11 Robert Adam Street London W1U 3HN Data via plota.co.uk

26/03101/LBC - Listed Building Consent Application Pending
Extensions & alterationsListed buildings

Proposal

Installation of new secondary glazing to the internal faces of existing single glazed historic windows , including new double glazed timber windows to replace existing non historic windows. (Linked with 26/03100/FULL) 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 ↗

Application progress

✓
Received
12 May 2026
Decision
Awaiting decision

This application is under consideration - no decision has been issued yet.

Documents 2

Other documents 2

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 10 Jun 2026 View ↗ PDF RECEIPT OF APPLICATION Other · 14 May 2026 View ↗

All documents on the council site ↗

Other new applications on this street

33 Robert Adam Street London W1U 3HP

Variation of condition 3 of planning permission dated 19th February 2024 (RN:23/...

26/02559/FULL - 17 Apr 2026

Nearby new applications

6 Upper Wimpole Street London W1G 6LG

Details (photographs and/or manufacturers' specifications) of the external facin...

26/04499/ADFULL - 6 Jul 2026

Flat 2 5 Montagu Square London W1H 2LA

Installation of secondary glazing to existing historic single glazed timber wind...

26/04419/LBC - 3 Jul 2026

Flat 2 5 Montagu Square London W1H 2LA

Installation of secondary glazing to existing historic single glazed timber wind...

26/04418/FULL - 3 Jul 2026

8 Bentinck Street London W1U 2BJ

Details of a sample panel of new brickwork pursuant to Condition 8 of planning p...

26/04437/ADFULL - 3 Jul 2026

4 Marylebone Mews London W1G 8PY

Internal refurbishment of existing Studio Mews house including replacement of gl...

26/04440/LBC - 3 Jul 2026

4 Marylebone Mews London W1G 8PY

Internal refurbishment of existing Studio Mews house including replacement of gl...

26/04439/FULL - 3 Jul 2026

Important details

Council
Westminster
Application type
Listed Building Consent Application
Postcode
W1U 3HN
Received
12 May 2026
Validated
12 May 2026
Ward
Marylebone
Case officer
Track to view
Target decision
7 Jul 2026
Applicant
Track to view
Agent
MDB Associates

Consultation & key dates

Alt. reference
PP-14703993
Press notice
17 Jun 2026
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

2024
Installation of Secondary glazing to the windows of the front elevation of Flat E.
24/04676/LBC
Within ~100m

Nearby activity

2025 Refused
12 Baker Street London W1U 3AA
Installation of a service hatch in the existing shopfront
25/06083/FULL
2025
The Wallace Collection Gallery Manchester Square London
The removal of a modern, insensitively installed partition, that currently divides two of…
25/07471/LBC
2025
Basement And Ground Floor 6 - 7 Portman Square London W1H 6NA
Display of two internally illuminated projecting sign measuring 0.75m x 0.75m, 0.18m x 1…
25/07373/ADV
2025 Refused
42 - 44 George Street London W1U 7ES
Alterations to shopfront including installation of replacement timber frame glazing to wi…
25/04991/FULL
2025 Approved
16 Baker Street London W1U 3HS
Display of 11 vinyls on the external ground floor windows for a temporary period of one y…
25/06013/ADV
2025
Flat 3 11 Robert Adam Street London W1U 3HN
Installation of secondary glazing to Flat C at first floor level.
25/03055/LBC
2025 Approved
4 Fitzhardinge Street London W1H 6EG
Display for a temporary period of six months of a non-illuminated estate agent board atta…
25/01885/AD7
2025
42 - 44 George Street London W1U 7ES
Enlargement of existing rear lower ground floor window
25/01202/FULL
2025
9 Robert Adam Street London W1U 3HN
Installation of an overflow pipe from existing roof, including new rainwater hopper and d…
25/00754/FULL
2025
9 Robert Adam Street London W1U 3HN
Installation of an overflow pipe from existing roof, including new rainwater hopper and d…
25/00755/LBC
2024
Second Floor 3 Fitzhardinge Street London W1H 6EF
Installation of electrical floor boxes within existing timber floor boards to second floo…
24/07400/LBC
2024
Orchard Court Portman Square London W1H 6LE
Display of vinyls on glazing over a total area of 8m x 152m and graphics applied to hoard…
24/06202/ADV
2024
5 Fitzhardinge Street London W1H 6ED
Internal upgrades, repair and extension of a Georgian Townhouse; new internal finishes an…
24/05919/LBC
2024
5 Fitzhardinge Street London W1H 6ED
Building services to be removed, replaced and relocated, installation of air source heat…
24/05918/FULL
2024 Approved
Flat 23 Orchard Court Portman Square London W1H 6LE
Installation of two condenser units at roof level.
24/01232/FULL
2024
6 Seymour Mews London W1H 6BE
External alterations, extension at ground floor, excavation to provide new basement; and…
24/02777/FULL
2024 Approved
Ground Floor 3 Fitzhardinge Street London W1H 6EF
Minor internal alterations to include two new partitions and doors to partition off the e…
24/02386/LBC
2024 Approved
18 Baker Street London W1U 3BX
Proposed front entrance design change introducing a mechanical door opening, installation…
24/00490/FULL
2023 Approved
33 Robert Adam Street London W1U 3HP
Removal of facades at Ground & First; New Entrance, with stone features, glazed facade, n…
23/06458/FULL
2023 Approved
Milner House 14 Manchester Square London W1U 3PP
Upgrading of glazing to window and door openings on the front and rear elevation. (Linked…
23/01298/LBC
2018 Approved
13 Manchester Square London W1U 3PP
Internal alterations and installation of plaque to front elevation.
18/03418/LBC
2018 Approved
40 George Street London W1U 7DR
Display for a temporary period of six months of a non-illuminated estate agent's board on…
18/03471/AD7
2018 Approved
7 Baker Street London W1U 3AH
Use of the public highway for the placing of 5 tables, 9 chairs, 2 stools and 7 Planters…
18/01030/TCH
2018 Approved
Flat 20 Orchard Court Portman Square London W1H 6LE
Replacement of windows to third floor apartment on Portman Square
18/01463/FULL
2018 Refused
12 Baker Street London W1U 3AA
Installation of a telephone kiosk on the pavement outside 12 Baker Street.
18/00921/TELCOM
Westminster
Planning Authority Score
3.7/10
Below average
#209 of 292 councils
Relevant to this application:
Other decisions

Westminster is slower than most councils at deciding householder applications, ranking #227 out of 292. Only 27% of applications have the time limit extended, well below the 40% 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 79% approved vs 90% nationally.

One of the strictest councils
only 79% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision performance
Based on MHCLG data, 2025
86%
Overall approval rate
Below avg (87%) #200 of 292
79%
Householder approved
Below avg (90%) #279 of 292
53%
Decided in 8 weeks
Below avg (64%) #227 of 292
27%
Extended time limit
Below avg (40%) #43 of 292
86%
Minor dwellings approved
14 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
86%
Change of use approved
140 decided
4,828
Total decisions
669 refused in 2025
Source: MHCLG planning statistics · See full council rankings