40 The Birches London N21 1NL Data via plota.co.uk

26/00997/NMA - App for Non-Material Amendments Approved
Admin / procedural

Proposal

Non material amendment to ref: to allow removal of first floor extension, retain existing bathroom therefore new rear room has a window on rear elevation, reduce rear ground floor extension depth from 4m to 3m and remove window on side elevation from front bedroom. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
13 Mar 2026
✓
Approved
7 Apr 2026

Approved on 7 Apr 2026 · Delegated Decision · Last checked 6 Jul 2026

Documents 3

Decision & officer reports 2

PDF Decision Notice Decision Notice · 7 Apr 2026 View ↗ PDF Officer Report Officer Report · 7 Apr 2026 View ↗

Application forms 1

PDF Application Form - Without Personal Data Application Form - Without Personal Data · 13 Mar 2026 View ↗

All documents on the council site ↗

Associated applications 3

Site constraints 5

Article 4 direction
Borough wide. Named permitted development rights are withdrawn here.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: Enfield 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 ↗
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 Enfield built-up area; Metropolitan Open Land 82 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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Important details

Council
Enfield
Application type
App for Non-Material Amendments
Postcode
N21 1NL
Received
13 Mar 2026
Validated
13 Mar 2026
Ward
Southgate
Case officer
Show
Target decision
10 Apr 2026
Decision
Granted
Decision date
7 Apr 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Show

Consultation & key dates

Alt. reference
PP-14777629
Env. assessment
No

Historical activity at this location

28 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2024 Approved
Part single, part two storey side extension and part single, part two storey rear extensi…
24/02271/HOU
2023 Refused
Part single part two storey side and rear extensions with 2 x roof lights at the front an…
23/03466/HOU
2018 Approved
Two storey side extension and part single, part 2-storey rear extension.
18/00338/HOU
Within ~100m

Nearby activity

2025
35 Oakwood Crescent London N21 1NX
Conversion of garage into habitable room involving alterations to front elevation and fro…
25/03390/HOU
2024 Approved
35 Oakwood Crescent London N21 1NX
Single storey rear extension 4m deep x 4m high (3m high to eaves)
24/01853/PRH
2022 Approved
22 The Birches London N21 1NL
Two storey side extension and single storey rear extension together with rear dormer with…
22/03796/HOU
2022 Approved
47 Oakwood Crescent London N21 1NX
Single storey rear extension.
22/03087/HOU
2022 Approved
33 Oakwood Crescent London N21 1NX
Demolition of existing conservatory, single storey rear/side extension with alterations t…
22/02441/HOU
2022 Approved
14 Holly Hill London N21 1NP
Single storey rear extension together with demolition of detached garage at rear and erec…
22/00921/HOU
2021 Withdrawn
The Birches 22 Winchmore Hill London N21 1NL
Two storey side extension and single storey rear extension together with rear dormer with…
21/04789/HOU
2021 Approved
19 Oakwood Crescent London N21 1NX
Demolition of conservatory and erection of a single storey rear extension.
21/03987/HOU
2021 Approved
6 Holly Hill London N21 1NP
Single storey rear extension 4m deep x 3m high (2.70m high to eaves).
21/03776/PRH
2021 Approved
3 Eversley Close London N21 1NY
Single storey rear extension 4.00m deep x 4.00m high (2.94m high to eaves).
21/02607/PRH
2020 Approved
26 The Birches London N21 1NL
Single storey side extension incorporating replacement garage together with conversion of…
20/03737/HOU
2019 Refused
28 The Birches London N21 1NL
First floor rear extension, creation of a basement level with courtyard to rear.
19/04208/HOU
2019 Refused
28 The Birches London N21 1NL
Creation of basement with rear court.
19/02794/HOU
2019 Refused
12 Holly Hill London N21 1NP
Installation of pitched roof over existing outbuilding (PART RETROSPECTIVE).
19/01935/FUL
2019 Approved
28 The Birches London N21 1NL
First floor rear extension.
19/01740/HOU
2019 Approved
3 Eversley Close London N21 1NY
Dormer at side with rooflights.
19/01191/CEA
2018 Refused
18 Holly Hill London N21 1NP
Extension to roof at side to form gable end with rear dormer, patio doors, Juliette balco…
18/04098/HOU
2018 Approved
18 Holly Hill London N21 1NP
Single storey rear extension 4m deep x 3.1m high (3.1m high to eaves).
18/04143/PRH
2018 Refused
27 Oakwood Crescent London N21 1NX
Single storey rear extension.
18/01965/HOU
2018 Approved
16 Holly Hill London N21 1NP
Single storey rear extension.
18/01125/CEA
2017 Approved
25 Oakwood Crescent London N21 1NX
Single storey rear extension and extension to front of existing garage including alterati…
16/05971/HOU
2016 Approved
21 Holly Hill London N21 1NN
Single storey rear extension, new basement and terrace at rear.
16/05713/HOU
2016 Approved
23 The Birches London N21 1NJ
Erection of single storey and first floor rear extensions, installation of 3 x windows to…
16/03730/HOU
2016 Approved
15 The Birches London N21 1NJ
First floor rear extension.
16/00945/HOU
2016 Approved
12 Holly Hill London N21 1NP
Single storey rear extension 4m deep x 3.18m high (3m high to eaves)
16/01058/PRH
Enfield
Planning Authority Score
6.9/10
Good
#65 of 296 councils
Relevant to this application:
Householder decisions

Enfield is one of the fastest councils in England for householder decisions, ranking #15 out of 296. Only 5% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Enfield is also one of the strictest councils - it refuses more householder applications than almost any other, with only 83% approved vs 90% nationally.

Among the fastest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Enfield decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #271 of 296
83%
Householder approved
Below avg (90%) #260 of 296
90%
Decided in 8 weeks
Above avg (63%) #15 of 296
5%
Extended time limit
Below avg (41%) #1 of 296
60%
Minor dwellings approved
265 decided (1-9 homes)
63%
Major dwellings approved
8 decided (10+ homes)
72%
Change of use approved
322 decided
1,939
Total decisions
433 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings