Postcode record · Barnet
EN4 8LX.
EN4 8LX has 26 known premises and 23 planning records — 16 approved of 23 decided (69.6%). 15 EPC records.
Postcode EN4 8LX · boundary not held, centred on the postcodeApprovedRefusedOther23 on the map — every match
At a glance · this postcodeBarnet profile →
26
Premises
known addresses (UPRNs)
23
Applications
23 decided
69.6%
Approval rate
16 approved · 7 refused
43 days
Median decision time
average 50 days · 23 dated decisions
15
EPC records
ratings C 2 · D 10 · E 3
23
Mapped applications
inside the postcode shape
Postcode unit boundary from Ordnance Survey; premises and applications inside it. Aggregates describe the area, not any single premises.
Property
What is it?
EN4 8LX has 26 known premises and 23 planning records — 16 approved of 23 decided (69.6%). 15 EPC records.
Premises (18 of 26 shown)
Name
Details
UPRN 200032368
UPRN 200032370
UPRN 200032372
UPRN 200032374
UPRN 200032376
UPRN 200032378
UPRN 200032380
UPRN 200032382
UPRN 200032384
UPRN 200032386
UPRN 200032368
UPRN 200032370
UPRN 200032372
Show all 10 rows
UPRN 200032374
UPRN 200032376
UPRN 200032378
UPRN 200032380
UPRN 200032382
UPRN 200032384
UPRN 200032386
Planning
What happened?
23 planning applications across the postcode; 16 approved of 23 decided (69.6%). Latest 23 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights
4 Derwent Avenue Barnet EN4 8LX · premises record
Officer Lottie Burden
Proposed Lawful Development Certificate
Approved
2026-05-14
Roof extension involving rear dormer window with juliette balcony
20 Derwent Avenue Barnet EN4 8LX · premises record
—
Refused
2025-12-09
Single storey rear extension with pitched roof and 2no. rooflights
20 Derwent Avenue Barnet EN4 8LX · premises record
—
Approved
2024-09-16
Householder Application
Approved
2022-03-17
Erection of a rear outbuilding (Retrospective Application)
26 Derwent Avenue Barnet EN4 8LX · premises record
Officer Asha Chhabhaiya
Retention/Continued Use
Refused
2022-03-10
Erection of a rear outbuilding
4 Derwent Avenue Barnet EN4 8LX · premises record
Officer Asha Chhabhaiya
Proposed Lawful Development Certificate
Approved
2020-02-10
Erection of a rear summer house
4 Derwent Avenue Barnet EN4 8LX · premises record
Officer Jade Gillespie
Proposed Lawful Development Certificate
Refused
2019-12-11
Single storey rear extension following demolition of existing conservatory
44 Derwent Avenue Barnet EN4 8LX · premises record
Officer Erica Mason
Householder Application
Approved
2018-05-24
Roof extension involving hip to gable, rear dormer window, 2no front rooflights and new side gable window
44 Derwent Avenue Barnet EN4 8LX · premises record
Officer Asha Chhabhaiya
Proposed Lawful Development Certificate
Approved
2018-05-24
Single storey rear extention with proposed depth of 6 metres, eaves height of 2.6 metres with a maximum height of 3 metres
22 Derwent Avenue Barnet EN4 8LX · premises record
Prior Notification (Householder)
Refused
2016-06-28
Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights
4 Derwent Avenue Barnet EN4 8LX · premises record
Officer Lottie Burden
Approved
2026-05-14
More
Proposed Lawful Development Certificate
Roof extension involving rear dormer window with juliette balcony
20 Derwent Avenue Barnet EN4 8LX · premises record
Refused
2025-12-09
More
—
Single storey rear extension with pitched roof and 2no. rooflights
20 Derwent Avenue Barnet EN4 8LX · premises record
Approved
2024-09-16
More
—
Show all 10 rows
Approved
2022-03-17
More
Householder Application
Erection of a rear outbuilding (Retrospective Application)
26 Derwent Avenue Barnet EN4 8LX · premises record
Officer Asha Chhabhaiya
Refused
2022-03-10
More
Retention/Continued Use
Erection of a rear outbuilding
4 Derwent Avenue Barnet EN4 8LX · premises record
Officer Asha Chhabhaiya
Approved
2020-02-10
More
Proposed Lawful Development Certificate
Erection of a rear summer house
4 Derwent Avenue Barnet EN4 8LX · premises record
Officer Jade Gillespie
Refused
2019-12-11
More
Proposed Lawful Development Certificate
Single storey rear extension following demolition of existing conservatory
44 Derwent Avenue Barnet EN4 8LX · premises record
Officer Erica Mason
Approved
2018-05-24
More
Householder Application
Roof extension involving hip to gable, rear dormer window, 2no front rooflights and new side gable window
44 Derwent Avenue Barnet EN4 8LX · premises record
Officer Asha Chhabhaiya
Approved
2018-05-24
More
Proposed Lawful Development Certificate
Single storey rear extention with proposed depth of 6 metres, eaves height of 2.6 metres with a maximum height of 3 metres
22 Derwent Avenue Barnet EN4 8LX · premises record
Refused
2016-06-28
More
Prior Notification (Householder)
Building control
Building-control records are not yet collected for Barnet — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
Every mapped designation touching a premises in this postcode, with how many of its 26 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 26 of 26 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 26 of 26 premises. Some normally permitted changes may require planning permission.
Nearby postcodes and streets
Walk to the next area — linked where the Atlas has a record for it (pilot borough only for now).
People
Who is involved?
Named on the latest 23 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Case officer on 3 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 3 applications
Case officer on 2 applications
Case officer on 1 application
Show all 8 rows
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent23 applications and 23 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy15 EPC records; ratings C: 2, D: 10, E: 3.
What is not assertedNo capacity, value or ownership claim is made at area level; those belong to individual premises records and their evidence.
Intent signals
Planning Atlas ProOwnership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.