Postcode record · Barnet
N3 3SN.
N3 3SN has 32 known premises and 47 planning records — 31 approved of 47 decided (66%). 16 EPC records.
Postcode N3 3SN · boundary not held, centred on the postcodeApprovedRefusedOther47 exact15 approximate62 on the map — every match
At a glance · this postcodeBarnet profile →
32
Premises
known addresses (UPRNs)
47
Applications
47 decided
66%
Approval rate
31 approved · 14 refused
16
EPC records
ratings C 4 · D 9 · E 2 · F 1
62
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 3SN has 32 known premises and 47 planning records — 31 approved of 47 decided (66%). 16 EPC records.
Premises (18 of 32 shown)
Name
Details
UPRN 200127503
UPRN 200127521
UPRN 200127523
UPRN 200127525
UPRN 200127527
UPRN 200127529
UPRN 200127531
UPRN 200127533
UPRN 200127535
UPRN 200127537
UPRN 200127503
UPRN 200127521
UPRN 200127523
Show all 10 rows
UPRN 200127525
UPRN 200127527
UPRN 200127529
UPRN 200127531
UPRN 200127533
UPRN 200127535
UPRN 200127537
Planning
What happened?
47 planning applications across the postcode; 31 approved of 47 decided (66%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Roof extension involving hip to gable with rear dormer windows, 1no. front, 1no. rear facing rooflight following demolition of existing chimney
39 Windsor Road London N3 3SN · premises record
Officer Lottie Burden
Proposed Lawful Development Certificate
Refused
2026-05-18
Single storey rear extension with new raised patio area following removal of the existing patio area and outrigger building
39 Windsor Road London N3 3SN · premises record
Officer Asha Chhabhaiya
Householder Application
Approved
2025-09-05
1 x Birch - Crown reduce height back to previous reduction points (approx. 3m). Crown reduce spread to balance and shape (approx. 1.5m). Remove deadwood. Standing in T7 of Tree Preservation Order.
21 Windsor Road London N3 3SN · premises record
Officer Terry Wong
Works to TPO trees
Approved
2024-10-10
1 x Sycamore (applicants ref. T1) - Reduce back overhanging branches by approximately 2m to boundary line. Standing in Area A1 of Tree Preservation Order.
Eli Court 35 Windsor Road London N3 3SN · premises record
Officer Jonathan Mills
Works to TPO trees
Approved
2023-10-19
Submission of details of condition 5 (details of privacy screens and balustrades) pursuant to planning permission 22/5963/HSE dated 22/02/2023
45 Windsor Road London N3 3SN · premises record
Officer Natasha Campbell
Conditions
Approved
2023-04-03
1 x Horse Chestnunt - 25% crown Thin. Standing in T2 of Tree Preservation Order. (Amended Proposal)
43 Windsor Road London N3 3SN · premises record
—
Approved
2023-02-24
Excavation and extension of basement level together with single storey rear extension. Conversion of garage into habitable room replacement of garage door with window. New front porch. Installation of 1no. side facing rooflight
45 Windsor Road London N3 3SN · premises record
Officer Natasha Campbell
Householder Application
Approved
2022-12-15
Single storey side extension, including 3no. skylights
19 Windsor Road London N3 3SN · premises record
Householder Application
Approved
2019-08-21
Submission of details of condition 3 (Refuse/recycling) 6 (Sound Insulation) 12 (Cycle parking/storage pursuant to planning permission 16/7510/FUL dated 01/12/16
35 Windsor Road London N3 3SN · premises record
Applicant Mr Daniel Shababo · Officer Tania Sa Cordeiro
Conditions
Approved
2019-01-03
1 x Silver Birch (applicant's ref. T1) - Lift the lower branches by 1 - 1.5 metres and thin by 15%. T7 of Tree Preservation Order
21 Windsor Road London N3 3SN · premises record
Officer Edward Jones
Works to TPO trees
Approved
2018-10-22
Roof extension involving hip to gable with rear dormer windows, 1no. front, 1no. rear facing rooflight following demolition of existing chimney
39 Windsor Road London N3 3SN · premises record
Officer Lottie Burden
Refused
2026-05-18
More
Proposed Lawful Development Certificate
Single storey rear extension with new raised patio area following removal of the existing patio area and outrigger building
39 Windsor Road London N3 3SN · premises record
Officer Asha Chhabhaiya
Approved
2025-09-05
More
Householder Application
1 x Birch - Crown reduce height back to previous reduction points (approx. 3m). Crown reduce spread to balance and shape (approx. 1.5m). Remove deadwood. Standing in T7 of Tree Preservation Order.
21 Windsor Road London N3 3SN · premises record
Officer Terry Wong
Approved
2024-10-10
More
Works to TPO trees
Show all 10 rows
1 x Sycamore (applicants ref. T1) - Reduce back overhanging branches by approximately 2m to boundary line. Standing in Area A1 of Tree Preservation Order.
Eli Court 35 Windsor Road London N3 3SN · premises record
Officer Jonathan Mills
Approved
2023-10-19
More
Works to TPO trees
Submission of details of condition 5 (details of privacy screens and balustrades) pursuant to planning permission 22/5963/HSE dated 22/02/2023
45 Windsor Road London N3 3SN · premises record
Officer Natasha Campbell
Approved
2023-04-03
More
Conditions
1 x Horse Chestnunt - 25% crown Thin. Standing in T2 of Tree Preservation Order. (Amended Proposal)
43 Windsor Road London N3 3SN · premises record
Approved
2023-02-24
More
—
Excavation and extension of basement level together with single storey rear extension. Conversion of garage into habitable room replacement of garage door with window. New front porch. Installation of 1no. side facing rooflight
45 Windsor Road London N3 3SN · premises record
Officer Natasha Campbell
Approved
2022-12-15
More
Householder Application
Single storey side extension, including 3no. skylights
19 Windsor Road London N3 3SN · premises record
Approved
2019-08-21
More
Householder Application
Submission of details of condition 3 (Refuse/recycling) 6 (Sound Insulation) 12 (Cycle parking/storage pursuant to planning permission 16/7510/FUL dated 01/12/16
35 Windsor Road London N3 3SN · premises record
Applicant Mr Daniel Shababo · Officer Tania Sa Cordeiro
Approved
2019-01-03
More
Conditions
1 x Silver Birch (applicant's ref. T1) - Lift the lower branches by 1 - 1.5 metres and thin by 15%. T7 of Tree Preservation Order
21 Windsor Road London N3 3SN · premises record
Officer Edward Jones
Approved
2018-10-22
More
Works to TPO trees
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 32 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 32 of 32 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 32 of 32 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 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Case officer on 7 applications
Case officer on 3 applications
Case officer on 3 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Case officer on 7 applications
Case officer on 3 applications
Case officer on 3 applications
Development
What could it become?
Planning precedent47 applications and 62 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy16 EPC records; ratings C: 4, D: 9, E: 2, 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.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.