Postcode record · Barnet
EN4 8LZ.
EN4 8LZ has 33 known premises and 29 planning records — 24 approved of 29 decided (82.8%). 17 EPC records.
Postcode EN4 8LZ · boundary not held, centred on the postcodeApprovedRefusedOther29 on the map — every match
At a glance · this postcodeBarnet profile →
33
Premises
known addresses (UPRNs)
29
Applications
29 decided
82.8%
Approval rate
24 approved · 3 refused
48 days
Median decision time
average 48 days · 28 dated decisions
17
EPC records
ratings C 4 · D 9 · E 4
29
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 8LZ has 33 known premises and 29 planning records — 24 approved of 29 decided (82.8%). 17 EPC records.
Premises (18 of 33 shown)
Name
Details
UPRN 200032420
UPRN 200032422
UPRN 200032424
UPRN 200032426
UPRN 200032428
UPRN 200032430
UPRN 200032432
UPRN 200032434
UPRN 200032436
UPRN 200032438
UPRN 200032420
UPRN 200032422
UPRN 200032424
Show all 10 rows
UPRN 200032426
UPRN 200032428
UPRN 200032430
UPRN 200032432
UPRN 200032434
UPRN 200032436
UPRN 200032438
Planning
What happened?
29 planning applications across the postcode; 24 approved of 29 decided (82.8%). Latest 29 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Part single, part two storey side and rear extension. New front porch. Insertion of 3no. front and 1no. side facing rooflight
54 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Ismail Ameen
Householder Application
Approved
2024-07-05
Erection of a single storey dwelling following demolition of the existing garage. Associated parking, refuse and recycling storage
54 Derwent Avenue Barnet EN4 8LZ · premises record
Officer John Sperling
Full Application
Refused
2024-07-05
Single storey rear extension and rear patio, and demolition of existing rear garage
82 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Helen McGuinness
Householder Application
Approved
2020-06-19
Roof extension involving rear dormer windows, juliette balcony and 2no front facing rooflights
82 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Helen McGuinness
Proposed Lawful Development Certificate
Approved
2020-06-04
Householder Application
Approved
2019-10-01
Part single, part double two storey side and rear extensions. Installation of 2no rooflights to front roofslope. New front entrance
110 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Sofie Fieldsend
Householder Application
Approved
2017-03-06
Single storey rear extension
110 Derwent Avenue Barnet EN4 8LZ · premises record
Proposed Lawful Development Certificate
Approved
2017-02-03
Single storey rear extension with a proposed depth of 6 metres from original rear wall, eaves height of 2.95 metres and maximum height of 3.95 metres
110 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Tania Sa Cordeiro
Prior Notification (Householder)
Refused
2016-11-28
Single storey rear extension with a proposed maximum depth of 4 metres from original rear wall, eaves height of 3 metres and maximum height of 3 metres
80 Derwent Avenue Barnet EN4 8LZ · premises record
Prior Notification (Householder)
Not required
2016-08-02
Roof extension involving a rear dormer and 2 additional rooflights to the front elevation to facilitate a loft conversion
80 Derwent Avenue Barnet EN4 8LZ · premises record
Proposed Lawful Development Certificate
Approved
2016-08-02
Part single, part two storey side and rear extension. New front porch. Insertion of 3no. front and 1no. side facing rooflight
54 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Ismail Ameen
Approved
2024-07-05
More
Householder Application
Erection of a single storey dwelling following demolition of the existing garage. Associated parking, refuse and recycling storage
54 Derwent Avenue Barnet EN4 8LZ · premises record
Officer John Sperling
Refused
2024-07-05
More
Full Application
Single storey rear extension and rear patio, and demolition of existing rear garage
82 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Helen McGuinness
Approved
2020-06-19
More
Householder Application
Show all 10 rows
Roof extension involving rear dormer windows, juliette balcony and 2no front facing rooflights
82 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Helen McGuinness
Approved
2020-06-04
More
Proposed Lawful Development Certificate
Approved
2019-10-01
More
Householder Application
Part single, part double two storey side and rear extensions. Installation of 2no rooflights to front roofslope. New front entrance
110 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Sofie Fieldsend
Approved
2017-03-06
More
Householder Application
Single storey rear extension
110 Derwent Avenue Barnet EN4 8LZ · premises record
Approved
2017-02-03
More
Proposed Lawful Development Certificate
Single storey rear extension with a proposed depth of 6 metres from original rear wall, eaves height of 2.95 metres and maximum height of 3.95 metres
110 Derwent Avenue Barnet EN4 8LZ · premises record
Officer Tania Sa Cordeiro
Refused
2016-11-28
More
Prior Notification (Householder)
Single storey rear extension with a proposed maximum depth of 4 metres from original rear wall, eaves height of 3 metres and maximum height of 3 metres
80 Derwent Avenue Barnet EN4 8LZ · premises record
Not required
2016-08-02
More
Prior Notification (Householder)
Roof extension involving a rear dormer and 2 additional rooflights to the front elevation to facilitate a loft conversion
80 Derwent Avenue Barnet EN4 8LZ · premises record
Approved
2016-08-02
More
Proposed Lawful Development Certificate
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 33 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 33 of 33 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 33 of 33 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 29 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 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 1 application
Case officer on 3 applications
Case officer on 2 applications
Case officer on 2 applications
Show all 10 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
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent29 applications and 29 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy17 EPC records; ratings C: 4, D: 9, E: 4.
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.
5 intent signals recorded in this postcode
Repeat sale · Beatable refusal · Long hold
Subscribe to see the signals →Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.