Postcode record · Westminster
SW1X 8DJ.
SW1X 8DJ has 35 known premises and 111 planning records — 67 approved of 84 decided (79.8%). 13 EPC records.
Postcode SW1X 8DJ · boundary not held, centred on the postcodeApprovedRefusedOther111 on the map — every match
At a glance · this postcodeWestminster profile →
35
Premises
known addresses (UPRNs)
111
Applications
84 decided
79.8%
Approval rate
67 approved · 17 refused
62 days
Median decision time
average 74 days · 101 dated decisions
13
EPC records
ratings C 2 · D 8 · E 3
111
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 8DJ has 35 known premises and 111 planning records — 67 approved of 84 decided (79.8%). 13 EPC records.
Premises (18 of 35 shown)
Name
Details
UPRN 10033549864
UPRN 10033555836
UPRN 10033599096
UPRN 10033599736
UPRN 10033599737
UPRN 10033599738
UPRN 100022775560
UPRN 100022775561
UPRN 100022775562
UPRN 100022775563
UPRN 10033549864
UPRN 10033555836
UPRN 10033599096
Show all 10 rows
UPRN 10033599736
UPRN 10033599737
UPRN 10033599738
UPRN 100022775560
UPRN 100022775561
UPRN 100022775562
UPRN 100022775563
Planning
What happened?
111 planning applications across the postcode; 67 approved of 84 decided (79.8%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
External alterations including: lowering of window openings at first floor on the front elevation and introduction of Juliet balconies, replacement of garage door, new rooflight, upgrades to the fenestration to front and rear and rebuilding of front entrance steps.
2A Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Full Planning Permission Application
Approved
2026-03-05
2 x Birch (T1 and T2): reduce back from tips by 2m and crown clean. 1 x Pear (T3) and 1 x Birch (T4): fell
33 Lyall Mews London SW1X 8DJ · premises record
Officer Jamie Newman
Applic. for works to trees in CA
No objection
2023-10-31
Amendments to planning permission dated 3 August 2018 (RN: 18/05128) for 'Excavation to form an enlarged single storey basement level underneath the footprint of the single-family dwelling house, external alterations to the facade and at roof level including mechanical plant and refurbishment throughout'. Namely, to allow amendments including reduction in size of the rooflight, provision of alternative mechanical plant at roof level, retention of existing brick vents to front and rear elevations, and alarm panel to front elevation.
61 Lyall Mews London SW1X 8DJ · premises record
Officer Joshua Howitt
Non-material amendments
Approved
2020-02-11
Reinstatement of garage, replacement of garage door, front door and ground floor sash window and installation of conservation double glazing throughout.
63 Lyall Mews London SW1X 8DJ · premises record
Officer Jonathon Metcalfe
Full Planning Permission Application
Approved
2019-12-23
Details of completed Appendix A, pursuant to Condition 3 of planning permission dated 3 August 2018 (RN: 18/05128/FULL).
61 Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Approval of Details (Full PP)
Approved
2018-11-22
Detailed drawings of new external doors, windows and rooflights pursuant to condition 5 of planning permission dated 3 August 2018 (RN:18/05128/FULL).
61 Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Approval of Details (Full PP)
Approved
2018-11-08
T1 & T2 Birch: Crown reduce back to previous, most recent reduction points retaining shortened, furnishing growth T3 Pear: Reduce crown by 20% to contain. Remove deadwood. T5 Birch (closest to the kitchen) Crown reduce by up to 25% retaining furnishing growth.
33 Lyall Mews London SW1X 8DJ · premises record
Officer Tom Howgego
Applic. for works to trees in CA
No objection
2018-11-01
Excavation to form an enlarged single storey basement level underneath the footprint of the single-family dwelling house, external alterations to the facade and at roof level including mechanical plant and refurbishment throughout.
61 Lyall Mews London SW1X 8DJ · premises record
Officer Joshua Howitt
Full Planning Permission Application
Approved
2018-06-18
Detailed drawings showing the glass handrail to the rear lightwell replaced with a simple black metal handrail pursuant to condition 5 of planning permission dated 25 April 2018 (RN18/01467/FULL).
34 Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Approval of Details (Full PP)
Approved
2018-05-30
Windows on front and rear upper ground floor to be replaced with new slimlite double glazed timber sash windows.
