21 Marne Avenue London N11 1JU

Pending 26/1800/192
Extensions & alterations
Council
Barnet 6.5/10
Date received
13 May 2026
Date validated
13 May 2026
Postcode
N11 1JU

Description

Roof extension involving rear dormer window and 2no. front facing rooflights

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Nearby new applications

19 Bellevue Road London N11 3ET

Roof Extension involving rear dormer and 2no. front facing rooflights. Erection ...

26/1877/192 - 19 May 2026

Coppice Wood Lodge 10 Grove Road Southgate N11 1LX

Non material amendment to 20/03448/FUL to allow amendments to the design arising...

26/02052/NMA - 15 May 2026

13 Parkhurst Road London N11 3EN

Use of a dwelling (Use Class C3a) as a children's home for up to three children,...

26/1825/192 - 15 May 2026

10 Glenthorne Road London N11 3HT

Single storey rear extension following the demolition of the existing conservato...

26/1694/HSE - 6 May 2026

107 Friern Barnet Road London N11 3EU

Single storey rear and side infill extension following the demolition of existin...

26/1634/FUL - 30 Apr 2026

10 Glenthorne Road London N11 3HT

Roof extension involving side and rear L-shaped dormer, 2no. front facing roofli...

26/1542/192 - 24 Apr 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Refused
88 Oakleigh Road South London N11 1LB
Change of use of rear garden home office from (Class C3) to Estate Agent Office (Class E)
25/4429/FUL
2025 Approved
46 Falkland Avenue London N11 1JS
Roof extension involving rear dormer window and 2no. front facing rooflights
25/3526/192
2025 With conditions
38 Falkland Avenue London N11 1JS
Single storey rear extension with 3no. rooflights and new patio area with associated acce…
25/2367/HSE
2025 Approved
33 Park View Crescent London N11 1JY
Roof extension with rear dormer window and 3no. front facing rooflights
25/2194/192
2025 Approved
88 Oakleigh Road South London N11 1LB
Conversion and extension of the existing rear garage into an outbuilding
25/0280/192
2024 Approved
8 Marne Avenue London N11 1JU
Roof extension with rear dormer windows and 2no. front facing rooflights and alterations…
24/5491/192
2024 Approved
35 Falkland Avenue London N11 1JS
Roof extension involving rear dormer and 2no. front facing rooflights
24/1309/192
2024 Approved
35 Marne Avenue London N11 1JU
Roof extension involving hip to gable, rear dormer window and 3no. front facing rooflights
24/0160/192
2023 With conditions
90 Oakleigh Road South London N11 1LB
Single storey rear extension with raised patio and access steps
23/2945/HSE
2023 Approved
22 Marne Avenue London N11 1JU
Roof extension involving rear dormer window and 1no. front facing rooflights. Removal of…
23/2059/192
2023 Approved
90 Oakleigh Road South London N11 1LB
Roof extension involving rear dormer window, 1no. rooflight and 2no. front facing rooflig…
23/2068/192
2023 Refused
90 Oakleigh Road South London N11 1LB
Single storey rear extension with a depth of 5.7m, maximum height of 3.6m and eaves heigh…
23/2015/PNH
2023
48 Falkland Avenue London N11 1JS
Relocation of the existing rear access door and associated access steps to garden and ins…
23/0805/192
2022 Refused
29 Park View Crescent London N11 1JY
Single storey rear extension with a proposed depth of 5.72 metres from the original rear…
22/4989/PNH
2022 Withdrawn
88 Oakleigh Road South London N11 1LB
Conversion of the existing dwelling to provide an additional 2no. self-contained flats. A…
22/3893/FUL
2022 Withdrawn
29 Park View Crescent London N11 1JY
Single storey rear extension with a proposed depth of 2.94 metres from original rear wall…
22/4699/PNH
2022 With conditions
15 Spencer Road London N11 1JX
Single storey rear extension and rear patio
22/3931/HSE
2022 Refused
15 Spencer Road London N11 1JX
Single storey rear extension with a depth of 4.00 metres beyond the original rear wall, a…
22/3167/PNH
2022 With conditions
88 Oakleigh Road South London N11 1LB
Part single, part two storey rear extension following removal of existing conservatory
22/2684/HSE
2022 Approved
88 Oakleigh Road South London N11 1LB
Single storey rear extension. Removal of chimney
22/2373/192
2017 Refused
9 Marne Avenue London N11 1JU
Single storey rear extension following demolition of existing extension.
17/2064/HSE
2016 With conditions
33 Falkland Avenue London N11 1JS
Single storey rear extension
16/3477/HSE
2016 Approved
20 Marne Avenue London N11 1JU
Extensions to roof involving rear dormer to facilitate a loft conversion. Single storey r…
16/3136/192
2016 Approved
28 Park View Crescent London N11 1JY
Single storey rear extension with a proposed depth of 6 metres from original rear wall, e…
16/2408/PNH
2016 Refused
28 Park View Crescent London N11 1JY
Single storey rear extension with a proposed depth of 6 metres from original rear wall, e…
16/1975/PNH
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