Postcode record · Westminster
W1U 4PH.
W1U 4PH has 7 known premises and 5 planning records — 3 approved of 4 decided (75%). 1 EPC record.
Postcode W1U 4PH · boundary not held, centred on the postcodeApprovedRefusedOther15 exact2 approximate17 on the map — every match
At a glance · this postcodeWestminster profile →
7
Premises
known addresses (UPRNs)
5
Applications
4 decided
75%
Approval rate
3 approved · 1 refused
1
EPC records
ratings D 1
17
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?
W1U 4PH has 7 known premises and 5 planning records — 3 approved of 4 decided (75%). 1 EPC record.
Premises
Name
Details
UPRN 10033570354
UPRN 10033583998
UPRN 10033649051
UPRN 10033657146
UPRN 100023463967
UPRN 100023464227
UPRN 100023623138
UPRN 10033570354
UPRN 10033583998
UPRN 10033649051
Show all 7 rows
UPRN 10033657146
UPRN 100023463967
UPRN 100023464227
UPRN 100023623138
Planning
What happened?
5 planning applications across the postcode; 3 approved of 4 decided (75%). Latest 5 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Details of existing and as proposed windows pursuant to condition 3 of planning permission dated 20th November 2024 (RN 24/04584/FULL)
27 Marylebone High Street London W1U 4PH · premises record
Approval of Details (Full PP)
Approved
2025-03-31
Detailed comparison drawings as existing and as proposed windows pursuant to condition 3 of planning permission dated 20th November 2024 (RN 24/04584/FULL)
27 Marylebone High Street London W1U 4PH · premises record
Approval of Details (Full PP)
Refused
2025-02-20
Installation of replacement single glazed steel casement windows to upper floors with double glazed steel casement windows, to front elevations of Weymouth Street and Marylebone High Street.
27 Marylebone High Street London W1U 4PH · premises record
Full Planning Permission Application
Approved
2024-07-08
Display of two non-illuminated fascia signs measuring 35cm x 200cm; and a non-illuminated projecting sign measuring 45cm x 45cm.
27 Marylebone High Street London W1U 4PH · premises record
Advert Application (ADV)
Not required
2024-01-17
Erection of roof extension to form a two bedroom flat (Class C3) with roof terrace enclosed by railings; repositioning of existing air conditioning unit at ground floor and installation of new plant at roof level; alterations to the facade of the building to include new windows, window panels and railings and doors; and partial infill to rear at second and third floors to form new en-suite bathrooms to extend existing flats (Class C3).
27 Marylebone High Street London W1U 4PH · premises record
Applicant Mr Luke Mosson · Agent Howard de Walden Estate Management Limited · Officer Shaun Retzback
Full Planning Permission Application
Approved
2020-10-28
Details of existing and as proposed windows pursuant to condition 3 of planning permission dated 20th November 2024 (RN 24/04584/FULL)
27 Marylebone High Street London W1U 4PH · premises record
Approved
2025-03-31
More
Approval of Details (Full PP)
Detailed comparison drawings as existing and as proposed windows pursuant to condition 3 of planning permission dated 20th November 2024 (RN 24/04584/FULL)
27 Marylebone High Street London W1U 4PH · premises record
Refused
2025-02-20
More
Approval of Details (Full PP)
Installation of replacement single glazed steel casement windows to upper floors with double glazed steel casement windows, to front elevations of Weymouth Street and Marylebone High Street.
27 Marylebone High Street London W1U 4PH · premises record
Approved
2024-07-08
More
Full Planning Permission Application
Show all 5 rows
Display of two non-illuminated fascia signs measuring 35cm x 200cm; and a non-illuminated projecting sign measuring 45cm x 45cm.
27 Marylebone High Street London W1U 4PH · premises record
Not required
2024-01-17
More
Advert Application (ADV)
Erection of roof extension to form a two bedroom flat (Class C3) with roof terrace enclosed by railings; repositioning of existing air conditioning unit at ground floor and installation of new plant at roof level; alterations to the facade of the building to include new windows, window panels and railings and doors; and partial infill to rear at second and third floors to form new en-suite bathrooms to extend existing flats (Class C3).
27 Marylebone High Street London W1U 4PH · premises record
Applicant Mr Luke Mosson · Agent Howard de Walden Estate Management Limited · Officer Shaun Retzback
Approved
2020-10-28
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 7 premises each one covers.
Designation
Coverage
Archaeological Priority Area
City of Westminster APA 2.6: Marylebone Summary and Definition The Archaeological Priority Area covers the historic settlement of Marylebone which was focused on the area along Marylebone High Street and the former site of Marylebone Gardens, a 17th-1 · reference 77285 · covers 7 of 7 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 7 of 7 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 7 of 7 premises. Some normally permitted changes may require planning permission.
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 7 of 7 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Harley Street · reference 07/01600/CONARA · covers 7 of 7 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Archaeological Priority Area
City of Westminster APA 2.6: Marylebone Summary and Definition The Archaeological Priority Area covers the historic settlement of Marylebone which was focused on the area along Marylebone High Street and the former site of Marylebone Gardens, a 17th-1 · reference 77285 · covers 7 of 7 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 7 of 7 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 7 of 7 premises. Some normally permitted changes may require planning permission.
Show all 5 rows
Central Activities Zone
Named designation not supplied · reference CAZ00000005 · covers 7 of 7 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Harley Street · reference 07/01600/CONARA · covers 7 of 7 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 4 applications
Applicant on 1 application
Agent on 3 applications
Agent on 1 application
Agent on 1 application
Case officer on 3 applications
Case officer on 1 application
Case officer on 1 application
Applicant on 4 applications
Applicant on 1 application
Agent on 3 applications
Show all 8 rows
Agent on 1 application
Agent on 1 application
Case officer on 3 applications
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent5 applications and 17 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy1 EPC records; ratings D: 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
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.
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.