32 Lyall Mews London SW1X 8DJ · premises record
Officer Seana McCaffrey
Certificate of Lawfulness (proposed)
Approved
2018-04-09
External alterations including: lowering of window openings at first floor on the front elevation and introduction of Juliet balconies, replacement of garage door, new rooflight, upgrades to the fenestration to front and rear and rebuilding of front entrance steps.
2A Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Approved
2026-03-05
More
Full Planning Permission Application
2 x Birch (T1 and T2): reduce back from tips by 2m and crown clean. 1 x Pear (T3) and 1 x Birch (T4): fell
33 Lyall Mews London SW1X 8DJ · premises record
Officer Jamie Newman
No objection
2023-10-31
More
Applic. for works to trees in CA
Amendments to planning permission dated 3 August 2018 (RN: 18/05128) for 'Excavation to form an enlarged single storey basement level underneath the footprint of the single-family dwelling house, external alterations to the facade and at roof level including mechanical plant and refurbishment throughout'. Namely, to allow amendments including reduction in size of the rooflight, provision of alternative mechanical plant at roof level, retention of existing brick vents to front and rear elevations, and alarm panel to front elevation.
61 Lyall Mews London SW1X 8DJ · premises record
Officer Joshua Howitt
Approved
2020-02-11
More
Non-material amendments
Show all 10 rows
Reinstatement of garage, replacement of garage door, front door and ground floor sash window and installation of conservation double glazing throughout.
63 Lyall Mews London SW1X 8DJ · premises record
Officer Jonathon Metcalfe
Approved
2019-12-23
More
Full Planning Permission Application
Details of completed Appendix A, pursuant to Condition 3 of planning permission dated 3 August 2018 (RN: 18/05128/FULL).
61 Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Approved
2018-11-22
More
Approval of Details (Full PP)
Detailed drawings of new external doors, windows and rooflights pursuant to condition 5 of planning permission dated 3 August 2018 (RN:18/05128/FULL).
61 Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Approved
2018-11-08
More
Approval of Details (Full PP)
T1 & T2 Birch: Crown reduce back to previous, most recent reduction points retaining shortened, furnishing growth T3 Pear: Reduce crown by 20% to contain. Remove deadwood. T5 Birch (closest to the kitchen) Crown reduce by up to 25% retaining furnishing growth.
33 Lyall Mews London SW1X 8DJ · premises record
Officer Tom Howgego
No objection
2018-11-01
More
Applic. for works to trees in CA
Excavation to form an enlarged single storey basement level underneath the footprint of the single-family dwelling house, external alterations to the facade and at roof level including mechanical plant and refurbishment throughout.
61 Lyall Mews London SW1X 8DJ · premises record
Officer Joshua Howitt
Approved
2018-06-18
More
Full Planning Permission Application
Detailed drawings showing the glass handrail to the rear lightwell replaced with a simple black metal handrail pursuant to condition 5 of planning permission dated 25 April 2018 (RN18/01467/FULL).
34 Lyall Mews London SW1X 8DJ · premises record
Officer Nikki Mitchell
Approved
2018-05-30
More
Approval of Details (Full PP)
Windows on front and rear upper ground floor to be replaced with new slimlite double glazed timber sash windows.
32 Lyall Mews London SW1X 8DJ · premises record
Officer Seana McCaffrey
Approved
2018-04-09
More
Certificate of Lawfulness (proposed)
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 35 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Basement Development Permitted Rights Removed · reference 23/00006/REG_4 · covers 35 of 35 premises. Some normally permitted changes may require planning permission.
Conservation Area
Belgravia · reference CONARA/1350 · covers 35 of 35 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 35 of 35 premises. Some normally permitted changes may require planning permission.
Conservation Area
Belgravia · reference CONARA/1350 · covers 35 of 35 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
Case officer on 8 applications
Case officer on 6 applications
Case officer on 3 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 8 applications
Case officer on 6 applications
Case officer on 3 applications
Show all 10 rows
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent111 applications and 111 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy13 EPC records; ratings C: 2, D: 8, E: 3.
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.
5 intent signals recorded in this postcode
Portfolio seller · Long hold
Subscribe to see the signals →Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.