floor sho…
2020
Withdrawn
15 Charmian Avenue, Stanmore, Harrow, HA7 1LL
Single Storey Rear Extension: 6.00 metres deep, 3.20 metres maximum height, 3.00 metres h…
2016
Approved
45 Clydesdale Avenue, Stanmore, HA7 1LN
Single storey rear extension: extending 4 metres beyond the original rear wall 3.4 Metres…
2016
Approved
43 Clydesdale Avenue, Stanmore, HA7 1LN
Single storey rear extension: extending 4 metres beyond the original rear wall 3.4 Metres…
2016
Approved
41 Clydesdale Avenue, Stanmore, HA7 1LN
Single storey rear extension: extending 4 metres beyond the original rear wall 3.4 Metres…
2016
Approved
1 Charmian Avenue, Stanmore, HA7 1LL
Single storey rear extensions
2016
Approved
1 Charmian Avenue, Stanmore, HA7 1LL
Single storey rear extension: extending 6 metres beyond the original rear wall 3 metres m…
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