Postcode record · Barnet
N3 3PJ.
N3 3PJ has 27 known premises and 67 planning records — 51 approved of 65 decided (78.5%). 15 EPC records.
Postcode N3 3PJ · boundary not held, centred on the postcodeApprovedRefusedOther67 exact67 on the map — every match
At a glance · this postcodeBarnet profile →
27
Premises
known addresses (UPRNs)
67
Applications
65 decided
78.5%
Approval rate
51 approved · 10 refused
15
EPC records
ratings B 1 · C 4 · D 4 · E 5 · F 1
67
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?
N3 3PJ has 27 known premises and 67 planning records — 51 approved of 65 decided (78.5%). 15 EPC records.
Premises (18 of 27 shown)
Name
Details
UPRN 200003036
UPRN 200003037
UPRN 200003038
UPRN 200003039
UPRN 200003040
UPRN 200003041
UPRN 200003042
UPRN 200003043
UPRN 200003044
UPRN 200003045
UPRN 200003036
UPRN 200003037
UPRN 200003038
Show all 10 rows
UPRN 200003039
UPRN 200003040
UPRN 200003041
UPRN 200003042
UPRN 200003043
UPRN 200003044
UPRN 200003045
Planning
What happened?
67 planning applications across the postcode; 51 approved of 65 decided (78.5%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey rear extension with a proposed depth of 8.00m from original rear wall, maximum height of 3.00m and an eaves height of between 2.77m and 2.83m
8 Allandale Avenue London N3 3PJ · premises record
Prior Notification (Householder)
Refused
2026-02-18
Use of the existing ancillary swimming pool building for commercial operations (Retrospective application)
30 Allandale Avenue London N3 3PJ · premises record
Retention/Continued Use
Refused
2025-02-11
Erection of a single storey rear extension measuring 6.00 metres in depth from the original rear wall, 4.00 metres maximum height and eaves height of 3.00 metres. Following demolition of existing store.
2A Allandale Avenue London N3 3PJ · premises record
Prior Notification (Householder)
Not required
2024-11-20
Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 4.00 metres and eaves height of 3.00 metres. Following demolition of store.
2A Allandale Avenue London N3 3PJ · premises record
Prior Notification (Householder)
Not required
2024-11-06
Single storey front extension. Single storey rear extension and new raised patio. Alterations and extensions to the roof including the 1no. rear dormer window and 3no front facing rooflights Creation of a new front lightwell. Alterations to hard and soft landscaping to front. Alterations to the fenestration on the front and rear elevations (amended description)
2A Allandale Avenue London N3 3PJ · premises record
Householder
Approved
2024-09-25
Roof extension involving rear dormer window and 2no. front facing rooflights
2A Allandale Avenue London N3 3PJ · premises record
Proposed Lawful Development Certificate
Approved
2024-08-09
Single Storey rear extension with a proposed depth of 6.00 metres, maximum height of 4 metres and an eaves height of 3.00 metres. Following demolition of storage.
2A Allandale Avenue London N3 3PJ · premises record
Prior Notification (Householder)
Not required
2024-08-09
Installation of 16 no. solar panels to second floor flat roof. Roof extension involving rear dormer window with juliette balcony and 2no. front facing rooflights. Upper ground floor side extension with 1no. rooflight. Replacement of windows and doors with double glazing. Conversion of the existing garage into habitable room. Creation of a lightwell by filling up part of the existing driveway ramp to lower ground, floor. Removal of side chimney. Installation of 3no external air conditioning units. Demolition of the existing upper ground floor rear conservatory. New front hardstanding and vehicular access to provide off-street parking. Alterations to front landscaping. (amended description)
3A Allandale Avenue London N3 3PJ · premises record
Householder Application
Approved
2023-10-02
New front hardstanding and vehicular access to provide off-street parking. Alterations to front landscaping
3A Allandale Avenue London N3 3PJ · premises record
Householder Application
Approved
2023-03-03
Roof extension involving rear dormer window with juliette balcony and 2no. front facing rooflights. Upper ground floor side extension with 1no. rooflight. Replacement of windows and doors with double glazing. Conversion of the existing garage into habitable room. Creation of a lightwell by filling up part of the existing driveway ramp to lower ground, floor. Removal of side chimney. Installation of 3no external air conditioning units. Demolition of the existing upper ground floor rear conservatory. (amended description)
3A Allandale Avenue London N3 3PJ · premises record
Householder Application
Approved
2022-12-19
Single storey rear extension with a proposed depth of 8.00m from original rear wall, maximum height of 3.00m and an eaves height of between 2.77m and 2.83m
8 Allandale Avenue London N3 3PJ · premises record
Refused
2026-02-18
More
Prior Notification (Householder)
Use of the existing ancillary swimming pool building for commercial operations (Retrospective application)
30 Allandale Avenue London N3 3PJ · premises record
Refused
2025-02-11
More
Retention/Continued Use
Erection of a single storey rear extension measuring 6.00 metres in depth from the original rear wall, 4.00 metres maximum height and eaves height of 3.00 metres. Following demolition of existing store.
