Postcode record · Westminster
SW1Y 6BU.
SW1Y 6BU has 57 known premises and 52 planning records — 35 approved of 42 decided (83.3%). 5 EPC records.
Postcode SW1Y 6BU · boundary not held, centred on the postcodeApprovedRefusedOther52 exact52 on the map — every match
At a glance · this postcodeWestminster profile →
57
Premises
known addresses (UPRNs)
52
Applications
42 decided
83.3%
Approval rate
35 approved · 7 refused
5
EPC records
ratings C 3 · D 2
52
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?
SW1Y 6BU has 57 known premises and 52 planning records — 35 approved of 42 decided (83.3%). 5 EPC records.
Premises (18 of 57 shown)
Name
Details
UPRN 10033538222
UPRN 10033538223
UPRN 10033538224
UPRN 10033538225
UPRN 10033538226
UPRN 10033538227
UPRN 10033538228
UPRN 10033538229
UPRN 10033550744
UPRN 10033569753
UPRN 10033538222
UPRN 10033538223
UPRN 10033538224
Show all 10 rows
UPRN 10033538225
UPRN 10033538226
UPRN 10033538227
UPRN 10033538228
UPRN 10033538229
UPRN 10033550744
UPRN 10033569753
Planning
What happened?
52 planning applications across the postcode; 35 approved of 42 decided (83.3%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Installation of four condenser units at roof level.
13 Mason's Yard London SW1Y 6BU · premises record
Full Planning Permission Application
Pending
2026-02-11
Display of non-illuminated letters sign measuring 0.20m x 1.88m.
4 Mason's Yard London SW1Y 6BU · premises record
Advert Application (ADV)
Not required
2020-08-19
Amendments to planning permission dated 7 August 2018 (RN 18/04781/FULL) for the erection of roof extension and two storey rear closet wing extension and associated alterations including formation of a roof terrace and the installation of three air conditioning units on roof of rear closet wing in connection with enlargement of existing offices. NAMELY, the installation new windows to the rear (east) elevation of the building.
9 Mason's Yard London City Of Westminster SW1Y 6BU · premises record
Non-material amendments
Withdrawn
2018-11-30
Installation of a new glass roof hatch, glass balustrading and altered parapet to create a roof terrace, and associated alterations; installation of additional rear windows at third floor.
9 Mason's Yard London SW1Y 6BU · premises record
Full Planning Permission Application
Approved
2018-11-23
Details of new windows, ground floor alterations, the roof extension, the plant enclosure, balustrade detail and detail of the green roof pursuant to condition 5 of planning permission dated 7 August 2018 (RN: 18/04781/FULL).
9 Mason's Yard London SW1Y 6BU · premises record
Approval of Details (Full PP)
Approved
2018-11-16
Erection of roof extension and two storey rear closet wing extension and associated alterations including formation of a roof terrace and the installation of three air conditioning units on roof of rear closet wing in connection with enlargement of existing offices.
9 Mason's Yard London SW1Y 6BU · premises record
Full Planning Permission Application
Approved
2018-06-07
Erection of roof extension and two storey rear closet wing extension and associated alterations including installation of three air conditioning units on roof of rear closet wing in connection with enlargement of existing offices.
9 Mason's Yard London SW1Y 6BU · premises record
Full Planning Permission Application
Refused
2018-02-24
Installation of air conditioning unit on the balcony at third floor level.
Flat 3 19 Mason's Yard London SW1Y 6BU · premises record
Full Planning Permission Application
Approved
2014-10-28
Erection of dormer roof extension and installation of sliding folding doors and glazed balustrade at third floor level (in connection with enlargement of Flat 3).
Flat 3 19 Mason's Yard London SW1Y 6BU · premises record
Full
Approved
2014-07-16
Retention of two air conditioning units with associated timber housing on the front elevation to serve 13A Mason's Yard.
