Flat 15 Maybury Court Marylebone Street London W1G 8JF Data via plota.co.uk

25/04436/FULL - Full Planning Permission Application Approved

Proposal

Replacement of single-glazed timber casement windows with like-for-like timber casement windows incorporating vacuum glazing, finished in white paint. Data via plota.co.uk

Track application Save this application and get an email when its status or decision changes. Alerts nearby Get email alerts for new planning applications near this address.
View original council record ↗Last checked

Application progress

✓
Received
27 Jun 2025
✓
Validated
22 Jul 2025
✓
Consultation
29 Jul 2025
✓
Approved
10 Sept 2025

Approved on 10 Sept 2025 · Delegated Decision · Last checked 19 Oct 2026

Documents 21

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 10 Sept 2025 View ↗ PDF DELEGATED REPORT Report · 10 Sept 2025 View ↗

Statements & assessments 4

PDF FIRE GATEWAY ONE STATEMENT Background Papers · 9 Jul 2025 View ↗ PDF T2040 - SUSTAINABLE DESIGN AND CONSTRUCTION STATEMENT V1.0 Sustainability appraisal · 27 Jun 2025 View ↗ PDF T2040 - SIGNED FIRE STATEMENT Background Papers · 27 Jun 2025 View ↗ PDF T2040 - DESIGN ACCESS AND HERITAGE STATEMENT V1.0 Design and Access Statement · 27 Jun 2025 View ↗

Plans & drawings 5

PDF PROPOSED ELEVATIONS V1.0 Drawing · 22 Jul 2025 View ↗ PDF EXISTING ELEVATIONS V1.0 Drawing · 22 Jul 2025 View ↗ PDF LOCATION PLAN Location Plan · 27 Jun 2025 View ↗ PDF T2040 - DETAILED SPECIFICATION OF PROPOSED JOINERY V1.0 Drawing · 27 Jun 2025 View ↗ PDF T2040 - DETAILED SECTION DRAWINGS V1.0 Drawing · 27 Jun 2025 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 27 Jun 2025 View ↗

Consultation & comments 4

PDF HEALTH AND SAFETY COMMENT Other · 6 Aug 2025 View ↗ PDF ECNSLT-STD EXT CONSULTEES Background Papers · 29 Jul 2025 View ↗ PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 29 Jul 2025 View ↗ PDF INVALID CHASER LETTER (14 DAY RESPONSE) Background Papers · 16 Jul 2025 View ↗

Other documents 5

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 29 Jul 2025 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 29 Jul 2025 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 29 Jul 2025 View ↗ PDF RECEIPT OF APPLICATION Other · 2 Jul 2025 View ↗ PDF 1ST INVALID LETTER Background Papers · 2 Jul 2025 View ↗

All documents on the council site ↗

Site constraints 10

Harley Street 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.
Archaeological priority area: City of Westminster APA 2.6
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
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 ↗
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.
18 listed buildings within 150 m
Nearest: Crofton House, Grade II, 51 m away · 1 Grade II*, 17 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 18 with distances
Historic England ↗
Also on the record
National infrastructure project 311 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; Town centre 16 m away: Marylebone High Street.
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.

Sales history 1

Last sold for £800,000 in October 2024. Flat or maisonette, leasehold.

22 October 2024£800,000

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

Work with planning data?

Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.

About Plota's data service

Other new applications on this street

6 Aug 2026Approved

Flat 11 Maybury Court Marylebone Street London W1G 8JE

Replacement of existing single-glazed timber-framed windows at Fourth Floor, Fla...

26/05147/FULL

Nearby new applications

2 Nov 2026Pending

57 Harley Street London W1G 8QS

Details of facing materials, biodiverse green roof details and management, and L...

26/07425/ADFULL
29 Oct 2026Pending

Flat 6 15 Fitzhardinge Street London W1H 6EQ

Replacement of existing timber sash windows with slim double glazed timber sash ...

26/06622/FULL
29 Oct 2026Pending

Flat 6 15 Fitzhardinge Street London W1H 6EQ

Replacement of existing timber sash windows with slim double glazed timber sash ...

26/06623/LBC
29 Oct 2026Pending

40 Wigmore Street London W1U 2RX

Display of a non-illuminated fascia sign measuring 0.29m x 0.79m. (Linked with 2...

26/06970/ADV
29 Oct 2026Pending

40 Wigmore Street London W1U 2RX

Installation of a non-illuminated fascia sign measuring 0.29m x 0.79m and two vi...

26/07390/LBC
29 Oct 2026Pending

Abercorn School 38 Portland Place London W1B 1LS

Details of cycle storage pursuant to condition 13 of planning permission dated 9...

