45 Grange Park Avenue London N21 2LP Data via plota.co.uk

26/03484/CEA - Cert of Lawful Use/Operation - Proposed Application in Progress
Extensions & alterations

Proposal

Extension to roof at side to form gable end with rear dormer, Juliette balcony, front roof lights, additional window to front and side elevations, removal of chimney at side, together with outbuilding at rear. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
18 Aug 2026
Decision
Expected by 13 Oct 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision between 28 Sept 2026 and 7 Oct 2026, from Enfield's recent extensions.

Documents 1

Application forms 1

PDF Application Form - Without Personal Data Application Form - Without Personal Data · 18 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 3

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 Named permitted development rights are withdrawn here.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 ↗
Also on the record
Inside the Enfield built-up area.
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

18 May 2026Pending

25 Grange Park Avenue London N21 2LP

Single storey rear extension involving new steps and handrail access to rear gar...

26/02067/HOU
7 Apr 2026Approved

68 Firs Park Avenue London N21 2PT

Part single, part two-storey side/rear extension involving conversion of garage ...

26/01378/HOU

Nearby new applications

28 Aug 2026Pending

4 Kent Road London N21 2JR

Single storey rear extension.

26/03659/HOU
1 Sept 2026Pending

64 The Chine London N21 2ED

Works to trees in Grange Park Conservation area: 4x Leylandii - remove.

26/03713/TCA
21 Aug 2026Pending

9 Gatward Close London N21 1AS

Single storey rear extension 4m deep x 3m high (3m high to eaves).

26/03549/PRH
24 Jul 2026Pending

2B Oxford Gardens London N21 2AP

Front porch with external white render.

26/03166/HOU
10 Aug 2026Pending

36 Cambridge Gardens London N21 2AT

Single storey rear extension and patio.

26/03386/HOU
13 Aug 2026Pending

Land End, 18 And Bush Hill Cottage, 20 Bush Hill London N21

Details submitted pursuant to reference 20/03530/FUL: SuDs strategy (13) in resp...

26/03434/CND

Important details

Council
Enfield
Application type
Cert of Lawful Use/Operation - Proposed
Postcode
N21 2LP
Received
18 Aug 2026
Validated
18 Aug 2026
Ward
Grange Park
Case officer
Show
Target decision
13 Oct 2026
Decision level
Delegated Decision
Applicant
Show
Agent
John Perrin & Sons Ltd

Decision outlook

Day 27 of the 56-day target. Enfield usually decides extensions by day 46.

Day 2729 days to the 56-day target
91%decided within 8 weeks
79%approved
1,118decided in the last year

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

Public comments

No public comments yet.

Last counted 9 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15166765
Statutory expiry
13 Oct 2026
Env. assessment
No

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
8 Park Drive London N21 2LR
Single storey rear extension.
25/01988/HOU
2022 Approved
37 Grange Park Avenue London N21 2LP
Single storey rear extension 6m deep x 4m high (3m high to eaves).
22/02215/PRH
2022 Refused
37 Grange Park Avenue London N21 2LP
Single storey rear extension 6m deep x 4.00m high (3.00m high to eaves).
22/00199/PRH
2021 Approved
35 Grange Park Avenue London N21 2LP
Extension to roof at side to form gable end with rear dormer with doors and juliette balc…
21/04539/CEA
2021 Approved
16 Park Drive London N21 2LR
Two storey side extension and part single, part 2-storey rear extension, together with fr…
21/04214/HOU
2021 Approved
14 Grange Park Avenue London N21 2LJ
Part single, part first floor side extension together with front porch and alterations to…
21/04101/HOU
2020 Approved
34 Grange Park Avenue London N21 2LJ
Extension to roof at side to form part gable end with rear dormer, front rooflights, Juli…
20/04032/CEA
2020 Refused
16 Grange Park Avenue London N21 2LJ
Erection of a Hip to gable and rear dormer roof extensions in association with a Juliette…
20/03917/CEA
2020 Approved
6 Park Drive London N21 2LR
Part single, part 2-storey front / side / rear extension.
20/01594/HOU
2018 Approved
17 Grange Park Avenue Winchmore Hill London N21 2LP
Single storey rear extension.
18/01992/HOU
2018 Approved
16 Grange Park Avenue Winchmore Hill London N21 2LJ
Single storey front extension, first floor side extension, rear dormer with patio doors…
18/00253/HOU
2017 Refused
16 Grange Park Avenue Winchmore Hill London N21 2LJ
Single storey front extension involving front porch, first floor front/side extension, re…
17/02292/HOU
2016 Refused
9 Park Drive London N21 2LU
Single storey side and rear extension, rear decking and detached outbuilding at rear to b…
16/05171/HOU
2016 Approved
28 Park Drive London N21 2LR
Conversion of garage to habitable room with alterations to front elevation.
16/01838/HOU
2016 Approved
36 Park Drive London N21 2LR
Single storey rear extension and alterations to existing porch.
16/01798/HOU
2016 Approved
36 Park Drive London N21 2LR
Hip to gable, flank window, rear dormer with doors and balustrades and 2 x front roofligh…
16/00234/CEA
2016 Withdrawn
36 Park Drive London N21 2LR
Single storey rear extension 4.5m deep x 3.375m high (3m high to eaves)
16/00477/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