Flat 2 13 Montagu Street London W1H 7EX Data via plota.co.uk

25/04425/FULL - Full Planning Permission Application Approved

Proposal

Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acoustic flooring and fixtures and fittings throughout. (Linked with 25/04426/LBC) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
27 Jun 2025
✓
Validated
3 Jul 2025
✓
Consultation
21 Nov 2025
✓
Approved
20 Feb 2026

Approved on 20 Feb 2026 · Delegated Decision · Last checked 19 Oct 2026

Documents 31

Decision & officer reports 4

PDF GRANT OF FULL PP [PE] Decision Notice · 20 Feb 2026 View ↗ PDF DELEGATED REPORT Report · 20 Feb 2026 View ↗ PDF DELEGATED REPORT Report · 20 Feb 2026 View ↗ PDF DELEGATED REPORT Report · 20 Feb 2026 View ↗

Statements & assessments 3

PDF HERITAGE STATEMENT Heritage Statement · 3 Nov 2025 View ↗ PDF DESIGN AND ACCESS STATEMENT Superseded document · 27 Jun 2025 View ↗ PDF HERITAGE STATEMENT Superseded document · 27 Jun 2025 View ↗

Plans & drawings 17

PDF EXISTING AND PROPOSED SECTIONS Drawing · 3 Nov 2025 View ↗ PDF PROPOSED SECOND FLOOR - MECHANICAL PLAN Drawing · 3 Nov 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN - CEILING LAYOUT Drawing · 3 Nov 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN - SKIRTING LAYOUT Drawing · 3 Nov 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN Drawing · 3 Nov 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN - DEMOLITION PLAN Drawing · 3 Nov 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN - GENERAL ARRANGEMENT DRAWING Drawing · 3 Nov 2025 View ↗ PDF OOR PLAN - GENERAL ARRANGEMENT DRAWING Superseded document · 27 Jun 2025 View ↗ PDF EXISTING SECOND FLOOR PLAN Drawing · 27 Jun 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN Superseded document · 27 Jun 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN - DEMOLITION PLAN Superseded document · 27 Jun 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN - CEILING LAYOUT Superseded document · 27 Jun 2025 View ↗ PDF PROPOSED SECOND FLOOR PLAN - SKIRTING LAYOUT Superseded document · 27 Jun 2025 View ↗ PDF ACOUSTIC FLOOR DETAIL Drawing · 27 Jun 2025 View ↗ PDF PROPOSED FRONT ELEVATION Drawing · 27 Jun 2025 View ↗ PDF EXISTING FRONT ELEVATION Drawing · 27 Jun 2025 View ↗ PDF NEW FLAT DOOR DETAIL Drawing · 27 Jun 2025 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 27 Jun 2025 View ↗

Consultation & comments 1

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 21 Nov 2025 View ↗

Other documents 5

PDF CNSLT-LA SOCIETY Background Papers · 21 Nov 2025 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 21 Nov 2025 View ↗ PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 20 Nov 2025 View ↗ PDF RECEIPT OF APPLICATION Other · 1 Jul 2025 View ↗ PDF 1ST INVALID LETTER Background Papers · 1 Jul 2025 View ↗

All documents on the council site ↗

Associated applications 2

Site constraints 9

Grade II listed: 13 and 14, Montagu Street W1
List entry 1223338 · The pin is inside its outline · 46 more listed buildings within 150 m (46 Grade II)
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 the other 46 with distances
Historic England ↗
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 ↗
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
Registered park or garden 197 m away: Portman Square and Manchester Square; National infrastructure project 138 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 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.

Building

Floor area47 m² (506 sq ft)
Energy ratingC (69 out of 100), could reach B
PropertyMid-terrace flat, 2 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in October 2019, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
W1H 7EX
Received
27 Jun 2025
Validated
3 Jul 2025
Ward
Marylebone
Case officer
Show
Target decision
23 Feb 2026
Decision
Application Permitted
Decision date
20 Feb 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Frankham Consultancy Group

How this decision compares

Decided in 232 days from validation, 156 days slower 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.

