51 Upper Montagu Street London W1H 1FQ Data via plota.co.uk

26/06443/ADFULL - Approval of Details (Full PP) Pending
Admin / procedural

Proposal

Details of Desktop study and Site investigation reports pursuant to partial discharge of Condition 11 (Phase 2 and Phase 3) of planning permission dated 24th October 2025 (RN: ). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
21 Sept 2026
Decision
Expected by 16 Nov 2026

This application is under consideration - no decision has been issued yet. A decision is expected by 16 Nov 2026.

Documents 6

Statements & assessments 2

PDF PHASE II CONTAMINATION ASSESSMENT Background Papers · 21 Sept 2026 View ↗ PDF PHASE I GEO-ENVIRONMENTAL ASSESSMENT Background Papers · 21 Sept 2026 View ↗

Plans & drawings 1

PDF LOCATION PLAN Location Plan · 21 Sept 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 21 Sept 2026 View ↗

Other documents 2

PDF RECEIPT OF APPLICATION Other · 23 Sept 2026 View ↗ PDF COVER LETTER Background Papers · 21 Sept 2026 View ↗

All documents on the council site ↗

Associated applications 3

Site constraints 7

Grade II listed: 49 and 51, Upper Montagu Street W1
List entry 1357322 · 3 m away · 35 more listed buildings within 150 m (1 Grade I, 34 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 35 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 Named permitted development rights are withdrawn here.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
Inside the City of Westminster built-up area; Town centre 14 m away: Marylebone Road.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 24 September 2026. Historic England, the Environment Agency, Natural England 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 2

Last sold for £3,000,000 in September 2023. Terraced house, freehold.

5 September 2023£3,000,000
19 February 2016£3,250,000

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

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Other new applications on this street

17 Sept 2026Pending

Flat 4 8 Upper Montagu Street London W1H 2PB

Replacement of an existing timber single-glazed sash windows with a timber sliml...

26/06369/LBC
21 Jul 2026Pending

Flat 1 8 Upper Montagu Street London W1H 2PB

Replacement of existing windows with timber slimline double-glazed windows, incl...

26/04890/LBC
15 May 2026Approved

26 Upper Montagu Street London W1H 1RP

Erection of a one and a half storey rear extension to enlarge HMO, installation ...

26/03214/FULL
4 Dec 2025Approved

21 Montagu Street London W1H 7EX

Installation of new external vent and timber louvred door in lightwell (21-22 Mo...

25/08812/FULL

Nearby new applications

17 Sept 2026Pending

Flat 4 8 Upper Montagu Street London W1H 2PB

Replacement of an existing timber single-glazed sash windows with a timber sliml...

26/06369/LBC
17 Sept 2026Pending

Flat 4 8 Upper Montagu Street London W1H 2PB

Replacement of an existing timber single-glazed sash windows with a timber sliml...

26/06370/FULL
18 Sept 2026Pending

134 George Street London W1H 5DN

Details of manufacturers specifications of the facing materials you will use, in...

26/06427/ADFULL
11 Aug 2026Pending

214 Edgware Road London W2 1DH

Replacement of existing and rear elevation windows with UPVC windows.

26/05444/FULL
28 Sept 2026Pending

15 - 17 Blandford Street London W1U 3DG

Installation of an acoustic silencer to the existing kitchen extract duct at roo...

26/06630/FULL
11 Sept 2026Pending

1 Wyndham Yard London W1H 2QF

Proposed reconfiguration of existing front door and adjacent garage door with th...

26/06259/FULL

Important details

Council
Westminster
Application type
Approval of Details (Full PP)
Postcode
W1H 1FQ
Received
21 Sept 2026
Validated
21 Sept 2026
Ward
Marylebone
Case officer
Show
Target decision
16 Nov 2026
Applicant
Show
Agent
ADL Planning Pty Ltd

Public comments

No public comments yet.

