22 Westerham Avenue London N9 9BU Data via plota.co.uk

26/04504/FUL - Full Application in Progress
Extensions & alterations

Proposal

Single storey infill extension to rear (RETROSPECTIVE). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
23 Oct 2026
✓
Validated
2 Nov 2026
Decision
Expected by 28 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 12 Dec 2026 and 22 Dec 2026, from Enfield's recent extensions.

Documents 4

Statements & assessments 1

PDF SuDS pro forma Sustainable Drainage · 2 Nov 2026 View ↗

Application forms 2

PDF community Infrastructure levy form 1 Community Infrastructure Levy ? Completed Form · 2 Nov 2026 View ↗ PDF Application Form - Without Personal Data Application Form - Without Personal Data · 23 Oct 2026 View ↗

Other documents 1

PDF PHOTOGRAPHS AND PHOTOMONTAGES Photographs and Photomontages · 23 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 4

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 Named permitted development rights are withdrawn here.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; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 10 November 2026. Historic England, the Environment Agency, Natural England, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) 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.

Building

Floor area44 m² (474 sq ft)
Energy ratingC (asset rating 56)
UseRetail/Financial and Professional Services
HeatingHeating and Natural Ventilation

From the energy performance certificate lodged in September 2023, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

17 Jun 2026Approved

14 - 16 Westerham Avenue London N9 9BU

Details submitted pursuant to reference 23/02928/FUL: construction management pl...

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7 Rayleigh Road London N13 5QW

Extension to roof at side to form gable end with rear dormer and front porch.

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29 North Circular Road London N13 5EG

Use of premises as five self-contained flats.

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19 Rylston Road London N13 5NQ

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Important details

Council
Enfield
Application type
Full
Postcode
N9 9BU
Received
23 Oct 2026
Validated
2 Nov 2026
Ward
Haselbury
Case officer
Show
Target decision
28 Dec 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Ionic Plan & Design Ltd

Decision outlook

Day 10 of the 56-day target. Enfield usually decides extensions by day 44.

Day 1046 days to the 56-day target
89%decided within 8 weeks
79%approved
2,094decided 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 10 Nov 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15319333
Planning Portal ref
PP-15319333
Statutory expiry
28 Dec 2026
Env. assessment
No

Historical activity at this location

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

Within ~100m

Nearby activity

2025
2 Selhurst Road London N9 9DB
Subdivision of the site and erection of a 2-storey with loft 4 bedroom end of terrace dwe…
25/02127/FUL
2025
2 Selhurst Road London N9 9DB
Part single, part two storey rear extension.
25/00820/HOU
2024 Refused
2 Selhurst Road London N9 9DB
Part single storey, part 2 storey rear extension.
24/04272/HOU
2024 Approved
2 Selhurst Road London N9 9DB
Single storey rear extension 5m deep x 3.05m high (2.8m high to eaves).
24/04265/PRH
2023 Approved
30 Westerham Avenue London N9 9BU
Single storey rear extension and extension of rear stairs.
23/04049/FUL
2023 Approved
14 - 16 Westerham Avenue London N9 9BU
Second floor infill extension over first floor existing apartments to create 2 self-conta…
23/02928/FUL
2023 Approved
24 Westerham Avenue London N9 9BU
Creation of 2nd floor to facilitate 1x self-contained flat, involving 1st floor walking p…
23/00933/FUL
2022 Refused
14 - 16 Westerham Avenue London N9 9BU
Second floor infill extension over first floor existing apartments to create 2 self-conta…
22/04164/FUL
2022 Refused
23 Westerham Avenue London N9 9BT
First floor rear extension.
22/01363/HOU
2022 Refused
23 Westerham Avenue London N9 9BT
Single storey rear extension 5.15m deep x 2.95m high (2.95m high to eaves).
22/01085/PRH
2022 Approved
5 Westerham Avenue London N9 9BT
Sub-division of site for 2-storey dwelling house, erection of first floor rear and side e…
22/00139/FUL
2022 Approved
32 Bromley Road London N18 1LH
Subdivision of single family dwelling house into 2 self-contained dwellings involving ere…
22/00618/FUL
2021 Refused
32 Bromley Road London N18 1LH
Subdivision of single family dwelling house into 2 self-contained dwellings involving ere…
21/04743/FUL
2021 Approved
24A Westerham Avenue London N9 9BU
Single storey rear extension and installation of new shopfront.
21/03209/FUL
2021 Approved
14 - 16 Westerham Avenue London N9 9BU
Installation of outdoor shelving to shopfront.
21/03539/FUL
2021 Refused
49 Bromley Road London N18 1LF
Single storey rear extension 5.00m deep x 3.00m high (3.00m high to eaves).
21/03331/PRH
2021 Approved
49 Bromley Road London N18 1LF
First floor rear extension.
21/02662/HOU
2021 Refused
78 Windmill Road London N18 1LN
Subdivision of site and erection of an end-of-terrace 2-storey dwelling house with associ…
21/02224/FUL
2021 Approved
38 Westerham Avenue London N9 9BS
Single storey rear extension 3.50m deep x 3.00m high (3m high to eaves).
21/02475/PRH
2021 Approved
34 Westerham Avenue London N9 9BS
Extension to roof at side to form gable end with rear dormer and front rooflight.
21/01454/HOU
2017 Approved
26 Selhurst Road London N9 9DB
Rear dormer with front rooflights
17/01822/CEA
2016 Refused
30 Westerham Avenue London N9 9BU
Two-storey side extension to accommodate 2 x 2-bed flats with internal alterations
16/04024/FUL
2016 Approved
153 Windmill Road London N18 1LL
Single storey rear extension 6m deep x 2.85m high (2.85m high to eaves)
16/03857/PRH
2016 Approved
4 Selhurst Road London N9 9DB
Single storey rear extension and rear dormer.
16/03445/HOU
2016 Approved
30 Westerham Avenue N9 9BU
Erection single storey side/rear extension.
16/02987/FUL
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

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.