8A Firs Avenue London N11 3NG Data via plota.co.uk

26/2447/191 - Existing Lawful Development Certificate Refused
Extensions & alterations

Proposal

New side porch and canopy with window Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
26 Jun 2026
✓
Validated
10 Jul 2026
✗
Refused
4 Sept 2026
Appeal
Not lodged

Refused on 4 Sept 2026 · Delegated Decision · Last checked 5 Sept 2026

Documents 7

Decision & officer reports 1

PDF DN: UNLAWFUL 191 Decision Notice · 4 Sept 2026 View ↗

Plans & drawings 2

PDF THE LOCATION PLAN Site Location Plan · 26 Jun 2026 View ↗ PDF FLOOR PLAN - EXISTING Drawing · 26 Jun 2026 View ↗

Application forms 1

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 26 Jun 2026 View ↗

Consultation & comments 3

PDF COMMENT(FULL) Public Comment · 15 Jul 2026 View ↗ PDF COMMENT(FULL) Public Comment · 12 Jul 2026 View ↗ PDF COMMENT(FULL) Public Comment · 11 Jul 2026 View ↗

All documents on the council site ↗

Site constraints 6

Article 4 direction
Article 4 Small Houses in Multiple Occupation (HMO) Area 1. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Barnet 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 ↗
Local nature reserve 113 m away: Coppetts Wood and Glebelands
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Barnet built-up area; Metropolitan Open Land 91 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building 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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Other new applications on this street

7 Jul 2026Refused

76 Firs Avenue London N11 3NQ

Installation of air source heat pump to front elevation

26/2548/HSE

Nearby new applications

20 Aug 2026Approved

9 St Johns Avenue London N11 3BX

Roof extension with 1no. rear dormer window over main roof and 1no. rear dormer ...

26/3067/192
13 Aug 2026Pending

50B Cromwell Road London N10 2PD

Second floor rear dormer extension over the rear outrigger

26/2993/FUL
24 Jul 2026Pending

1 Royal Drive London N11 3FU

Alterations to existing garage / outbuilding including installation of heritage ...

26/2745/LBC
24 Jul 2026Pending

1 Royal Drive London N11 3FU

Alterations to existing garage / outbuilding including installation of heritage ...

26/2744/HSE
20 Jul 2026Pending

53 Pembroke Road London N10 2HX

Conversion of the existing dwelling into 2no. self-contained flats. Associated a...

26/2692/FUL
21 Jul 2026Pending

12 Hopkins Close London N10 2PF

Single storey rear extension with flat roof and 1no. skylight. Roof extension in...

26/2697/HSE

Important details

Council
Barnet
Application type
Existing Lawful Development Certificate
Postcode
N11 3NG
Received
26 Jun 2026
Validated
10 Jul 2026
Ward
Friern Barnet
Case officer
Show
Target decision
4 Sept 2026
Decision
Unlawful
Decision date
4 Sept 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Show

How this decision compares

Decided in 56 days from validation, about the council's usual 53 days. Refused, as 26% of extensions here are.

87%decided within 8 weeks
74%approved
1,436decided in the last year

Plota live figures for extensions decided by Barnet in the last twelve months, from validation. Barnet decision record →

Public comments

2comments received
2 objecting

Last counted 5 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15042040

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
2 Firs Avenue London N11 3NG
Single storey rear extension to the existing detached garage
25/4481/HSE
2022 Approved
29 Firs Avenue London N11 3NE
1 x Oak (applicants ref. T1) - Reduce crown on side facing house by 2m to give adequate c…
TPP/0499/22
2022 Approved
86 Firs Avenue London N11 3NQ
Single storey side extension
22/3887/HSE
2022 Refused
86 Firs Avenue London N11 3NQ
Single storey side extension
22/3362/192
2022 Refused
2 Wharfdale Close London N11 3FZ
x 2 oak trees (T31 and T32 applicants plan). Crown reductions approximately 7 meters. Sta…
TPP/0074/22
2021 Approved
9 Firs Avenue London N11 3NE
Single storey side extension
21/0261/HSE
2019 Approved
33 Poplar Grove London N11 3NH
Single storey rear extension with a proposed depth of 4.5 metres from original rear wall…
19/1951/PNH
2018 Approved
10 Firs Avenue London N11 3NG
Part single part two storey rear extension following demolition of existing conservatory…
18/7159/HSE
2018 Refused
29 Poplar Grove London N11 3NH
Single storey rear extension linking existing outbuilding to main house (Retrospective Ap…
18/6504/RCU
2017 Approved
8 Firs Avenue London N11 3NG
Single storey side/rear extension conversion of existing dwelling and sub-division of plo…
17/6777/FUL
2018 Approved
S/O 2 Firs Avenue London N11 3NG
Installation of BT Openreach cabinet (PCP012 014 037 EB)
18/2172/LIC
2018 Refused
20 Firs Avenue London N11 3NG
Single storey rear conservatory with rear patio and associated garden landscaping
18/1339/192
2017 Approved
28 Firs Avenue London N11 3NG
Citizen band aerial on 5m aluminium pole (Retrospective Application)
17/1861/RCU
2017 Approved
28 Firs Avenue London N11 3NG
Citizen band aerial on 5m aluminium pole (Retrospective Application)
17/1861/HSE
Barnet
Planning Authority Score
6.2/10
Average
#90 of 296 councils
Relevant to this application:
Householder decisions

Barnet is faster than most councils at deciding householder applications, ranking #42 out of 296. Only 25% of applications have the time limit extended, well below the 41% 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 82% approved vs 90% nationally.

One of the strictest councils
only 82% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Barnet decision statistics
Based on MHCLG data, the year to March 2026
75%
Overall approval rate
Below avg (87%) #285 of 296
82%
Householder approved
Below avg (90%) #264 of 296
79%
Decided in 8 weeks
Above avg (63%) #42 of 296
25%
Extended time limit
Below avg (41%) #29 of 296
55%
Minor dwellings approved
319 decided (1-9 homes)
90%
Major dwellings approved
21 decided (10+ homes)
41%
Change of use approved
132 decided
2,541
Total decisions
625 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings