Postcode record · Barnet
NW4 1SL.
NW4 1SL has 68 known premises and 48 planning records — 29 approved of 48 decided (60.4%). 36 EPC records.
Postcode NW4 1SL · boundary not held, centred on the postcodeApprovedRefusedOther48 exact5 approximate53 on the map — every match
At a glance · this postcodeBarnet profile →
68
Premises
known addresses (UPRNs)
48
Applications
48 decided
60.4%
Approval rate
29 approved · 12 refused
36
EPC records
ratings C 9 · D 23 · E 3 · F 1
53
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?
NW4 1SL has 68 known premises and 48 planning records — 29 approved of 48 decided (60.4%). 36 EPC records.
Premises (18 of 68 shown)
Name
Details
UPRN 200110917
UPRN 200110919
UPRN 200110921
UPRN 200110923
UPRN 200110924
UPRN 200110925
UPRN 200110926
UPRN 200110927
UPRN 200110933
UPRN 200110934
UPRN 200110917
UPRN 200110919
UPRN 200110921
Show all 10 rows
UPRN 200110923
UPRN 200110924
UPRN 200110925
UPRN 200110926
UPRN 200110927
UPRN 200110933
UPRN 200110934
Planning
What happened?
48 planning applications across the postcode; 29 approved of 48 decided (60.4%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Conversion of the existing dwelling into 3no. self-contained flats including part single, part two storey rear extension with 4no. flat rooflights, roof extension including rear dormer window with juliette balcony and 3no. front facing rooflights. Associated amenity space, refuse/recycling storage, cycle store and off-street parking
19 Sunny Gardens Road London NW4 1SL · premises record
Full Application
Refused
2025-10-16
Roof extension involving rear dormer windows and 3no. front-facing rooflights
37 Sunny Gardens Road London NW4 1SL · premises record
Proposed Lawful Development Certificate
Approved
2025-06-18
Conversion of existing property into 3no. self-contained flats including, part single, part two storey rear extension, roof extension including rear dormer window and 3no. rooflights to front roofslope. Associated amenity space, refuse storage, cycle store and off-street parking
19 Sunny Gardens Road London NW4 1SL · premises record
Full
Refused
2024-09-16
Single storey rear extension with 2no. rooflights
19 Sunny Gardens Road London NW4 1SL · premises record
Householder Application
Approved
2024-03-27
Single storey rear extension with a proposed depth of 6m, maximum height of 2.92m and eaves height of 2.92m
19 Sunny Gardens Road London NW4 1SL · premises record
Prior Approval
Not required
2024-01-19
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall, maximum height of 3.02 metres and eaves height of 2.93 metres.
19 Sunny Gardens Road London NW4 1SL · premises record
Prior Notification (Householder)
Not required
2023-10-16
Single storey rear extension with a depth of 6.00m, maximum height of 3.20m and eaves height of 2.93m
19 Sunny Gardens Road London NW4 1SL · premises record
Prior Notification (Householder)
Refused
2023-07-26
Roof extension involving rear dormer and 3no. front facing rooflights
19 Sunny Gardens Road London NW4 1SL · premises record
Proposed Lawful Development Certificate
Approved
2023-07-06
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall, maximum height of 3.20 metres and eaves height of 2.93 metres.
19 Sunny Gardens Road London NW4 1SL · premises record
Prior Notification (Householder)
Withdrawn
2023-06-13
Single storey rear extension measuring 6.00 metres in depth beyond the original rear wall, a maximum height of 3.00 metres and an eaves height of 2.93 metres, following partial demolition of existing outrigger.
25 Sunny Gardens Road London NW4 1SL · premises record
Prior Approval
Not required
2022-03-25
Conversion of the existing dwelling into 3no. self-contained flats including part single, part two storey rear extension with 4no. flat rooflights, roof extension including rear dormer window with juliette balcony and 3no. front facing rooflights. Associated amenity space, refuse/recycling storage, cycle store and off-street parking
19 Sunny Gardens Road London NW4 1SL · premises record
Refused
2025-10-16
More
Full Application
Roof extension involving rear dormer windows and 3no. front-facing rooflights
37 Sunny Gardens Road London NW4 1SL · premises record
Approved
2025-06-18
More
Proposed Lawful Development Certificate
Conversion of existing property into 3no. self-contained flats including, part single, part two storey rear extension, roof extension including rear dormer window and 3no. rooflights to front roofslope. Associated amenity space, refuse storage, cycle store and off-street parking
19 Sunny Gardens Road London NW4 1SL · premises record
Refused
2024-09-16
More
Full
Show all 10 rows
Single storey rear extension with 2no. rooflights
19 Sunny Gardens Road London NW4 1SL · premises record
Approved
2024-03-27
More
Householder Application
Single storey rear extension with a proposed depth of 6m, maximum height of 2.92m and eaves height of 2.92m
19 Sunny Gardens Road London NW4 1SL · premises record
Not required
2024-01-19
More
Prior Approval
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall, maximum height of 3.02 metres and eaves height of 2.93 metres.
19 Sunny Gardens Road London NW4 1SL · premises record
Not required
2023-10-16
More
Prior Notification (Householder)
Single storey rear extension with a depth of 6.00m, maximum height of 3.20m and eaves height of 2.93m
19 Sunny Gardens Road London NW4 1SL · premises record
Refused
2023-07-26
More
Prior Notification (Householder)
Roof extension involving rear dormer and 3no. front facing rooflights
19 Sunny Gardens Road London NW4 1SL · premises record
Approved
2023-07-06
More
Proposed Lawful Development Certificate
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall, maximum height of 3.20 metres and eaves height of 2.93 metres.
19 Sunny Gardens Road London NW4 1SL · premises record
Withdrawn
2023-06-13
More
Prior Notification (Householder)
Single storey rear extension measuring 6.00 metres in depth beyond the original rear wall, a maximum height of 3.00 metres and an eaves height of 2.93 metres, following partial demolition of existing outrigger.
25 Sunny Gardens Road London NW4 1SL · premises record
Not required
2022-03-25
More
Prior Approval
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 68 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 68 of 68 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 68 of 68 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).
Footpath From Sunningfields Road To Sunny Gardens Road0 mChurch Walk0 mSunny Gardens Road0 mFootpath From Sunny Gardens Road To Downage7 mFuller Street33 mSunningfields Road44 mFootpath From Church Terrace To Sunningfields Road50 m
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 5 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
Agent on 5 applications
Agent on 3 applications
Agent on 1 application
Applicant on 5 applications
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 5 applications
Agent on 3 applications
Agent on 1 application
Development
What could it become?
Planning precedent48 applications and 53 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy36 EPC records; ratings C: 9, D: 23, E: 3, 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
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.
13 intent signals recorded in this postcode
Beatable refusal · Repeat sale · Price decline · EPC F/G · Long hold · HMO licensed · Ageing director
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.