82A Chiltern Street London W1U 5AQ Data via plota.co.uk

26/07290/CLEUD - Certificate of Lawfulness (existing) Pending
Admin / procedural

Proposal

Confirmation that digging of trench to contain part of foundations is lawful and that planning permission dated 30 October 2023 commenced before expiry of the three year time period. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
23 Oct 2026
Decision
Expected by 18 Dec 2026

Under consideration

No decision has been issued yet. A decision is expected by 18 Dec 2026.

Documents 10

Decision & officer reports 1

PDF 23-03464-FULL_DECISION NOTICE Other · 23 Oct 2026 View ↗

Plans & drawings 5

PDF LOCATION PLAN Location Plan · 23 Oct 2026 View ↗ PDF PROPOSED SUB STRUCTURE Drawing · 23 Oct 2026 View ↗ PDF ADDITIONAL PLANS_INCLUDED_IN_DETAIL DRAWING Superseded document · 23 Oct 2026 View ↗ PDF FOUNDATION STRATEGY SECTION Drawing · 23 Oct 2026 View ↗ PDF PROPOSED GROUND FLOOR PLAN Drawing · 23 Oct 2026 View ↗

Application forms 1

PDF APPLICATION FORM REDACTED Application Form · 23 Oct 2026 View ↗

Other documents 3

PDF RECEIPT OF APPLICATION Other · 29 Oct 2026 View ↗ PDF PHOTOGRAPHIC SCHEDULE Photo · 23 Oct 2026 View ↗ PDF COVER LETTER Background Papers · 23 Oct 2026 View ↗

All documents on the council site ↗

Associated applications 3

Site constraints 10

Portman Estate conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Article 4 direction
Article 4 Basement Development Permitted Rights Removed. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Westminster AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
6 listed buildings within 150 m
Nearest: 78, Chiltern Street, Grade II, 14 m away · 6 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 6 with distances
Historic England ↗
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
Also on the record
National infrastructure project 538 m away: London Strategic Heat Main Project, at pre-application; Registered park or garden 246 m away: Regent's Park; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square; Town centre 27 m away: Baker Street (part).
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 1 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Important details

Council
Westminster
Application type
Certificate of Lawfulness (existing)
Postcode
W1U 5AQ
Received
23 Oct 2026
Validated
23 Oct 2026
Ward
Marylebone
Case officer
Show
Target decision
18 Dec 2026
Applicant
Show
Agent
Scott Whitby Studio

Public comments

No public comments yet.

Last counted 30 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15321410
Planning Portal ref
PP-15321410
Env. assessment
No

Historical activity at this location

26 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2023 Approved
Installation of a retractable glazed roof over the existing external courtyard, and assoc…
23/03464/FULL
Within ~100m

Nearby activity

2025 Refused
Flat 1D Block 1 Portman Mansions Chiltern Street London W1U 5AJ
Replacement of existing single-glazed timber sash and casement windows with double-glazed…
25/05866/FULL
2025 Withdrawn
Flat 4a Block 4 Portman Mansions Chiltern Street London W1U 6NS
2 x Shrub/Trees ? Reduce in height and lateral spread by 1-2 metres ? back to previous.
25/06866/TCA
2025
Basement And Ground Floor 30 Paddington Street London W1U 4HB
Replacement and repositioning of existing air conditioning unit including installation of…
25/03452/FULL
2025
York Mansions Chiltern Street London W1U 5AL
Replacement of six flat entrance doors & two store/intake doors with compliant fire doors.
25/03358/COFUL
2025
Ground Floor 118 Baker Street London W1U 6TT
Shopfront alteration with second entrance and new internal partition to form second shop…
25/02587/FULL
2025
Ground Floor 118 Baker Street London W1U 6TT
shopfront alteration with second entrance and new internal partition to form second shop…
25/02588/LBC
2025
Romney Mews London
Variation of Condition 1 of planning permission dated 27th March 2023 (RN: 23/00659/FULL)…
25/00135/FULL
2024
Romney Mews London
Variation of condition 1 of planning permission dated 27th March 2023 (RN:23/00659/FULL)…
24/08906/FULL
2024
1 Sherlock Mews London W1U 6DW
Removal of the front mansard roof slope, raised front parapet, installation of pv panels…
24/08305/FULL
2024 Approved
122 Baker Street London W1U 6TX
Display of internally illuminated sign measuring 0.9m x 1.03m
24/04711/ADV
2024
First Floor 118 Baker Street London W1U 6TT
Display for a temporary period of five months of a non-illuminated estate agent board loc…
24/05209/AD7
2024
Flat 3A Block 3 Portman Mansions Chiltern Street London W1U 5AN
Proposed replacement of the existing single-glazed casement and sash windows with slimlin…
24/05076/FULL
2024 Approved
York Mansions Chiltern Street London W1U 5AL
Installation of fibre optic cabling into the building, inline with the route approval.
24/02861/CLOPUD
2024 Approved
100 Baker Street London W1U 6TL
Painting of the shopfront; installation of externally illuminated fascia and hanging sign…
24/03074/LBC
2024
Speen House Porter Street London W1U 6WH
Installation of variable refrigerant cooling heating and air conditioning system located…
24/04107/LBC
2024 Approved
100 Baker Street London W1U 6TL
Display of an externally illuminated fascia sign measuring 20.5cm x 247cm; an externally…
24/03458/ADV
2024
1 Sherlock Mews London W1U 6DW
Erection of mansard roof extension, replacement of windows and doors, and internal reconf…
24/03975/FULL
2024 Approved
Flat 5E Block 5 Portman Mansions Chiltern Street London W1U 5AH
Installation of replacement single glazed timber frame windows and doors with new double…
24/02042/FULL
2024
100 Baker Street London W1U 6TL
Display of externally illuminated fascia and hanging sings measuring 2.47m x 0.21m & 0.60…
24/03065/ADV
2024 Approved
Sherlock Holmes Hotel 108-114 Baker Street London W1U 8ED
Use of an area of the public highway measuring 14.0m x 2.5m for the placing of 10 tables…
24/00155/TCH
2017 Refused
14 Sherlock Mews London W1U 6DT
Variation of Condition 1 of listed building consent dated 23 June 2015 (RN: 14/10745/LBC)…
17/09604/LBC
2017 Approved
81 Luxborough Towers Luxborough Street London W1U 5BN
Installation of replacement windows at 15 floor level on south elevation.
17/10927/FULL
2018 Refused
96-98 Baker Street London W1U 6TJ
Display for a temporary period of six months of a non-illuminated estate agent board loca…
18/00543/AD7
2016 Approved
120 Baker Street London W1U 6TU
Installation of plant, erection of an acoustic screen over the rear basement lightwell
16/09986/FULL
2016 Approved
120 Baker Street London W1U 6TU
Installation of plant, erection of an acoustic screen over the rear basement lightwell
16/09987/LBC
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions

Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use