31 Haslemere Avenue London NW4 2PU

Pending Consideration 26/1092/HSE
Extensions & alterations
Council
Barnet 6.5/10
Date received
23 Mar 2026
Date validated
23 Mar 2026
Postcode
NW4 2PU

Description

Single storey front and side extension and part single, part two storey rear extension

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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

2023 With conditions
9 Mayfield Gardens London NW4 2PY
Erection of a part single part two storey side and rear extension. New front porch and tw…
23/4670/HSE
2022 With conditions
29 Shirehall Lane London NW4 2PT
Single storey front, side and rear extension. First floor rear extension. Conversion of g…
22/5536/HSE
2023 Refused
37 Haslemere Avenue London NW4 2PU
Single storey rear extension following demolition of the existing extension. Addition of…
23/0649/192
2022 Refused
37 Haslemere Avenue London NW4 2PU
Roof extension involving hip to gable and rear dormer window
22/3734/HSE
2022 Withdrawn
37 Haslemere Avenue London NW4 2PU
Single storey rear extension. Roof extension involving wraparound rear/side dormer, repla…
22/2922/192
2022 With conditions
31 Shirehall Lane London NW4 2PT
Part single, part two storey rear extension (AS AMENDED)
22/3999/HSE
2022 With conditions
117 Shirehall Park London NW4 2QU
Single storey side extension. Extension of raised rear patio (AMENDED DESCRIPTION)
22/2954/HSE
2022 Approved
17 Haslemere Avenue London NW4 2PU
Roof extension involving a wraparound dormer windows, 2no side windows and 2no front faci…
22/3865/192
2022 With conditions
105 Shirehall Park London NW4 2QU
Single storey front, side and rear extension following demolition of the existing garage…
22/2449/HSE
2022 With conditions
31 Shirehall Lane London NW4 2PT
Part single, part two storey rear extension (Amended Plans)
22/1965/HSE
2022 With conditions
35 Haslemere Avenue London NW4 2PU
Single storey front and side extension involving a new bay window and front porch. Conver…
22/1133/HSE
2022 Approved
105 Shirehall Park London NW4 2QU
Alterations to roof including 2no. hip to gable extensions and insertion of 3no. front an…
22/1866/192
2021 With conditions
105 Shirehall Park London NW4 2QU
Single storey front, side and rear extension following demolition of the existing garage…
21/6709/HSE
2022 Refused
31 Shirehall Lane London NW4 2PT
Two storey rear extension
22/1094/192
2022 With conditions
21 Haslemere Avenue London NW4 2PU
Part single, part two storey rear extension including removal of chimneys. Single storey…
22/1050/HSE
2022 Refused
17 Haslemere Avenue London NW4 2PU
Roof extension involving side and rear dormer windows
22/1358/192
2022 With conditions
21 Mayfield Gardens London NW4 2PY
Single storey front, rear and side extension. Changes to fenestration
22/0634/HSE
2022 With conditions
27 Mayfield Gardens London NW4 2PY
Single storey front extension. Part single, part two storey rear extension following demo…
22/1033/HSE
2021 Refused
31 Shirehall Lane London NW4 2PT
Part single, part two storey rear extension
21/6694/HSE
2022 Approved
35 Haslemere Avenue London NW4 2PU
Roof extension involving hip to gable, rear dormer window, 3no front facing rooflights. N…
22/0449/192
2016 With conditions
13 Haslemere Avenue London NW4 2PU
Roof extension involving hip to gable, enlargement of existing rear dormer window to faci…
16/6974/HSE
2016 With conditions
34 Haslemere Avenue London NW4 2PX
Part single part two storey rear extension. Single storey side extension. New front porch
16/3687/HSE
2016 Approved
34 Haslemere Avenue London NW4 2PX
Roof extension involving hip to gable, rear dormer window with 2no rooflights to front el…
16/3686/192
2016 With conditions
19 Mayfield Gardens London NW4 2PY
Single storey rear extension. Removal of dual pitched roof on single storey side extension
16/1908/HSE
2016 With conditions
13 Haslemere Avenue London NW4 2PU
Part single part two storey rear extension following partial rear demolition and demoliti…
16/0233/HSE
Barnet
Planning Authority Score
6.5/10
Good
#79 of 292 councils
Relevant to this application:
Householder decisions

Barnet is faster than most councils at deciding householder applications, ranking #32 out of 292. Only 23% of applications have the time limit extended, well below the 40% national average - the council usually decides on time. Barnet 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
Barnet decision performance
Based on MHCLG data, 2025
76%
Overall approval rate
Below avg (87%) #277 of 292
83%
Householder approved
Below avg (90%) #252 of 292
82%
Decided in 8 weeks
Above avg (64%) #32 of 292
23%
Extended time limit
Below avg (40%) #25 of 292
53%
Minor dwellings approved
323 decided (1-9 homes)
94%
Major dwellings approved
16 decided (10+ homes)
41%
Change of use approved
123 decided
2,539
Total decisions
599 refused in 2025
Source: MHCLG planning statistics · See full council rankings