Postcode record · Barnet
N20 0NS.
N20 0NS has 26 known premises and 17 planning records — 14 approved of 17 decided (82.4%). 7 EPC records.
Postcode N20 0NS · boundary not held, centred on the postcodeApprovedRefusedOther19 exact19 on the map — every match
At a glance · this postcodeBarnet profile →
26
Premises
known addresses (UPRNs)
17
Applications
17 decided
82.4%
Approval rate
14 approved · 2 refused
7
EPC records
ratings D 2 · E 4 · F 1
19
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?
N20 0NS has 26 known premises and 17 planning records — 14 approved of 17 decided (82.4%). 7 EPC records.
Premises (18 of 26 shown)
Name
Details
UPRN 200106391
UPRN 200106392
UPRN 200106393
UPRN 200106394
UPRN 200106395
UPRN 200106396
UPRN 200106397
UPRN 200106398
UPRN 200106399
UPRN 200106400
UPRN 200106391
UPRN 200106392
UPRN 200106393
Show all 10 rows
UPRN 200106394
UPRN 200106395
UPRN 200106396
UPRN 200106397
UPRN 200106398
UPRN 200106399
UPRN 200106400
Planning
What happened?
17 planning applications across the postcode; 14 approved of 17 decided (82.4%). Latest 17 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey rear extension with 2no. rooflights with new veranda, patio area and access steps into garden
32 St James Close London N20 0NS · premises record
Officer Bradley Carson
Householder Application
Approved
2026-03-23
Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window. Erection of a rear outbuilding following demolition of the existing
4 St James Close London N20 0NS · premises record
Officer Bradley Carson
Householder Application
Approved
2025-12-05
Single storey rear extension with a proposed depth of 5.50 metres, maximum height of 3.00 metres and eaves height of 3.00 metres. Following demolition of existing conservatory and garage.
26 St James Close London N20 0NS · premises record
Officer Muhsin Ahmed
Prior Notification (Householder)
Refused
2025-05-12
Single storey rear extension with 2no rooflights and new patio area
32 St James Close London N20 0NS · premises record
Householder Application
Approved
2025-03-31
Roof extension involving hip to gable, 2no. rear dormer windows and side gable window
20 St James Close London N20 0NS · premises record
Officer Will Collier
Householder Application
Approved
2022-05-05
Conversion of existing roof above ground floor extension to create a roof terrace with timber decking and balustrade and new raised patio in rear garden with associated fencing (amended)
4 St James Close London N20 0NS · premises record
Householder Application
Refused
2018-11-23
Roof extension involving hip to gable, rear dormer window, 2no rear and 3no front rooflights and new gable window to side elevation to facilitate a loft conversion
32 St James Close London N20 0NS · premises record
Applicant Mr Surendra Mehta · Agent Gridline
Householder Application
Approved
2017-10-31
Extension to roof including hip to gable end to both sides with 3no windows to front elevation and 3no roof lights to rear elevation
32 St James Close London N20 0NS · premises record
Officer Athina Gkremi
Proposed Lawful Development Certificate
Approved
2017-09-13
Roof extension involving hip to gable, rear dormer window, 3no. rooflights to front and new gable window to side elevation to facilitate a loft conversion
32 St James Close London N20 0NS · premises record
Applicant Mr Surendra Mehta · Agent gridline
Householder Application
Withdrawn
2017-06-27
Single storey side and rear extension following demolition of existing garage.
12 St James Close, London, N20 0NS · premises record
Householder Application
Approved
2009-03-05
Single storey rear extension with 2no. rooflights with new veranda, patio area and access steps into garden
32 St James Close London N20 0NS · premises record
Officer Bradley Carson
Approved
2026-03-23
More
Householder Application
Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window. Erection of a rear outbuilding following demolition of the existing
4 St James Close London N20 0NS · premises record
Officer Bradley Carson
Approved
2025-12-05
More
Householder Application
Single storey rear extension with a proposed depth of 5.50 metres, maximum height of 3.00 metres and eaves height of 3.00 metres. Following demolition of existing conservatory and garage.
26 St James Close London N20 0NS · premises record
Officer Muhsin Ahmed
Refused
2025-05-12
More
Prior Notification (Householder)
Show all 10 rows
Single storey rear extension with 2no rooflights and new patio area
32 St James Close London N20 0NS · premises record
Approved
2025-03-31
More
Householder Application
Roof extension involving hip to gable, 2no. rear dormer windows and side gable window
20 St James Close London N20 0NS · premises record
Officer Will Collier
Approved
2022-05-05
More
Householder Application
Conversion of existing roof above ground floor extension to create a roof terrace with timber decking and balustrade and new raised patio in rear garden with associated fencing (amended)
4 St James Close London N20 0NS · premises record
Refused
2018-11-23
More
Householder Application
Roof extension involving hip to gable, rear dormer window, 2no rear and 3no front rooflights and new gable window to side elevation to facilitate a loft conversion
32 St James Close London N20 0NS · premises record
Applicant Mr Surendra Mehta · Agent Gridline
Approved
2017-10-31
More
Householder Application
Extension to roof including hip to gable end to both sides with 3no windows to front elevation and 3no roof lights to rear elevation
32 St James Close London N20 0NS · premises record
Officer Athina Gkremi
Approved
2017-09-13
More
Proposed Lawful Development Certificate
Roof extension involving hip to gable, rear dormer window, 3no. rooflights to front and new gable window to side elevation to facilitate a loft conversion
32 St James Close London N20 0NS · premises record
Applicant Mr Surendra Mehta · Agent gridline
Withdrawn
2017-06-27
More
Householder Application
Single storey side and rear extension following demolition of existing garage.
12 St James Close, London, N20 0NS · premises record
Approved
2009-03-05
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 26 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 26 of 26 premises. Some normally permitted changes may require planning permission.
Archaeological Priority Area
Friern Barnet seemed an unlikely area to settle, since there was dense woodland and heavy clay soil at Colney Hatch. It remained covered in wood and scrub until the early 19th century and was a rural area until World War I. However, an early medieval · reference 76761 · covers 24 of 26 premises. Groundworks may require archaeological assessment or investigation.
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 26 of 26 premises. Some normally permitted changes may require planning permission.
Archaeological Priority Area
Friern Barnet seemed an unlikely area to settle, since there was dense woodland and heavy clay soil at Colney Hatch. It remained covered in wood and scrub until the early 19th century and was a rural area until World War I. However, an early medieval · reference 76761 · covers 24 of 26 premises. Groundworks may require archaeological assessment or investigation.
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 17 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
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Case officer on 3 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Case officer on 3 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent17 applications and 19 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy7 EPC records; ratings D: 2, E: 4, 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.