Postcode record · Westminster
W9 1NN.
W9 1NN has 23 known premises and 10 planning records — 7 approved of 8 decided (87.5%). 17 EPC records.
Postcode W9 1NN · boundary not held, centred on the postcodeApprovedRefusedOther10 exact10 on the map — every match
At a glance · this postcodeWestminster profile →
23
Premises
known addresses (UPRNs)
10
Applications
8 decided
87.5%
Approval rate
7 approved · 1 refused
17
EPC records
ratings C 7 · D 8 · E 2
10
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?
W9 1NN has 23 known premises and 10 planning records — 7 approved of 8 decided (87.5%). 17 EPC records.
Premises (18 of 23 shown)
Name
Details
UPRN 10033557815
UPRN 100022749413
UPRN 100023509652
UPRN 100023509653
UPRN 100023509654
UPRN 100023509655
UPRN 100023509656
UPRN 100023509657
UPRN 100023509658
UPRN 100023509659
UPRN 10033557815
UPRN 100022749413
UPRN 100023509652
Show all 10 rows
UPRN 100023509653
UPRN 100023509654
UPRN 100023509655
UPRN 100023509656
UPRN 100023509657
UPRN 100023509658
UPRN 100023509659
Planning
What happened?
10 planning applications across the postcode; 7 approved of 8 decided (87.5%). Latest 10 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Replace existing windows with new timber double glazed sash windows (Linked to 25/01435/FULL)
2 Elgin Mews North London W9 1NN · premises record
Listed Building Consent
Unknown
2025-03-04
Replace existing windows with new timber double glazed sash windows. (Linked to 25/01436/LBC)
2 Elgin Mews North London W9 1NN · premises record
Officer Shui-Fung Siu
Full Planning Permission Application
Refused
2025-03-04
External and internal alterations including removal of roof and water tank; construction of new roof with rooflight; addition of PVs and integrated air con system; construction of sunken roof terrace accessed via a lightwell formed within the existing building footprint; replacement windows; entrance door and security gates; repair work to facades; internal alterations to all floors; and all in connection with enlarging existing flat. (Linked with 22/05242/FULL)
21 Elgin Mews North London W9 1NN · premises record
Officer Kimberley Davies
Listed Building Consent Application
Approved
2022-08-02
External and internal alterations including removal of roof and water tank; construction of new roof with rooflight; addition of PVs and integrated air con system; construction of sunken roof terrace accessed via a lightwell formed within the existing building footprint; replacement windows; entrance door and security gates; repair work to facades; internal alterations to all floors; and all in connection with enlarging existing flat. (Linked with 22/05243/LBC)
21 Elgin Mews North London W9 1NN · premises record
Full Planning Permission Application
Approved
2022-08-02
External and internal alterations including replacement windows, removal of roof and water tank, construction of new roof with rooflights and sunken roof terrace accessed via a lightwell formed within the existing building footprint, replacement windows and security gates , anti bird wire, repair work to facades, internal alterations to all floors, all in connection with enlarging existing flat. (Linked to 22/01117/FULL)
21 Elgin Mews North London W9 1NN · premises record
Listed Building Consent Application
Approved
2022-02-21
Installation of replacement windows and doors at second floor level to front elevation.
5 Elgin Mews North London W9 1NN · premises record
Officer Stuart Croll
Certificate of Lawfulness (existing)
Approved
2018-12-26
Installation of replacement windows at second floor, alterations to soil pipes and partial enclosure of garage.
5 Elgin Mews North London W9 1NN · premises record
Officer Aaron Henecke
Full Planning Permission Application
Withdrawn
2018-10-05
Retention of minor internal alterations at ground, first and second floor level.
21 Elgin Mews North London W9 1NN · premises record
Officer Rachel Haworth
Listed Building Consent Application
Approved
2004-05-17
Variuos internal alterations to listed building comprising replacement of stairs, remove partitions, re-arrange w.c, take walls back to existing structure.