13 Mason's Yard London SW1Y 6BU · premises record
Applicant Not disclosed · Officer Jonathan Friel
Full Planning Permission Application
Refused
2014-06-25
Installation of four condenser units at roof level.
13 Mason's Yard London SW1Y 6BU · premises record
Pending
2026-02-11
More
Full Planning Permission Application
Display of non-illuminated letters sign measuring 0.20m x 1.88m.
4 Mason's Yard London SW1Y 6BU · premises record
Not required
2020-08-19
More
Advert Application (ADV)
Amendments to planning permission dated 7 August 2018 (RN 18/04781/FULL) for the erection of roof extension and two storey rear closet wing extension and associated alterations including formation of a roof terrace and the installation of three air conditioning units on roof of rear closet wing in connection with enlargement of existing offices. NAMELY, the installation new windows to the rear (east) elevation of the building.
9 Mason's Yard London City Of Westminster SW1Y 6BU · premises record
Withdrawn
2018-11-30
More
Non-material amendments
Show all 10 rows
Installation of a new glass roof hatch, glass balustrading and altered parapet to create a roof terrace, and associated alterations; installation of additional rear windows at third floor.
9 Mason's Yard London SW1Y 6BU · premises record
Approved
2018-11-23
More
Full Planning Permission Application
Details of new windows, ground floor alterations, the roof extension, the plant enclosure, balustrade detail and detail of the green roof pursuant to condition 5 of planning permission dated 7 August 2018 (RN: 18/04781/FULL).
9 Mason's Yard London SW1Y 6BU · premises record
Approved
2018-11-16
More
Approval of Details (Full PP)
Erection of roof extension and two storey rear closet wing extension and associated alterations including formation of a roof terrace and the installation of three air conditioning units on roof of rear closet wing in connection with enlargement of existing offices.
9 Mason's Yard London SW1Y 6BU · premises record
Approved
2018-06-07
More
Full Planning Permission Application
Erection of roof extension and two storey rear closet wing extension and associated alterations including installation of three air conditioning units on roof of rear closet wing in connection with enlargement of existing offices.
9 Mason's Yard London SW1Y 6BU · premises record
Refused
2018-02-24
More
Full Planning Permission Application
Installation of air conditioning unit on the balcony at third floor level.
Flat 3 19 Mason's Yard London SW1Y 6BU · premises record
Approved
2014-10-28
More
Full Planning Permission Application
Erection of dormer roof extension and installation of sliding folding doors and glazed balustrade at third floor level (in connection with enlargement of Flat 3).
Flat 3 19 Mason's Yard London SW1Y 6BU · premises record
Approved
2014-07-16
More
Full
Retention of two air conditioning units with associated timber housing on the front elevation to serve 13A Mason's Yard.
13 Mason's Yard London SW1Y 6BU · premises record
Applicant Not disclosed · Officer Jonathan Friel
Refused
2014-06-25
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 57 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 57 of 57 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 57 of 57 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 57 of 57 premises. Some normally permitted changes may require planning permission.
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 57 of 57 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
St James's · reference CONARA/1330 · covers 57 of 57 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 57 of 57 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 57 of 57 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 57 of 57 premises. Some normally permitted changes may require planning permission.
Show all 5 rows
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 57 of 57 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
St James's · reference CONARA/1330 · covers 57 of 57 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 30 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 2 applications
Applicant on 2 applications
Applicant on 2 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 2 applications
Applicant on 2 applications
Applicant on 2 applications
Show all 10 rows
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
Development
What could it become?
Planning precedent52 applications and 52 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy5 EPC records; ratings C: 3, D: 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
Ageing director · Price decline
Subscribe to see the signals →Thinking about a project here?
How long would a planning application take here? →
Westminster's real decision times and approval rates, measured from the record — not the statutory target.
Why do applications around here get refused? →
The most common refusal grounds in Westminster, by year and scheme type — the risks to know before applying.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.