Flat 31 Bickenhall Mansions Bickenhall Street London W1U 6BR Data via plota.co.uk

26/06214/FULL - Full Planning Permission Application Pending

Proposal

Replacement of two fixed high-level windows above the rear balcony door and fixed side screen with two recessed white powder-coated aluminium weather louvres serving internally located air-conditioning plant, and associated works. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
10 Sept 2026
✓
Validated
22 Sept 2026
Decision
Expected by 17 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 12 Nov 2026 and 21 Nov 2026, from Westminster's recent extensions.

Documents 25

All documents on the council site ↗

Site constraints 9

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 ↗
2 Article 4 directions
Article 4 Basement Development Permitted Rights Removed · Article 4 Direction Class E To C3 In Central Activities Zone. Named permitted development rights are withdrawn here.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 ↗
Town centre: Marylebone Road
A designated centre in the London Plan.
Shops, services and active frontages are protected in centres, and main town centre uses are steered here first.
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.
20 listed buildings within 150 m
Nearest: 105-115, Baker Street W1, Grade II, 48 m away · 20 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 20 with distances
Historic England ↗
Also on the record
National infrastructure project 600 m away: London Strategic Heat Main Project, at pre-application; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 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.

Sales history 1

Last sold for £1,285,000 in August 2010. Flat or maisonette, leasehold.

27 August 2010£1,285,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area146 m² (1,572 sq ft)
Energy ratingD (61 out of 100)
PropertyMid-terrace flat, 5 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in March 2010, the latest held for this property. The building may have changed since. View the certificate

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Important details

Application type
Full Planning Permission Application
Postcode
W1U 6BR
Received
10 Sept 2026
Validated
22 Sept 2026
Ward
Marylebone
Case officer
Show
Target decision
17 Nov 2026
Applicant
Show
Agent
James Arthur Consultancy

Decision outlook

Day 17 of the 56-day target. Westminster usually decides extensions by day 55.

Day 1739 days to the 56-day target
56%decided within 8 weeks
88%approved
1,675decided in the last year

Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →

Public comments

No public comments yet.

Last counted 7 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15217849
Planning Portal ref
PP-15217849
Env. assessment
No
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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.