Postcode record · Westminster
SW1X 7AH.
SW1X 7AH has 4 known premises and 8 planning records — 4 approved of 4 decided (100%). 2 EPC records.
Postcode SW1X 7AH · boundary not held, centred on the postcodeApprovedRefusedOther8 exact8 on the map — every match
At a glance · this postcodeWestminster profile →
4
Premises
known addresses (UPRNs)
8
Applications
4 decided
100%
Approval rate
4 approved · 0 refused
2
EPC records
ratings D 1 · E 1
8
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?
SW1X 7AH has 4 known premises and 8 planning records — 4 approved of 4 decided (100%). 2 EPC records.
Premises
Name
Details
UPRN 100022734616
UPRN 100022734617
UPRN 100023347785
UPRN 100023347869
UPRN 100022734616
UPRN 100022734617
UPRN 100023347785
Show all 4 rows
UPRN 100023347869
Planning
What happened?
8 planning applications across the postcode; 4 approved of 4 decided (100%). Latest 8 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Excavation of an additional basement level, in connection with the upgrade and enlargement of commerical space (Use Class E).
9 Chester Mews London SW1X 7AH · premises record
Officer Charles Cooksley
Full Planning Permission Application
Pending
2026-05-20
Replacement of a sash window with double glazed french doors with projecting balcony at rear first floor level and installation of two velux rooflights to the rear roof slope.
5 Chester Mews London SW1X 7AH · premises record
Full Planning Permission Application
Approved
2016-08-09
Excavation of basement; erection of rear single storey lift shaft at first floor level; alterations to and installation of windows and doors. Use of part new basement and part ground floors as an office (Class B1) and the use of part, basement, ground and first floors as a residential unit (Class C3). [Application includes 7 Chester Mews].
9 Chester Mews London SW1X 7AH · premises record
Full Planning Permission Application
Approved
2014-03-14
Installation of vehicle access gate for entrance to access road between 3 Chester Mews and 7-9 Chester Mews(Site includes 3-9 Chester Mews).
3 Chester Mews London SW1X 7AH · premises record
Conservation Area Consent Appl (CAC)
Withdrawn
2012-12-03
Installation of vehicle access gate for entrance to access road between 3 Chester Mews and 7-9 Chester Mews (site includes 3-9 Chester Mews).
3 Chester Mews London SW1X 7AH · premises record
Full Planning Permission Application
Withdrawn
2012-12-03
Use of first floor as a residential flat (Class C3). External alterations to windows and doors.
9 Chester Mews London SW1X 7AH · premises record
Officer Rupert Handley
Full Planning Permission Application
Approved
2010-03-17
Installation of two rooflights in rear roof slope.
7 Chester Mews London SW1X 7AH · premises record
Full Planning Permission Application
Approved
2002-01-31
Alterations to front and rear facades including new windows, doors and rendering, replacement of rear first floor trellis. All in association with the use of part ground floors as an office (Class B1) and the use of part ground and first floors as a residential unit (Class C3). [Application includes 5-9 Chester Mews].
9 Chester Mews London SW1X 7AH · premises record
Full
Unknown
—
Excavation of an additional basement level, in connection with the upgrade and enlargement of commerical space (Use Class E).
9 Chester Mews London SW1X 7AH · premises record
Officer Charles Cooksley
Pending
2026-05-20
More
Full Planning Permission Application
Replacement of a sash window with double glazed french doors with projecting balcony at rear first floor level and installation of two velux rooflights to the rear roof slope.
5 Chester Mews London SW1X 7AH · premises record
Approved
2016-08-09
More
Full Planning Permission Application
Excavation of basement; erection of rear single storey lift shaft at first floor level; alterations to and installation of windows and doors. Use of part new basement and part ground floors as an office (Class B1) and the use of part, basement, ground and first floors as a residential unit (Class C3). [Application includes 7 Chester Mews].
9 Chester Mews London SW1X 7AH · premises record
Approved
2014-03-14
More
Full Planning Permission Application
Show all 8 rows
Installation of vehicle access gate for entrance to access road between 3 Chester Mews and 7-9 Chester Mews(Site includes 3-9 Chester Mews).
3 Chester Mews London SW1X 7AH · premises record
Withdrawn
2012-12-03
More
Conservation Area Consent Appl (CAC)
Installation of vehicle access gate for entrance to access road between 3 Chester Mews and 7-9 Chester Mews (site includes 3-9 Chester Mews).
3 Chester Mews London SW1X 7AH · premises record
Withdrawn
2012-12-03
More
Full Planning Permission Application
Use of first floor as a residential flat (Class C3). External alterations to windows and doors.
9 Chester Mews London SW1X 7AH · premises record
Officer Rupert Handley
Approved
2010-03-17
More
Full Planning Permission Application
Installation of two rooflights in rear roof slope.
7 Chester Mews London SW1X 7AH · premises record
Approved
2002-01-31
More
Full Planning Permission Application
Alterations to front and rear facades including new windows, doors and rendering, replacement of rear first floor trellis. All in association with the use of part ground floors as an office (Class B1) and the use of part ground and first floors as a residential unit (Class C3). [Application includes 5-9 Chester Mews].
9 Chester Mews London SW1X 7AH · premises record
Unknown
—
More
Full
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
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.
Conservation Area
Belgravia · reference CONARA/1350 · covers 4 of 4 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 4 of 4 premises. Some normally permitted changes may require planning permission.
Conservation Area
Belgravia · reference CONARA/1350 · 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 8 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 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent8 applications and 8 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy2 EPC records; ratings D: 1, E: 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.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.