1 Elgin Mews North London W9 1NN · premises record
Officer Helen Stratton
Listed Building Consent Application
Approved
2001-01-02
External and internal alterations including replacement windows, removal of roof and water tank, construction of new roof with rooflights and sunken roof terrace accessed via a lightwell formed within the existing building footprint, replacement windows and security gates , anti bird wire, repair work to facades, internal alterations to all floors, all in connection with enlarging existing flat. (Linked to 22/01260/LBC)
21 Elgin Mews North London W9 1NN · premises record
Full Planning Permission Application
Approved
—
Replace existing windows with new timber double glazed sash windows (Linked to 25/01435/FULL)
2 Elgin Mews North London W9 1NN · premises record
Unknown
2025-03-04
More
Listed Building Consent
Replace existing windows with new timber double glazed sash windows. (Linked to 25/01436/LBC)
2 Elgin Mews North London W9 1NN · premises record
Officer Shui-Fung Siu
Refused
2025-03-04
More
Full Planning Permission Application
External and internal alterations including removal of roof and water tank; construction of new roof with rooflight; addition of PVs and integrated air con system; construction of sunken roof terrace accessed via a lightwell formed within the existing building footprint; replacement windows; entrance door and security gates; repair work to facades; internal alterations to all floors; and all in connection with enlarging existing flat. (Linked with 22/05242/FULL)
21 Elgin Mews North London W9 1NN · premises record
Officer Kimberley Davies
Approved
2022-08-02
More
Listed Building Consent Application
Show all 10 rows
External and internal alterations including removal of roof and water tank; construction of new roof with rooflight; addition of PVs and integrated air con system; construction of sunken roof terrace accessed via a lightwell formed within the existing building footprint; replacement windows; entrance door and security gates; repair work to facades; internal alterations to all floors; and all in connection with enlarging existing flat. (Linked with 22/05243/LBC)
21 Elgin Mews North London W9 1NN · premises record
Approved
2022-08-02
More
Full Planning Permission Application
External and internal alterations including replacement windows, removal of roof and water tank, construction of new roof with rooflights and sunken roof terrace accessed via a lightwell formed within the existing building footprint, replacement windows and security gates , anti bird wire, repair work to facades, internal alterations to all floors, all in connection with enlarging existing flat. (Linked to 22/01117/FULL)
21 Elgin Mews North London W9 1NN · premises record
Approved
2022-02-21
More
Listed Building Consent Application
Installation of replacement windows and doors at second floor level to front elevation.
5 Elgin Mews North London W9 1NN · premises record
Officer Stuart Croll
Approved
2018-12-26
More
Certificate of Lawfulness (existing)
Installation of replacement windows at second floor, alterations to soil pipes and partial enclosure of garage.
5 Elgin Mews North London W9 1NN · premises record
Officer Aaron Henecke
Withdrawn
2018-10-05
More
Full Planning Permission Application
Retention of minor internal alterations at ground, first and second floor level.
21 Elgin Mews North London W9 1NN · premises record
Officer Rachel Haworth
Approved
2004-05-17
More
Listed Building Consent Application
Variuos internal alterations to listed building comprising replacement of stairs, remove partitions, re-arrange w.c, take walls back to existing structure.
1 Elgin Mews North London W9 1NN · premises record
Officer Helen Stratton
Approved
2001-01-02
More
Listed Building Consent Application
External and internal alterations including replacement windows, removal of roof and water tank, construction of new roof with rooflights and sunken roof terrace accessed via a lightwell formed within the existing building footprint, replacement windows and security gates , anti bird wire, repair work to facades, internal alterations to all floors, all in connection with enlarging existing flat. (Linked to 22/01260/LBC)
21 Elgin Mews North London W9 1NN · premises record
Approved
—
More
Full Planning Permission Application
Building control
Building-control records are not yet collected for Westminster — 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 23 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Basement Development Permitted Rights Removed · reference 23/00006/REG_4 · covers 23 of 23 premises. Some normally permitted changes may require planning permission.
Conservation Area
Maida Vale · reference 08/01080/CONARA · covers 23 of 23 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Article 4 Direction Area
Article 4 Basement Development Permitted Rights Removed · reference 23/00006/REG_4 · covers 23 of 23 premises. Some normally permitted changes may require planning permission.
Conservation Area
Maida Vale · reference 08/01080/CONARA · covers 23 of 23 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
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 10 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 2 applications
Applicant on 1 application
Agent on 3 applications
Case officer on 4 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Applicant on 2 applications
Applicant on 1 application
Agent on 3 applications
Show all 9 rows
Case officer on 4 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent10 applications and 10 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy17 EPC records; ratings C: 7, D: 8, E: 2.
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.
4 intent signals recorded in this postcode
Lapsed consent · Long hold · Ageing director
Subscribe to see the signals →Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.