Postcode record · Barnet
N20 8DB.
N20 8DB has 30 known premises and 55 planning records — 37 approved of 54 decided (68.5%). 16 EPC records.
Postcode N20 8DB · boundary not held, centred on the postcodeApprovedRefusedOther55 exact55 on the map — every match
At a glance · this postcodeBarnet profile →
30
Premises
known addresses (UPRNs)
55
Applications
54 decided
68.5%
Approval rate
37 approved · 9 refused
16
EPC records
ratings C 5 · D 7 · E 3 · F 1
55
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 8DB has 30 known premises and 55 planning records — 37 approved of 54 decided (68.5%). 16 EPC records.
Premises (18 of 30 shown)
Name
Details
UPRN 200105179
UPRN 200105181
UPRN 200105183
UPRN 200105185
UPRN 200105187
UPRN 200105189
UPRN 200105191
UPRN 200105193
UPRN 200105195
UPRN 200105197
UPRN 200105179
UPRN 200105181
UPRN 200105183
Show all 10 rows
UPRN 200105185
UPRN 200105187
UPRN 200105189
UPRN 200105191
UPRN 200105193
UPRN 200105195
UPRN 200105197
Planning
What happened?
55 planning applications across the postcode; 37 approved of 54 decided (68.5%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey side and rear extension following the demolition of the existing garage and conservatory. New front dormer window
46 Southway London N20 8DB · premises record
Householder Application
Pending Consideration
2026-04-14
Roof extension involving hip to gable with juliette balcony and 1no. front facing rooflights Conversion of the existing garage to habitable room insertion of window to replace the garage door
46 Southway London N20 8DB · premises record
Proposed Lawful Development Certificate
Approved
2026-03-04
Roof extension involving hip to gable with juliette balcony and 1no. front facing rooflights. Single storey side extension following the demolition of existing conservatory. Conversion of the existing garage to habitable room insertion of window to replace the garage door. Erection of rear outbuilding
46 Southway London N20 8DB · premises record
Applicant Mr Andrew Green · Officer Lottie Burden
Proposed Lawful Development Certificate
Refused
2026-01-20
Part single, part two-storey side and rear extension with 2no. rear juliette balconies to rear elevation, following demolition of existing garage and conservatory. Roof extension including 1no. dormer window to front, side and rear elevations. Single-storey rear outbuilding/garden room
46 Southway London N20 8DB · premises record
Householder Application
Refused
2025-09-18
Erection of a garden room
30 Southway London N20 8DB · premises record
Proposed Lawful Development Certificate
Approved
2024-04-15
Part single, part two storey side and rear extensions with 2no.rooflights including conversion of the existing garage into habitable room, insertion of door to replace garage door. Single storey rear extension with 2no. rooflights.
30 Southway London N20 8DB · premises record
Householder Application
Approved
2023-11-16
Conversion of existing garage into habitable room including insertion of windows and new flat roof with rooflight to replace existing pitched roof. Single storey rear extension with rooflights and link to garage
68 Southway London N20 8DB · premises record
Householder Application
Approved
2023-09-20
Roof extension involving hip to gable, rear dormer, new side gable window, 1no. front facing rooflight and 3no. rooflights on top of the flat roof. New front porch (Amended Description)
68 Southway London N20 8DB · premises record
Proposed Lawful Development Certificate
Approved
2023-08-01
Erection of a rear outbuilding . New front porch.
56 Southway London N20 8DB · premises record
—
Approved
2022-03-22
Single storey side extension following demolition of existing storage / home office
54 Southway London N20 8DB · premises record
Householder Application
Approved
2022-03-09
Single storey side and rear extension following the demolition of the existing garage and conservatory. New front dormer window
46 Southway London N20 8DB · premises record
Pending Consideration
2026-04-14
More
Householder Application
Roof extension involving hip to gable with juliette balcony and 1no. front facing rooflights Conversion of the existing garage to habitable room insertion of window to replace the garage door
46 Southway London N20 8DB · premises record
Approved
2026-03-04
More
Proposed Lawful Development Certificate
Roof extension involving hip to gable with juliette balcony and 1no. front facing rooflights. Single storey side extension following the demolition of existing conservatory. Conversion of the existing garage to habitable room insertion of window to replace the garage door. Erection of rear outbuilding
46 Southway London N20 8DB · premises record
Applicant Mr Andrew Green · Officer Lottie Burden
Refused
2026-01-20
More
Proposed Lawful Development Certificate
Show all 10 rows
Part single, part two-storey side and rear extension with 2no. rear juliette balconies to rear elevation, following demolition of existing garage and conservatory. Roof extension including 1no. dormer window to front, side and rear elevations. Single-storey rear outbuilding/garden room
46 Southway London N20 8DB · premises record
Refused
2025-09-18
More
Householder Application
Erection of a garden room
30 Southway London N20 8DB · premises record
Approved
2024-04-15
More
Proposed Lawful Development Certificate
Part single, part two storey side and rear extensions with 2no.rooflights including conversion of the existing garage into habitable room, insertion of door to replace garage door. Single storey rear extension with 2no. rooflights.
30 Southway London N20 8DB · premises record
Approved
2023-11-16
More
Householder Application
Conversion of existing garage into habitable room including insertion of windows and new flat roof with rooflight to replace existing pitched roof. Single storey rear extension with rooflights and link to garage
68 Southway London N20 8DB · premises record
Approved
2023-09-20
More
Householder Application
Roof extension involving hip to gable, rear dormer, new side gable window, 1no. front facing rooflight and 3no. rooflights on top of the flat roof. New front porch (Amended Description)
68 Southway London N20 8DB · premises record
Approved
2023-08-01
More
Proposed Lawful Development Certificate
Erection of a rear outbuilding . New front porch.
56 Southway London N20 8DB · premises record
Approved
2022-03-22
More
—
Single storey side extension following demolition of existing storage / home office
54 Southway London N20 8DB · premises record
Approved
2022-03-09
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 30 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 30 of 30 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 30 of 30 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 4 applications
Applicant on 2 applications
Applicant on 2 applications
Applicant on 2 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Agent on 3 applications
Agent on 2 applications
Agent on 2 applications
Applicant on 4 applications
Applicant on 2 applications
Applicant on 2 applications
Show all 10 rows
Applicant on 2 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Agent on 3 applications
Agent on 2 applications
Agent on 2 applications
Development
What could it become?
Planning precedent55 applications and 55 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy16 EPC records; ratings C: 5, D: 7, 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.
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.