Postcode record · Barnet
NW7 3QB.
NW7 3QB has 18 known premises and 21 planning records — 16 approved of 21 decided (76.2%). 9 EPC records.
Postcode NW7 3QB · boundary not held, centred on the postcodeApprovedRefusedOther21 exact21 on the map — every match
At a glance · this postcodeBarnet profile →
18
Premises
known addresses (UPRNs)
21
Applications
21 decided
76.2%
Approval rate
16 approved · 1 refused
9
EPC records
ratings C 3 · D 5 · E 1
21
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?
NW7 3QB has 18 known premises and 21 planning records — 16 approved of 21 decided (76.2%). 9 EPC records.
Premises
Name
Details
UPRN 200101924
UPRN 200101925
UPRN 200101927
UPRN 200101930
UPRN 200101932
UPRN 200101934
UPRN 200101937
UPRN 200101939
UPRN 200101941
UPRN 200101943
UPRN 200101924
UPRN 200101925
UPRN 200101927
Show all 10 rows
UPRN 200101930
UPRN 200101932
UPRN 200101934
UPRN 200101937
UPRN 200101939
UPRN 200101941
UPRN 200101943
Planning
What happened?
21 planning applications across the postcode; 16 approved of 21 decided (76.2%). Latest 21 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Roof extension involving removal of the existing side and rear dormer window and new hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window. Demolition of the existing chimney. Single storey front porch extension. Demolition of the existing garage. Alterations to the existing driveway including removal of side boundary wall
29 Sefton Avenue London NW7 3QB · premises record
Proposed Lawful Development Certificate
Approved
2026-02-16
Roof extension involving removal of the existing side and rear dormer window and new hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window. Demolition of the existing chimney. Single storey front porch extension. Demolition of the existing garage. Alterations to the existing driveway including removal of side boundary wall
29 Sefton Avenue London NW7 3QB · premises record
Proposed Lawful Development Certificate
Refused
2025-12-22
Non material amendment to planning permission 25/3239/HSE dated 01/10/2025 for 'First floor side extension. Roof extension involving hip to gable, rear dormer with glass balustrade for the juliette balcony and 3no. front facing rooflights. Changes to roof tiles and fenestration' Amendments includes removal of existing chimney and adjustment to front facing rooflights
31 Sefton Avenue London NW7 3QB · premises record
Non Material Amendment
Approved
2025-12-19
First floor side extension. Roof extension involving hip to gable, rear dormer with glass balustrade for the juliette balcony and 3no. front facing rooflights. Changes to roof tiles and fenestration
31 Sefton Avenue London NW7 3QB · premises record
Householder Application
Approved
2025-08-04
Single storey side infill extension and alteration to existing access steps
31 Sefton Avenue London NW7 3QB · premises record
Householder Application
Approved
2020-06-26
Single storey side infill extension and alteration to existing access steps (AMENDED DESCRIPTION).
31 Sefton Avenue London NW7 3QB · premises record
Householder Application
Approved
2020-01-21
Single storey rear extension with a proposed depth of 6 metres from original rear wall, eaves height of 3 metres and maximum height of 3.7 metres.
11 Sefton Avenue London NW7 3QB · premises record
Applicant Harein Patel · Officer James Kavanagh
Prior Notification (Householder)
Not required
2019-09-23
Part single, part two storey side and rear extension
19 Sefton Avenue London NW7 3QB · premises record
Applicant Mr & Mrs Brian and Fiona Thomas · Agent ew.arch chartered architect · Officer Sofie Fieldsend
Householder Application
Approved
2016-07-15
Single storey rear extension with a proposed depth of 4.5 metres from the original rear wall. Eaves height of 3 metres and maximum height of 3.25 metres
17 Sefton Avenue London NW7 3QB · premises record
Prior Notification (Householder)
Not required
2015-07-06
Single storey rear extension with a proposed depth of 6 metres from original rear wall, eaves height of 3 metres and maximum height of 3.4 metres
11 Sefton Avenue London NW7 3QB · premises record
Prior Notification (Householder)
Not required
2015-06-11
Roof extension involving removal of the existing side and rear dormer window and new hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window. Demolition of the existing chimney. Single storey front porch extension. Demolition of the existing garage. Alterations to the existing driveway including removal of side boundary wall
29 Sefton Avenue London NW7 3QB · premises record
Approved
2026-02-16
More
Proposed Lawful Development Certificate
Roof extension involving removal of the existing side and rear dormer window and new hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window. Demolition of the existing chimney. Single storey front porch extension. Demolition of the existing garage. Alterations to the existing driveway including removal of side boundary wall
29 Sefton Avenue London NW7 3QB · premises record
Refused
2025-12-22
More
Proposed Lawful Development Certificate
Non material amendment to planning permission 25/3239/HSE dated 01/10/2025 for 'First floor side extension. Roof extension involving hip to gable, rear dormer with glass balustrade for the juliette balcony and 3no. front facing rooflights. Changes to roof tiles and fenestration' Amendments includes removal of existing chimney and adjustment to front facing rooflights
31 Sefton Avenue London NW7 3QB · premises record
Approved
2025-12-19
More
Non Material Amendment
Show all 10 rows
First floor side extension. Roof extension involving hip to gable, rear dormer with glass balustrade for the juliette balcony and 3no. front facing rooflights. Changes to roof tiles and fenestration
31 Sefton Avenue London NW7 3QB · premises record
Approved
2025-08-04
More
Householder Application
Single storey side infill extension and alteration to existing access steps
31 Sefton Avenue London NW7 3QB · premises record
Approved
2020-06-26
More
Householder Application
Single storey side infill extension and alteration to existing access steps (AMENDED DESCRIPTION).
31 Sefton Avenue London NW7 3QB · premises record
Approved
2020-01-21
More
Householder Application
Single storey rear extension with a proposed depth of 6 metres from original rear wall, eaves height of 3 metres and maximum height of 3.7 metres.
11 Sefton Avenue London NW7 3QB · premises record
Applicant Harein Patel · Officer James Kavanagh
Not required
2019-09-23
More
Prior Notification (Householder)
Part single, part two storey side and rear extension
19 Sefton Avenue London NW7 3QB · premises record
Applicant Mr & Mrs Brian and Fiona Thomas · Agent ew.arch chartered architect · Officer Sofie Fieldsend
Approved
2016-07-15
More
Householder Application
Single storey rear extension with a proposed depth of 4.5 metres from the original rear wall. Eaves height of 3 metres and maximum height of 3.25 metres
17 Sefton Avenue London NW7 3QB · premises record
Not required
2015-07-06
More
Prior Notification (Householder)
Single storey rear extension with a proposed depth of 6 metres from original rear wall, eaves height of 3 metres and maximum height of 3.4 metres
11 Sefton Avenue London NW7 3QB · premises record
Not required
2015-06-11
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 18 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 18 of 18 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 18 of 18 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 21 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 3 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 3 applications
Applicant on 2 applications
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Development
What could it become?
Planning precedent21 applications and 21 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy9 EPC records; ratings C: 3, D: 5, E: 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.