Postcode record · Westminster
SW1X 8DH.
SW1X 8DH has 4 known premises and 3 planning records — 2 approved of 3 decided (66.7%). 2 EPC records.
Postcode SW1X 8DH · boundary not held, centred on the postcodeApprovedRefusedOther3 on the map — every match
At a glance · this postcodeWestminster profile →
4
Premises
known addresses (UPRNs)
3
Applications
3 decided
66.7%
Approval rate
2 approved · 1 refused
56 days
Median decision time
average 135 days · 3 dated decisions
2
EPC records
ratings C 1 · E 1
3
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 8DH has 4 known premises and 3 planning records — 2 approved of 3 decided (66.7%). 2 EPC records.
Premises
Name
Details
UPRN 10033599734
UPRN 100022775621
UPRN 100022775622
UPRN 100023348149
UPRN 10033599734
UPRN 100022775621
UPRN 100022775622
Show all 4 rows
UPRN 100023348149
Planning
What happened?
3 planning applications across the postcode; 2 approved of 3 decided (66.7%). Latest 3 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Excavation to form basement extension, installation of pavement lights at ground floor level.
12 Lyall Street London SW1X 8DH · premises record
Officer Julia Kennedy
Full Planning Permission Application
Approved
2008-09-03
Removal of mansard roof and erection of new full second storey with roof terrace and glazed access hatch over. Alterations to fenestration including removal and installation of new windows to front (Lyall Street) and side (Lyall Mews) elevations.
12 Lyall Street London SW1X 8DH · premises record
Officer Julia Kennedy
Full Planning Permission Application
Refused
2008-09-03
Re-instatement of front basement lightwell, installation of balconette at second floor level to Lyall Mews elevation, erection of single-storey rear extension at second floor level to Eaton Place elevation, erection of glazed pergola at second floor level behind existing walls to provide winter garden.
11 Lyall Street London SW1X 8DH · premises record
Officer Jonathan Severs
Full Planning Permission Application
Approved
2003-07-29
Excavation to form basement extension, installation of pavement lights at ground floor level.
12 Lyall Street London SW1X 8DH · premises record
Officer Julia Kennedy
Approved
2008-09-03
More
Full Planning Permission Application
Removal of mansard roof and erection of new full second storey with roof terrace and glazed access hatch over. Alterations to fenestration including removal and installation of new windows to front (Lyall Street) and side (Lyall Mews) elevations.
12 Lyall Street London SW1X 8DH · premises record
Officer Julia Kennedy
Refused
2008-09-03
More
Full Planning Permission Application
Re-instatement of front basement lightwell, installation of balconette at second floor level to Lyall Mews elevation, erection of single-storey rear extension at second floor level to Eaton Place elevation, erection of glazed pergola at second floor level behind existing walls to provide winter garden.
11 Lyall Street London SW1X 8DH · premises record
Officer Jonathan Severs
Approved
2003-07-29
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 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 3 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Case officer on 2 applications
Case officer on 1 application
Case officer on 2 applications
Case officer on 1 application
Development
What could it become?
Planning precedent3 applications and 3 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy2 EPC records; ratings C: 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.
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.