2A Allandale Avenue London N3 3PJ · premises record
Not required
2024-11-20
More
Prior Notification (Householder)
Show all 10 rows
Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 4.00 metres and eaves height of 3.00 metres. Following demolition of store.
2A Allandale Avenue London N3 3PJ · premises record
Not required
2024-11-06
More
Prior Notification (Householder)
Single storey front extension. Single storey rear extension and new raised patio. Alterations and extensions to the roof including the 1no. rear dormer window and 3no front facing rooflights Creation of a new front lightwell. Alterations to hard and soft landscaping to front. Alterations to the fenestration on the front and rear elevations (amended description)
2A Allandale Avenue London N3 3PJ · premises record
Approved
2024-09-25
More
Householder
Roof extension involving rear dormer window and 2no. front facing rooflights
2A Allandale Avenue London N3 3PJ · premises record
Approved
2024-08-09
More
Proposed Lawful Development Certificate
Single Storey rear extension with a proposed depth of 6.00 metres, maximum height of 4 metres and an eaves height of 3.00 metres. Following demolition of storage.
2A Allandale Avenue London N3 3PJ · premises record
Not required
2024-08-09
More
Prior Notification (Householder)
Installation of 16 no. solar panels to second floor flat roof. Roof extension involving rear dormer window with juliette balcony and 2no. front facing rooflights. Upper ground floor side extension with 1no. rooflight. Replacement of windows and doors with double glazing. Conversion of the existing garage into habitable room. Creation of a lightwell by filling up part of the existing driveway ramp to lower ground, floor. Removal of side chimney. Installation of 3no external air conditioning units. Demolition of the existing upper ground floor rear conservatory. New front hardstanding and vehicular access to provide off-street parking. Alterations to front landscaping. (amended description)
3A Allandale Avenue London N3 3PJ · premises record
Approved
2023-10-02
More
Householder Application
New front hardstanding and vehicular access to provide off-street parking. Alterations to front landscaping
3A Allandale Avenue London N3 3PJ · premises record
Approved
2023-03-03
More
Householder Application
Roof extension involving rear dormer window with juliette balcony and 2no. front facing rooflights. Upper ground floor side extension with 1no. rooflight. Replacement of windows and doors with double glazing. Conversion of the existing garage into habitable room. Creation of a lightwell by filling up part of the existing driveway ramp to lower ground, floor. Removal of side chimney. Installation of 3no external air conditioning units. Demolition of the existing upper ground floor rear conservatory. (amended description)
3A Allandale Avenue London N3 3PJ · premises record
Approved
2022-12-19
More
Householder Application
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 27 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 27 of 27 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 27 of 27 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 30 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 4 applications
Applicant on 4 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 5 applications
Agent on 4 applications
Agent on 1 application
Agent on 1 application
Applicant on 4 applications
Applicant on 4 applications
Applicant on 2 applications
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 5 applications
Agent on 4 applications
Agent on 1 application
Agent on 1 application
Development
What could it become?
Planning precedent67 applications and 67 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy15 EPC records; ratings B: 1, C: 4, D: 4, E: 5, F: 1.
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
The Developer PlanOwnership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
Thinking about a project here?
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.