Postcode record · Barnet
N12 8DD.
N12 8DD has 54 known premises and 20 planning records — 17 approved of 20 decided (85%). 30 EPC records.
Postcode N12 8DD · boundary not held, centred on the postcodeApprovedRefusedOther26 exact26 on the map — every match
At a glance · this postcodeBarnet profile →
54
Premises
known addresses (UPRNs)
20
Applications
20 decided
85%
Approval rate
17 approved · 2 refused
30
EPC records
ratings C 14 · D 12 · E 4
26
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?
N12 8DD has 54 known premises and 20 planning records — 17 approved of 20 decided (85%). 30 EPC records.
Premises (18 of 54 shown)
Name
Details
UPRN 200032290
UPRN 200032291
UPRN 200032292
UPRN 200032293
UPRN 200032294
UPRN 200032295
UPRN 200032296
UPRN 200032297
UPRN 200032298
UPRN 200032299
UPRN 200032290
UPRN 200032291
UPRN 200032292
Show all 10 rows
UPRN 200032293
UPRN 200032294
UPRN 200032295
UPRN 200032296
UPRN 200032297
UPRN 200032298
UPRN 200032299
Planning
What happened?
20 planning applications across the postcode; 17 approved of 20 decided (85%). Latest 20 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey rear extension with 3no. rooflights following demolition of the existing conservatory
29 Derby Avenue London N12 8DD · premises record
Householder Application
Approved
2025-04-25
Roof extension involving rear dormer window.
29 Derby Avenue London N12 8DD · premises record
Proposed Lawful Development Certificate
Approved
2025-02-25
Installation of 1no. green Virgin Media cabinet
S/O 1A Derby Avenue London N12 8DD · premises record
Licence Notification
Not required
2024-12-03
Use as 2no. self-contained flats
26 Derby Avenue London N12 8DD · premises record
Existing Lawful Development Certificate
Approved
2024-04-26
Roof extension involving rear dormer window and 3no. front facing rooflights
12 Derby Avenue London N12 8DD · premises record
Proposed Lawful Development Certificate
Approved
2024-01-08
Single storey rear extension with 3no. rooflights and new patio area following demolition of the existing conservatory and installation of zinc cladding to replace existing rear dormer cladding
12 Derby Avenue London N12 8DD · premises record
Householder Application
Approved
2024-01-08
Single storey rear extension with 3no.rooflights and new patio following demolition of the existing kitchen and conservatory. Roof extension involving rear dormer with balustrading and 2no. front facing rooflights
12 Derby Avenue London N12 8DD · premises record
Proposed Lawful Development Certificate
Refused
2023-11-28
Roof extension involving rear dormer window with juliette balcony and 3no. front facing rooflights
27 Derby Avenue London N12 8DD · premises record
Proposed Lawful Development Certificate
Approved
2023-03-16
Roof extension involving rear dormer window with rear windows and 3no front facing rooflights
9 Derby Avenue London N12 8DD · premises record
Proposed Lawful Development Certificate
Approved
2021-09-28
Roof extension involving rear dormer window, 3no. rooflights to front elevation. Single storey rear extension
17 Derby Avenue London N12 8DD · premises record
Applicant Mr Peter Fulton · Agent NJL Design
Proposed Lawful Development Certificate
Approved
2018-01-19
Single storey rear extension with 3no. rooflights following demolition of the existing conservatory
29 Derby Avenue London N12 8DD · premises record
Approved
2025-04-25
More
Householder Application
Roof extension involving rear dormer window.
29 Derby Avenue London N12 8DD · premises record
Approved
2025-02-25
More
Proposed Lawful Development Certificate
Installation of 1no. green Virgin Media cabinet
S/O 1A Derby Avenue London N12 8DD · premises record
Not required
2024-12-03
More
Licence Notification
Show all 10 rows
Use as 2no. self-contained flats
26 Derby Avenue London N12 8DD · premises record
Approved
2024-04-26
More
Existing Lawful Development Certificate
Roof extension involving rear dormer window and 3no. front facing rooflights
12 Derby Avenue London N12 8DD · premises record
Approved
2024-01-08
More
Proposed Lawful Development Certificate
Single storey rear extension with 3no. rooflights and new patio area following demolition of the existing conservatory and installation of zinc cladding to replace existing rear dormer cladding
12 Derby Avenue London N12 8DD · premises record
Approved
2024-01-08
More
Householder Application
Single storey rear extension with 3no.rooflights and new patio following demolition of the existing kitchen and conservatory. Roof extension involving rear dormer with balustrading and 2no. front facing rooflights
12 Derby Avenue London N12 8DD · premises record
Refused
2023-11-28
More
Proposed Lawful Development Certificate
Roof extension involving rear dormer window with juliette balcony and 3no. front facing rooflights
27 Derby Avenue London N12 8DD · premises record
Approved
2023-03-16
More
Proposed Lawful Development Certificate
Roof extension involving rear dormer window with rear windows and 3no front facing rooflights
9 Derby Avenue London N12 8DD · premises record
Approved
2021-09-28
More
Proposed Lawful Development Certificate
Roof extension involving rear dormer window, 3no. rooflights to front elevation. Single storey rear extension
17 Derby Avenue London N12 8DD · premises record
Applicant Mr Peter Fulton · Agent NJL Design
Approved
2018-01-19
More
Proposed Lawful Development Certificate
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 54 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 54 of 54 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 54 of 54 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 20 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 3 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 1 application
Applicant on 3 applications
Applicant on 2 applications
Applicant on 1 application
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 precedent20 applications and 26 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy30 EPC records; ratings C: 14, D: 12, E: 4.
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.