8 neighbours consulted · Last counted 19 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14115441
Planning Portal ref
PP-14115441
Comments by
12 Dec 2025
Site or press notice
21 Nov 2025
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

2025
Installation of airbrick to front elevation, new secondary glazing, reconfiguration, acou…
25/04426/LBC
Within ~100m

Nearby activity

2025 Approved
Rutland Court 64 Upper Berkeley Street London W1H 7QT
Installation of a single wrought iron gate at the entrance to the passageway leading to a…
25/06129/FULL
2025 Approved
26 Montagu Mews South London W1H 7ES
Replacement of garage doors with timber windows.
25/05187/FULL
2025
Basement And Ground Floor 67 Upper Berkeley Street London W1H 7QX
Display for a temporary period of six months of a non-illuminated estate agent board loca…
25/07459/AD7
2025
Basement And Ground Floor 67 Upper Berkeley Street London W1H 7QX
Display for a temporary period of six months of a non-illuminated estate agent board loca…
25/07458/AD7
2025
Flat 2 68 Upper Berkeley Street London W1H 7QY
Internal alterations to the first floor flat with the inclusion of a new boiler flue pene…
25/06603/LBC
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 Approved
8 Montagu Mews South London W1H 7ER
Gas meter relocation to the front facade
25/04796/FULL
2025 Withdrawn
26 Montagu Mews South London W1H 7ES
Alteration of existing coach house/garage to kitchen and living room with new painted tim…
25/04074/CLOPUD
2025 Approved
68 Great Cumberland Place London W1H 7TX
1 x Japanese maple (T2): Reduce all round by approx. 1m, leaving furnishing growth . Thin…
25/03179/TCA
2025
Flat 4 1 Bryanston Square London W1H 2DH
Internal alterations including new partitions, joinery and cornices, kitchen and bathroom…
25/01336/LBC
2025
12 Upper Berkeley Street London W1H 7QD
Display for a temporary period of six months of a non-illuminated estate agent board atta…
25/01287/AD7
2025
Flat 7 1 Bryanston Square London W1H 2DH
Replacement of two rooflights and two crittal windows with timber box sash windows and re…
25/01181/LBC
2024
3 Brunswick Mews London W1H 7FB
Erection of new mansard roof extension.
24/08923/FULL
2024
Flat 1 1 Montagu Square London W1H 2LA
Tanking works to the existing pavement vault and scullery
24/08556/LBC
2024 Approved
Flat 2 16 Montagu Street London W1H 7EX
Replacement of all windows to double glazed units.
24/01344/FULL
2023 Refused
Flat 2 1A Bryanston Square London W1H 2DH
Installation of 5 new windows. (Linked to 23/00844/FULL)
23/00793/LBC
2023 Refused
Flat 2 1A Bryanston Square London W1H 2DH
Installation of 5 new windows (Linked to 23/00793/LBC)
23/00844/FULL
2023 Approved
15A New Quebec Street London W1H 7RT
Replacement of the existing roof coverings and leadwork.
23/08313/LBC
2017 Approved
44-48 Great Cumberland Place London W1H 7BS
Variation of condition 3 of listed building consent dated 17.05.2016 for Erection of a ma…
17/06141/LBC
2017 Approved
1 Bryanston Square London W1H 2DH
Installation of kitchen ventilation grille to front elevation and internal alterations to…
17/06507/LBC
2017 Approved
Flat 1 1 Bryanston Square London W1H 2DH
Installation of ventilation grille on front facade at basement level
17/06506/FULL
2017 Approved
44 Great Cumberland Place London W1H 7BS
Variation of listed building consent dated 17 May 2016 (RN: 15/10587) for erection of a m…
17/05507/LBC
2017 Approved
44 Great Cumberland Place London W1H 7BS
Variation of Condition 1 of planning permission dated 17 May 2016 (RN: 15/10586) for erec…
17/05506/FULL
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

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.