Postcode record · Westminster
W1S 1NX.
W1S 1NX has 4 known premises and 5 planning records — 5 approved of 5 decided (100%).
Postcode W1S 1NX · boundary not held, centred on the postcodeApprovedRefusedOther4 exact4 on the map — every match
At a glance · this postcodeWestminster profile →
4
Premises
known addresses (UPRNs)
5
Applications
5 decided
100%
Approval rate
5 approved · 0 refused
0
EPC records
none recorded
4
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?
W1S 1NX has 4 known premises and 5 planning records — 5 approved of 5 decided (100%).
Premises
Name
Details
UPRN 10033543583
UPRN 10033550655
UPRN 100023470775
UPRN 100023470874
UPRN 10033543583
UPRN 10033550655
UPRN 100023470775
Show all 4 rows
UPRN 100023470874
Planning
What happened?
5 planning applications across the postcode; 5 approved of 5 decided (100%). Latest 5 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Display for a temporary period of six months of a non-illuminated 'to let'/ 'for sale' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
11 Mason's Arms Mews London W1S 1NX · premises record
Advert Application-Regulat. 7 Area (AD7)
Approved
2015-01-14
Retention of four new external air conditioning condensers on the flat roof of the building and the installation of an acoustic screen.
11 Mason's Arms Mews London W1S 1NX · premises record
Full Planning Permission Application
Approved
2011-02-15
Display of an non-illuminated estate agent board measuring 600mm x 900mm to be attached to the building at a height of between 3m and 4.6m from pavement level to the top of the board, for a temporary period of six months.
1-2 Mason's Arms Mews London W1S 1NX · premises record
—
Approved
2009-12-07
Display for a temporary period of six months of a non-illuminated 'to let'/ 'for sale' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
11 Mason's Arms Mews London W1S 1NX · premises record
Advert Application-Regulat. 7 Area (AD7)
Approved
2009-11-12
ESTATE AGENTS BOARD
11 Mason's Arms Mews London W1S 1NX · premises record
Advert Application-Regulat. 7 Area (AD7)
Approved
1999-04-29
Display for a temporary period of six months of a non-illuminated 'to let'/ 'for sale' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
11 Mason's Arms Mews London W1S 1NX · premises record
Approved
2015-01-14
More
Advert Application-Regulat. 7 Area (AD7)
Retention of four new external air conditioning condensers on the flat roof of the building and the installation of an acoustic screen.
11 Mason's Arms Mews London W1S 1NX · premises record
Approved
2011-02-15
More
Full Planning Permission Application
Display of an non-illuminated estate agent board measuring 600mm x 900mm to be attached to the building at a height of between 3m and 4.6m from pavement level to the top of the board, for a temporary period of six months.
1-2 Mason's Arms Mews London W1S 1NX · premises record
Approved
2009-12-07
More
—
Show all 5 rows
Display for a temporary period of six months of a non-illuminated 'to let'/ 'for sale' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
11 Mason's Arms Mews London W1S 1NX · premises record
Approved
2009-11-12
More
Advert Application-Regulat. 7 Area (AD7)
ESTATE AGENTS BOARD
11 Mason's Arms Mews London W1S 1NX · premises record
Approved
1999-04-29
More
Advert Application-Regulat. 7 Area (AD7)
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 4 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 4 of 4 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 4 of 4 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 4 of 4 premises. Some normally permitted changes may require planning permission.
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 4 of 4 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Mayfair · reference CONARA/1270 · covers 4 of 4 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 4 of 4 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 4 of 4 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 4 of 4 premises. Some normally permitted changes may require planning permission.
Show all 5 rows
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 4 of 4 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Mayfair · reference CONARA/1270 · covers 4 of 4 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 5 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
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Show all 8 rows
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Case officer on 3 applications
Case officer on 1 application
Development
What could it become?
Planning precedent5 applications and 4 mapped decisions in this postcode — precedent for what has been permitted and refused here.
EnergyNo EPC records joined yet.
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
The Developer PlanOwnership, 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.