Last counted 1 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Env. assessment
No

Historical activity at this location

30 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025 Approved
Internal alterations including lowering of the floor level to the lower ground floor; Ins…
25/03874/FULL
2025 Approved
Internal alterations including lowering of the floor level to the lower ground floor; Ins…
25/03875/LBC
2024 Approved
Investigative opening up works at all floor levels.
24/06878/LBC
2016 Approved
Internal alterations.
16/04946/LBC
2016 Withdrawn
Erection of stair access enclosure to existing roof terrace
16/05380/FULL
Within ~100m

Nearby activity

2025 Approved
Flat 4 York House 39 Upper Montagu Street London W1H 1FR
Installation of double glazed steel casement windows within the retained existing timber…
25/03577/FULL
2025
129 - 137 Marylebone Road London NW1 5QD
Replacement of existing 8th floor window with a louvre.
25/06969/FULL
2025 Approved
Flat 10 Bryanston Mansions York Street London W1H 1DA
Replacement windows to the front and rear elevations of Flat 10.
25/04421/FULL
2025
Flat 19 York House 39 Upper Montagu Street London W1H 1FR
Installation of double glazed steel casement windows within the retained existing timber…
25/06040/FULL
2024
129 - 137 Marylebone Road London NW1 5QD
Variation of condition 35 of planning permission dated 28th November 2022 (RN:21/06044/FU…
24/08987/FULL
2024
119 Gloucester Place London W1U 6JX
Installation of self-standing kitchenettes to hotel rooms and minor internal alterations…
24/08905/LBC
2024
28 Wyndham Street London W1H 1DD
Internal alterations associated with the general refurbishment. (Linked to 24/07855/FULL)
24/07856/LBC
2024
28 Wyndham Street London W1H 1DD
Minor refurbishment and extension of the property by retaining the existing closet wing…
24/07855/FULL
2024
13 Salisbury Place London W1H 1FJ
Alterations to the front facade and in the courtyard including replacement first floor do…
24/06169/FULL
2024
62 Upper Montagu Street London W1H 1SW
Installation of lighweight plasterboard and glass partition.
24/05263/LBC
2024
52 Upper Montagu Street London W1H 1SJ
Creation of a new external stair in the front lightwell and associated works. (Linked wit…
24/05218/FULL
2024
52 Upper Montagu Street London W1H 1SJ
Creation of a new external stair in the front lightwell and associated works. (Linked wit…
24/05219/LBC
2024
13 Salisbury Place London W1H 1FJ
Display of an internally illuminated projecting sign measuring 70cm x 70cm, and a non-ill…
24/04958/ADV
2024 Approved
Westar House 139 - 151 Marylebone Road London NW1 5QE
Display of an internally illuminated fascia sign measuring 80cm x 360cm; and an internall…
24/03117/ADV
2024 Refused
29 Knox Street London W1H 1FS
Demolition of an existing single storey extension, and the erection of a single storey re…
24/01731/FULL
2024 Refused
29 Knox Street London W1H 1FS
Demolition of an existing single storey extension, and the erection of a single storey re…
24/01732/LBC
2023 Approved
13 Salisbury Place London W1H 1FJ
Use of part of ground and first floors (rear building) as offices, social support facilit…
23/08920/FULL
2023 Refused
Basement And Ground Floor 62 Upper Montagu Street London W1H 1SW
Changes to the front elevation to provide a coffee trading outlet to the street with mino…
23/05258/LBC
2023 Refused
Basement And Ground Floor 62 Upper Montagu Street London W1H 1SW
Changes to the front elevation to provide a coffee trading outlet to the street with mino…
23/05257/FULL
2023
50 York Street London W1H 1GD
Installation of one air condenser unit within the front vault under the pavement located…
23/07818/LBC
2016 Approved
18 Thornton Place London W1H 1FL
Erection of a single storey rear extension at ground floor level.
16/05612/FULL
2016 Approved
Flat 34 York House 39 Upper Montagu Street London W1H 1FR
Replacement of window with glazed door to rear elevation at lower ground floor level.
16/05070/FULL
2016 Approved
North West House 119-127 Marylebone Road London NW1 5PY
Display of 4 halo illuminated fascia signs, an internally illuminated projecting sign, a…
16/01098/ADV
2016 Approved
53 Upper Montagu Street London W1H 1SE
Damp proofing works at basement level.
16/01443/LBC
2016 Approved
45 York Street London W1H 1PW
Display of a non-illuminated advertising hoarding at ground floor level measuring 2.4m x…
16/00142/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.

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