Flat 2 5 Montagu Square London W1H 2LA Data via plota.co.uk

26/04418/FULL - Full Planning Permission Application Pending
Extensions & alterationsListed buildings

Proposal

Installation of secondary glazing to existing historic single glazed timber windows. Replacement of existing window with new timber double glazed unit. (Linked with 26/04419/LBC) 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
3 Jul 2026
Decision
Awaiting decision

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

Documents 14

Statements & assessments 2

PDF DESIGN AND ACCESS STATEMENT Design and Access Statement · 3 Jul 2026 View ↗ PDF HERITAGE STATEMENT Heritage Statement · 3 Jul 2026 View ↗

Plans & drawings 9

PDF SITE LOCATION PLAN Location Plan · 3 Jul 2026 View ↗ PDF 002 - EXISTING FLAT 2 FLOOR PLAN Drawing · 3 Jul 2026 View ↗ PDF 003 - EXISTING ELEVATIONS Drawing · 3 Jul 2026 View ↗ PDF 004 - PROPOSED FLAT 2 FLOOR PLAN Drawing · 3 Jul 2026 View ↗ PDF 005 - PROPOSED ELEVATIONS Drawing · 3 Jul 2026 View ↗ PDF 006 - PROPOSED DETAIL A Drawing · 3 Jul 2026 View ↗ PDF 007 - PROPOSED DETAIL B Drawing · 3 Jul 2026 View ↗ PDF 008 - PROPOSED DETAIL C Drawing · 3 Jul 2026 View ↗ PDF 009 - PROPOSED WINDOW DETAILS Drawing · 3 Jul 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 3 Jul 2026 View ↗

Other documents 2

PDF RECEIPT OF APPLICATION Other · 6 Jul 2026 View ↗ PDF PHOTOGRAPHS Photo · 3 Jul 2026 View ↗

All documents on the council site ↗

Nearby new applications

Bradbury House 1 - 5 Cosway Street London NW1 5NR

Use of the building at ground to fifth floors as a sui generis hostel comprising...

26/04446/CLEUD - 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

33 Manchester Street London W1U 7LQ

Replacement of windows and door at all revelations with new double glazed units ...

26/04421/LBC - 3 Jul 2026

33 Manchester Street London W1U 7LQ

Replacement of windows and door at all revelations with new double glazed units ...

26/04420/FULL - 3 Jul 2026

16 Bryanston Street London W1H 7EF

Details of a management plan; pursuant to condition 5 of planning permission dat...

26/04389/ADFULL - 2 Jul 2026

142 Wigmore Street London W1U 3SH

Replacment shopfront including refurbishment and instalation of external condens...

26/04391/FULL - 2 Jul 2026

Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
W1H 2LA
Received
3 Jul 2026
Validated
3 Jul 2026
Ward
Marylebone
Case officer
Track to view
Target decision
28 Aug 2026
Applicant
Track to view
Agent
MDB Associates

Consultation & key dates

Alt. reference
PP-14787222
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
Like for like replacement of a de-bonded Lath and Plaster ceiling to the living room.
23/00372/LBC
Within ~100m

Nearby activity

2025
1 Montagu Square London W1H 2LA
Installation of 1 Portland Stone step to match existing; Installation of Helifix Bars int…
25/06616/LBC
2025
1 Gloucester Place Mews London W1U 8BA
Removal of the existing asphalt flat roof at first floor level and installation of a vent…
25/06633/FULL
2025 Approved
Flat 4 58 Montagu Square London W1H 2LS
Internal alterations to flat at fourth floor level including installation of a spiral sta…
25/04771/LBC
2025
Flat 2 13 Montagu Street London W1H 7EX
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acou…
25/04426/LBC
2025
Flat 2 13 Montagu Street London W1H 7EX
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acou…
25/04425/FULL
2025
Flat 3 12 Montagu Square London W1H 2LD
Replace existing rear door with hardwood double doors with fan light over and fixed side…
25/02495/LBC
2024
Flat 1 58 Montagu Square London W1H 2LS
Creation of a WC, aligning the doors of the flat and minor internal layout amendments.
24/08812/LBC
2024
Flat 3 17 Montagu Square London W1H 2LE
Replacement of main flat door, door entrance of flat 4 above, three casement windows to t…
24/08803/FULL
2024
Flat 3 17 Montagu Square London W1H 2LE
Replacement of main flat door, door entrance of flat 4 above, three casement windows to t…
24/08804/LBC
2024
Flat 1 1 Montagu Square London W1H 2LA
Tanking works to the existing pavement vault and scullery
24/08556/LBC
2024 Approved
Flat 1 8 Montagu Square London W1H 2LB
Installation of air conditioning units within enclosure within rear lower ground floor le…
24/07049/LBC
2024
20 Gloucester Place Mews London W1U 8BA
Alterations to the street elevation, including the enlargement and replacement of the gro…
24/07854/FULL
2024 Approved
47 Gloucester Place London W1U 8JE
Internal alterations, fire protection to the single staircase from the lower ground floor…
24/01596/LBC
2024 Approved
30 Gloucester Place London W1U 8PL
Use of part ground and part lower ground floor as dual alternative use as office (Class E…
24/02433/FULL
2024 Approved
Flat 2 16 Montagu Street London W1H 7EX
Replacement of all windows to double glazed units.
24/01344/FULL
2024
47 Gloucester Place London W1U 8JE
Installation of fire curtains/barriers at ground floor level and half landing between gro…
24/03625/LBC
2024 Approved
27 Gloucester Place London W1U 8HU
Replacement of two conservation rooflights with rooflight windows.
24/01707/LBC
2024 Approved
27 Gloucester Place London W1U 8HU
Replacement of two conservation rooflights with rooflight windows.
24/01706/FULL
2023 Approved
30 Gloucester Place London W1U 8PL
Replacement modern double glazed Georgian Style sash windows to match the existing sash w…
23/06165/LBC
2024
12 Gloucester Place Mews London W1U 8BA
Erection of single storey front extension at ground floor level to enlarge dwelling (Clas…
24/02870/FULL
2018 Approved
8 Gloucester Place Mews London W1U 8BA
Replacement windows and front door.
18/10881/FULL
2019
89 George Street London W1U 8NL
Variation of condition 1 and 2 and removal of 3 and 4 of listed building consent dated 27…
19/01573/LBC
2019
60 Montagu Square London W1H 2LT
Removal of existing modern conservatory and replacement at first floor level by new exten…
19/01329/LBC
2019
60 Montagu Square London W1H 2LT
Removal of existing modern conservatory and replacement at first floor level by new exten…
19/01328/FULL
2018 Withdrawn
8 Gloucester Place Mews London W1U 8BA
Replacement of windows and front door. (Linked to 18/10881/FULL)
18/10882/LBC
Westminster
Planning Authority Score
3.7/10
Below average
#209 of 292 councils
Relevant to this application:
Householder 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