1 Cromwell Road London N3 2ET Data via plota.co.uk

26/1483/192 - Proposed Lawful Development Certificate Approved
Extensions & alterations

Proposal

Roof extension involving hip to gable, rear dormer window and 3no. front facing rooflights Data via plota.co.uk

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View original council record ↗

Application progress

✓
Received
21 Apr 2026
✓
Approved
5 Jun 2026

Approved on 5 Jun 2026 · Delegated Decision · Last checked 7 Jul 2026

Documents 4

Decision & officer reports 1

PDF DN: LAWFUL 192 Decision Notice · 5 Jun 2026 View ↗

Plans & drawings 2

PDF VOLUME CALCULATIONS Drawing · 3 Jun 2026 View ↗ PDF EXISTING/PROPOSED Drawing · 21 Apr 2026 View ↗

Application forms 1

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 21 Apr 2026 View ↗

All documents on the council site ↗

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Important details

Council
Barnet
Application type
Proposed Lawful Development Certificate
Postcode
N3 2ET
Received
21 Apr 2026
Validated
21 Apr 2026
Ward
West Finchley
Case officer
Track to view
Target decision
16 Jun 2026
Decision
Lawful
Decision date
5 Jun 2026
Decision level
Delegated Decision
Applicant
Track to view
Agent
Salstan

Consultation & key dates

Alt. reference
PP-14874801

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
187 Long Lane London N3 2RE
Single storey side and rear extension to replace existing structure
25/3434/HSE
2025 Approved
8 Montpelier Road London N3 2ER
Single storey rear extension with 3no. Rooflights, extension of existing patio and new ex…
25/2532/HSE
2025 Approved
S/O 165 Long Lane London N3 2QY
Installation of 1no. green Virgin Media cabinet
25/1545/LIC
2025 Approved
S/O 181 Squires Lane London N3 2QY
Installation of 1no. green Virgin Media cabinet
25/0809/LIC
2024 Approved
S/O 8 Avondale Road On Montpelier Road London N3 2EP
Installation of 1no. green Virgin Media cabinet
24/4767/LIC
2024 Approved
S/O 183A Long Lane On Cromwell Road London N3 2QY
Installation of 1no. green Virgin Media cabinet
24/4764/LIC
2023 Approved
Ground Floor Flat 145 Squires Lane London N3 2AA
Single storey rear extension with lean to roof and 2no. rooflights. New window to side el…
23/2780/FUL
2022 Approved
15 Avondale Road London N3 2EU
Single storey rear extension. Roof extension involving rear dormer window with juliette b…
22/2513/192
2021 Withdrawn
171 Long Lane London N3 2QY
Single storey side extension
21/4384/192
2021 Approved
22 Montpelier Road London N3 2ER
Single storey rear extension. Roof extension involving hip to gable, rear dormer window w…
21/3595/192
2021 Approved
6 Avondale Road London N3 2EP
Erection of a rear outbuilding
21/0753/HSE
2021 Approved
34 Avondale Road London N3 2ES
Single storey rear extension
21/0385/HSE
2020 Approved
34 Avondale Road London N3 2ES
Roof extension involving hip to gable, 1no side gable window, rear dormer windows and 3no…
20/6031/192
2020 Approved
6 Cromwell Road London N3 2ET
Single storey rear extension with a proposed depth of 5.00 metres from original rear wall…
20/2305/PNH
2020 Refused
6 Cromwell Road London N3 2ET
Single storey rear extension with a proposed depth of 5.00 metres from original rear wall…
20/1791/PNH
2019 Approved
24 Cromwell Road London N3 2ET
Single storey rear extension. Roof extension involving hip to gable, rear dormer window w…
19/1073/192
2018 Approved
13 Cromwell Road London N3 2ET
A single storey rear extension with a proposed depth of 3.50 metres, an eaves height of 2…
18/6783/PNH
2018 Approved
13 Cromwell Road London N3 2ET
Extension to roof including hip to gable, 1no rear dormer window, and 3no rooflights to f…
18/6518/192
2018 Approved
22 Cromwell Road London N3 2ET
Increase in width to rear bedroom window
18/5181/192
2018 Approved
22 Cromwell Road London N3 2ET
Relocation of front entrance door
18/2746/192
2018 Approved
22 Cromwell Road London N3 2ET
Single storey rear extension with new patio area. Roof extension involving rear dormer wi…
18/0888/HSE
2018 Approved
11 Montpelier Road London N3 2ER
Roof extension including rear dormer window and 3no. rooflights to front roofslope.
18/1777/192
2016 Approved
11 Montpelier Road London N3 2ER
Single storey rear extension following demolition of existing bay window and alterations…
16/2902/HSE
2016 Withdrawn
11 Montpelier Road London N3 2ER
Single storey rear extension following demolition of existing bay window
16/1939/192
2016 Approved
23 Cromwell Road London N3 2ET
Single storey rear extension with a proposed depth of 4 metres from original rear wall, e…
16/1294/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