26/07321/ADFULL

Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
W1G 8JF
Received
27 Jun 2025
Validated
22 Jul 2025
Ward
Marylebone
Case officer
Show
Target decision
16 Sept 2025
Decision
Application Permitted
Decision date
10 Sept 2025
Decision level
Delegated Decision
Applicant
Show
Agent
Sashed LTD

How this decision compares

Decided in 50 days from validation, 26 days faster than Westminster's median of 76 for full applications. Approved, as 86% of full applications here are.

35%decided within 8 weeks
86%approved
2,198decided in the last year

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

Public comments

No public comments yet.

67 neighbours consulted · Last counted 19 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14134558
Planning Portal ref
PP-14134558
Comments by
27 Aug 2025
Site or press notice
29 Jul 2025
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025
96 - 97 Marylebone High Street London W1U 4RH
Display of one non illuminated fascia sign measuring 0.22m x 1.076 and one non illuminate…
25/08388/ADV
2025 Refused
Basement And Ground Floor 10 Marylebone High Street London W1U 4BT
Display of non-illuminated fascia sign measuring 0.60m x 0.15m and internally illuminated…
25/06190/ADV
2025
8 Marylebone High Street London W1U 4NN
Display of non illuminated hoarding sign measuring 4.14m x 7.02m for a temproary period f…
25/08120/ADV
2025
1 Marylebone Street London W1G 8JA
Installation of an air source heat pump within the external courtyard of the rear, lower…
25/08142/FULL
2025
Apartment 1.1 35 Marylebone High Street London W1U 4PY
Display of Christmas Decorations along Marylebone High St, 16 externally illuminated hang…
25/07400/ADV
2025 Approved
21 Westmoreland Street London W1G 8PN
Renovation of the entrance steps to 19 and 21 Wesley Street, reducing number of steps fro…
25/05280/FULL
2025
Crofton House 1 New Cavendish Street London W1G 8US
Refurbishment works to flat 7 the existing flat including formation of new kitchen and ba…
25/07065/LBC
2025
Crofton House 1 New Cavendish Street London W1G 8US
Refurbishment works to flat 7 the existing flat including formation of new kitchen and ba…
25/07064/FULL
2025
56 - 60 Weymouth Street London W1G 6NX
Installation of a green roof and external rooftop plant / machinery with associated acous…
25/06552/FULL
2025
17 New Cavendish Street London W1G 9UA
Variation of condition 2 of planning permission dated 12th February 1998 (RN:97/05508/FUL…
25/06483/FULL
2025 Approved
Basement And Ground Floor 65 Weymouth Street London W1G 8NU
Display of externally illuminated fascia sign measuring 1.5m X 0.28m
25/04854/ADV
2025 Approved
7 Moxon Street London W1U 4EP
Display of two halo-illuminated fascia signs measuring 0.225m x 0.895m, 0.225m x 0.894m…
25/04190/ADV
2025 Withdrawn
Marylebone Library 9 New Cavendish Street London W1G 9UQ
Use of two existing car parking spaces for placement of a parklet (which is not fixed to…
25/03439/FULL
2025
Marylebone Library 9 New Cavendish Street London W1G 9UQ
Provision of a public parklet replacing two existing car parking spaces for a temporary p…
25/04977/FULL
2025
98 - 101 Marylebone High Street London W1U 4SD
Raising the lintel of door to rear elevation.
25/02184/FULL
2025 Approved
31 New Cavendish Street London W1G 9TT
Display of non-illuminated fascia sign measuring 1200mm x 315mm, and non illuminated proj…
25/01214/ADV
2025
8 Marylebone High Street London W1U 4NN
Temporary hoarding graphics measuring 7020mm x 4140mm
25/00831/ADV
2025
16 De Walden Street London W1G 8RN
Variation of condition 1 of planning permission dated 7th October 2024 (RN:24/04641/FULL)…
25/00187/FULL
2024
8 Marylebone High Street London W1U 4NN
Display of an internally illuminated hanging sign measuring 0.45m x 0.85m. (SPLIT DECISIO…
24/08620/ADV
2024
8 Marylebone High Street London W1U 4NN
Installation of replacement shopfront including removal of the existing automatic sliding…
24/08274/FULL
2019 Approved
50 Weymouth Street London W1G 6NT
Erection of a mansard roof extension at rear second floor level on Beaumont Mews building…
19/01218/FULL
2019 Approved
Ground Floor 15 Marylebone High Street London W1U 4NU
Display of halo illuminated fascia sign (letters only) measuring 0.14m x 2.50m and an int…
19/05414/ADV
2019 Approved
12 De Walden Street London W1G 8RN
Infilling of under the main entrance staircase to form a new shower room for use in conne…
19/03239/FULL
2019 Approved
110 Marylebone High Street London W1U 4RY
Temporary change of use of part of the lower ground and ground floor to gym accommodation…
19/00563/FULL
2019 Approved
6 Marylebone High Street London W1U 4NJ
Display of a non illuminated banner measuring 1.86m x 9.00m spanning New Cavendish Street…
19/02896/ADV
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

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