Postcode record · Westminster
W1K 3NW.
W1K 3NW has 10 known premises and 14 planning records — 11 approved of 11 decided (100%). 2 EPC records.
Postcode W1K 3NW · boundary not held, centred on the postcodeApprovedRefusedOther14 on the map — every match
At a glance · this postcodeWestminster profile →
10
Premises
known addresses (UPRNs)
14
Applications
11 decided
100%
Approval rate
11 approved · 0 refused
2
EPC records
ratings B 1 · C 1
14
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?
W1K 3NW has 10 known premises and 14 planning records — 11 approved of 11 decided (100%). 2 EPC records.
Premises
Name
Details
UPRN 10033538763
UPRN 10033538764
UPRN 10033584257
UPRN 10033584258
UPRN 10033620873
UPRN 100022782951
UPRN 100023475871
UPRN 100023475873
UPRN 100023608216
UPRN 10033538763
UPRN 10033538764
UPRN 10033584257
Show all 10 rows
UPRN 10033584258
UPRN 10033620873
UPRN 100022782951
UPRN 100023475871
UPRN 100023475873
UPRN 100023608216
Planning
What happened?
14 planning applications across the postcode; 11 approved of 11 decided (100%). Latest 14 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Repair works to street elevations, including terracotta and brick repairs and localised replacement works, treatment of underlying steelwork, and repointing.
121 Mount Street London W1K 3NW · premises record
Officer Ken Powell
Listed Building Consent Application
Approved
2022-12-21
Alterations to pitched roof, windows, doors and installation of PV panels on rear flat roof.
121 Mount Street London W1K 3NW · premises record
Officer Owen Broadway
Listed Building Consent Application
Approved
2016-05-11
Alterations to windows, doors and installation of PV panels on rear flat roof at 4th floor level.
121 Mount Street London W1K 3NW · premises record
Officer Owen Broadway
Full Planning Permission Application
Approved
2016-05-11
Installation of secondary glazing in all windows of Flat 2 (second floor)
Second Floor Flat 121 Mount Street London W1K 3NW · premises record
Officer Ken Powell
Listed Building Consent Application
Approved
2016-04-29
Installation of three extract vents and boiler flu at first floor to the side elevation. Internal alterations at first floor level.
First Floor 121 Mount Street London W1K 3NW · premises record
Officer Matthew Giles
Listed Building Consent Application
Approved
2013-12-06
Use of the first floor to provide 1 x 2 bed flat (Class C3) and installation of three extract vents and boiler flu at first floor to the side elevation.
First Floor 121 Mount Street London W1K 3NW · premises record
Officer Matthew Giles
Full Planning Permission Application
Approved
2013-12-06
Internal alterations to second floor level, including moving doors and infilling door openings and new bathroom.
121 Mount Street London W1K 3NW · premises record
Officer Helen Stratton
Listed Building Consent Application
Approved
2000-11-07
Listed Building Consent Application
Approved
1997-08-07
INTERNAL ALTERATIONS AT GROUND FLOOR LEVEL, REMOVAL OF EXISTING SHOPFRONT. INSTALLATION OF NEW SHOPFRONT.
121 Mount Street London W1K 3NW · premises record
Officer Jim MacDonald
Full Planning Permission Application
Withdrawn
1996-07-09
REMOVAL OF EXISTING SHOPFRONT & REPLACEMENT WITH NEW;RAISING HEIGHT OF FALSE CEILING AT 121A
121 Mount Street London W1K 3NW · premises record
Officer Jim MacDonald
Listed Building Consent Application
Approved
1996-07-09
Repair works to street elevations, including terracotta and brick repairs and localised replacement works, treatment of underlying steelwork, and repointing.
121 Mount Street London W1K 3NW · premises record
Officer Ken Powell
Approved
2022-12-21
More
Listed Building Consent Application
Alterations to pitched roof, windows, doors and installation of PV panels on rear flat roof.
