Postcode record · Enfield
N21 3SB.
N21 3SB has 42 known premises and 29 planning records — 16 approved of 24 decided (66.7%). 22 EPC records.
Postcode N21 3SB · boundary not held, centred on the postcodeApprovedRefusedOther29 exact29 on the map — every match
At a glance · this postcodeEnfield profile →
42
Premises
known addresses (UPRNs)
29
Applications
24 decided
66.7%
Approval rate
16 approved · 8 refused
22
EPC records
ratings C 6 · D 8 · E 8
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?
N21 3SB has 42 known premises and 29 planning records — 16 approved of 24 decided (66.7%). 22 EPC records.
Premises (18 of 42 shown)
Name
Details
UPRN 207009068
UPRN 207083725
UPRN 207083726
UPRN 207083727
UPRN 207083728
UPRN 207083729
UPRN 207083730
UPRN 207083731
UPRN 207083732
UPRN 207083733
UPRN 207009068
UPRN 207083725
UPRN 207083726
Show all 10 rows
UPRN 207083727
UPRN 207083728
UPRN 207083729
UPRN 207083730
UPRN 207083731
UPRN 207083732
UPRN 207083733
Planning
What happened?
29 planning applications across the postcode; 16 approved of 24 decided (66.7%). Latest 29 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Roof terrace and rear facing patio doors (PART RETROSPECTIVE).
1A Station Road London N21 3SB · premises record
Householder
Refused
2025-07-31
Use of roof terrace and rear facing french doors.
1A Station Road London N21 3SB · premises record
Cert of Lawful Use/Operation - Existing
Refused
2025-04-16
Single storey rear extension 4.06m deep x 3.2m high (3m high to eaves).
13 Station Road London N21 3SB · premises record
Class A HH - Prior Approval
No objection
2024-10-28
Rear and side dormers together with rooflights to the front and side.
3A Station Road London N21 3SB · premises record
Cert of Lawful Use/Operation - Proposed
Approved
2022-02-08
Rear and side dormer windows with front rooflights.
3A Station Road London N21 3SB · premises record
Cert of Lawful Use/Operation - Proposed
Refused
2021-11-04
Rear and side dormers and front rooflight.
3 Station Road Winchmore Hill London N21 3SB · premises record
Cert of Lawful Use/Operation - Proposed
Approved
2019-05-22
Rear and side dormers with gable end and front rooflight
3 Station Road Winchmore Hill London N21 3SB · premises record
Cert of Lawful Use/Operation - Proposed
Refused
2019-01-16
Single storey rear extension pursuant to 16/00064/PRH
3 Station Road Winchmore Hill London N21 3SB · premises record
Cert of Lawful Use/Operation - Proposed
Approved
2016-03-17
Single storey rear extension 5.735m deep x 4m high (3m high to eaves)
3 Station Road Winchmore Hill London N21 3SB · premises record
Class A HH - Prior Approval
No objection
2016-01-08
Single storey rear extension submitted pursuant to prior approval ref: P14-01593PRH.
11 Station Road Winchmore Hill London N21 3SB · premises record
Cert of Lawful Use/Operation - Proposed
Approved
2014-09-17
Roof terrace and rear facing patio doors (PART RETROSPECTIVE).
1A Station Road London N21 3SB · premises record
Refused
2025-07-31
More
Householder
Use of roof terrace and rear facing french doors.
1A Station Road London N21 3SB · premises record
Refused
2025-04-16
More
Cert of Lawful Use/Operation - Existing
Single storey rear extension 4.06m deep x 3.2m high (3m high to eaves).
13 Station Road London N21 3SB · premises record
No objection
2024-10-28
More
Class A HH - Prior Approval
Show all 10 rows
Rear and side dormers together with rooflights to the front and side.
3A Station Road London N21 3SB · premises record
Approved
2022-02-08
More
Cert of Lawful Use/Operation - Proposed
Rear and side dormer windows with front rooflights.
3A Station Road London N21 3SB · premises record
Refused
2021-11-04
More
Cert of Lawful Use/Operation - Proposed
Rear and side dormers and front rooflight.
3 Station Road Winchmore Hill London N21 3SB · premises record
Approved
2019-05-22
More
Cert of Lawful Use/Operation - Proposed
Rear and side dormers with gable end and front rooflight
3 Station Road Winchmore Hill London N21 3SB · premises record
Refused
2019-01-16
More
Cert of Lawful Use/Operation - Proposed
Single storey rear extension pursuant to 16/00064/PRH
3 Station Road Winchmore Hill London N21 3SB · premises record
Approved
2016-03-17
More
Cert of Lawful Use/Operation - Proposed
Single storey rear extension 5.735m deep x 4m high (3m high to eaves)
3 Station Road Winchmore Hill London N21 3SB · premises record
No objection
2016-01-08
More
Class A HH - Prior Approval
Single storey rear extension submitted pursuant to prior approval ref: P14-01593PRH.
11 Station Road Winchmore Hill London N21 3SB · premises record
Approved
2014-09-17
More
Cert of Lawful Use/Operation - Proposed
Building control
Building-control records are not yet collected for Enfield — 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 42 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Borough wide · reference AD17 · covers 42 of 42 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Borough wide · reference AD17 · covers 42 of 42 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
Applicant on 2 applications
Applicant on 2 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 2 applications
Applicant on 2 applications
Applicant on 2 applications
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 precedent29 applications and 29 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy22 EPC records; ratings C: 6, D: 8, E: 8.
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.