121 Mount Street London W1K 3NW · premises record
Officer Owen Broadway
Approved
2016-05-11
More
Listed Building Consent Application
Alterations to windows, doors and installation of PV panels on rear flat roof at 4th floor level.
121 Mount Street London W1K 3NW · premises record
Officer Owen Broadway
Approved
2016-05-11
More
Full Planning Permission Application
Show all 10 rows
Installation of secondary glazing in all windows of Flat 2 (second floor)
Second Floor Flat 121 Mount Street London W1K 3NW · premises record
Officer Ken Powell
Approved
2016-04-29
More
Listed Building Consent Application
Installation of three extract vents and boiler flu at first floor to the side elevation. Internal alterations at first floor level.
First Floor 121 Mount Street London W1K 3NW · premises record
Officer Matthew Giles
Approved
2013-12-06
More
Listed Building Consent Application
Use of the first floor to provide 1 x 2 bed flat (Class C3) and installation of three extract vents and boiler flu at first floor to the side elevation.
First Floor 121 Mount Street London W1K 3NW · premises record
Officer Matthew Giles
Approved
2013-12-06
More
Full Planning Permission Application
Internal alterations to second floor level, including moving doors and infilling door openings and new bathroom.
121 Mount Street London W1K 3NW · premises record
Officer Helen Stratton
Approved
2000-11-07
More
Listed Building Consent Application
Approved
1997-08-07
More
Listed Building Consent Application
INTERNAL ALTERATIONS AT GROUND FLOOR LEVEL, REMOVAL OF EXISTING SHOPFRONT. INSTALLATION OF NEW SHOPFRONT.
121 Mount Street London W1K 3NW · premises record
Officer Jim MacDonald
Withdrawn
1996-07-09
More
Full Planning Permission Application
REMOVAL OF EXISTING SHOPFRONT & REPLACEMENT WITH NEW;RAISING HEIGHT OF FALSE CEILING AT 121A
121 Mount Street London W1K 3NW · premises record
Officer Jim MacDonald
Approved
1996-07-09
More
Listed Building Consent 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 10 premises each one covers.
Designation
Coverage
Archaeological Priority Area
City of Westminster APA 2.5: Great Estates Summary and Definition The Great Estates APA covers an area bounded by Park Lane to the west, Green Park and St James’s Park to the south, Haymarket, Shaftesbury Avenue, Charing Cross Road and t · reference 76098 · covers 10 of 10 premises. Groundworks may require archaeological assessment or investigation.
Article 4 Direction Area
Article 4 Basement Development Permitted Rights Removed · reference 23/00006/REG_4 · covers 10 of 10 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Article 4 Direction Class E To C3 In Central Activities Zone · reference 23/00004/REG_4 · covers 10 of 10 premises. Some normally permitted changes may require planning permission.
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 10 of 10 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Mayfair · reference CONARA/1270 · covers 10 of 10 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Archaeological Priority Area
City of Westminster APA 2.5: Great Estates Summary and Definition The Great Estates APA covers an area bounded by Park Lane to the west, Green Park and St James’s Park to the south, Haymarket, Shaftesbury Avenue, Charing Cross Road and t · reference 76098 · covers 10 of 10 premises. Groundworks may require archaeological assessment or investigation.
Article 4 Direction Area
Article 4 Basement Development Permitted Rights Removed · reference 23/00006/REG_4 · covers 10 of 10 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Article 4 Direction Class E To C3 In Central Activities Zone · reference 23/00004/REG_4 · covers 10 of 10 premises. Some normally permitted changes may require planning permission.
Show all 5 rows
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 10 of 10 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Mayfair · reference CONARA/1270 · covers 10 of 10 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 14 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Case officer on 4 applications
Case officer on 3 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 4 applications
Case officer on 3 applications
Case officer on 2 applications
Show all 5 rows
Case officer on 2 applications
Case officer on 1 application
Development
What could it become?
Planning precedent14 applications and 14 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy2 EPC records; ratings B: 1, C: 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.
No intent signal is currently recorded in this postcode.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.