Penthouse A 21 Davies Street London W1K 3DE Data via plota.co.uk

25/07862/FULL - Full Planning Permission Application Approved

Proposal

Replacement of all windows and doors, including their frames, on the upper level (6th floor), three windows including frames on the lower level (5th floor), and the replacement of glass within two windows on the lower level (5th floor). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
30 Oct 2025
✓
Validated
5 Nov 2025
✓
Consultation
20 Nov 2025
✓
Approved
17 Feb 2026

Approved on 17 Feb 2026 · Delegated Decision · Last checked 9 Oct 2026

Documents 36

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 17 Feb 2026 View ↗ PDF DELEGATED REPORT Report · 17 Feb 2026 View ↗

Statements & assessments 4

PDF HERITAGE STATEMENT Background Papers · 5 Nov 2025 View ↗ PDF SUSTAINABLE DESIGN STATEMENT Background Papers · 4 Nov 2025 View ↗ PDF DESIGN AND ACCESS STATEMENT Design and Access Statement · 30 Oct 2025 View ↗ PDF PENT A FIRE STATEMENT Background Papers · 30 Oct 2025 View ↗

Plans & drawings 15

PDF EXISTING LEVEL 5 PLAN Drawing · 30 Oct 2025 View ↗ PDF EXISTING LEVEL 6 PLAN Drawing · 30 Oct 2025 View ↗ PDF SITE LOCATION PLAN Drawing · 30 Oct 2025 View ↗ PDF EXISTING ELEVATION 01 AND 02 Drawing · 30 Oct 2025 View ↗ PDF EXISTING ELEVATION 03 AND 04 Drawing · 30 Oct 2025 View ↗ PDF EXISTING SECTION AA AND EE Drawing · 30 Oct 2025 View ↗ PDF EXISTING SECTION BB AND CC Drawing · 30 Oct 2025 View ↗ PDF EXISTING SECTION DD Drawing · 30 Oct 2025 View ↗ PDF PROPOSED LEVEL 5 PLAN Drawing · 30 Oct 2025 View ↗ PDF PROPOSED LEVEL 6 PLAN Drawing · 30 Oct 2025 View ↗ PDF PROPOSED ELEVATION 01 AND 02 Drawing · 30 Oct 2025 View ↗ PDF PROPOSED ELEVATION 03 AND 04 Drawing · 30 Oct 2025 View ↗ PDF PROPOSED SECTION AA AND EE Drawing · 30 Oct 2025 View ↗ PDF PROPOSED SECTION BB AND CC Drawing · 30 Oct 2025 View ↗ PDF PROPOSED SECTION DD Drawing · 30 Oct 2025 View ↗

Application forms 2

PDF APPLICATIONFORMREDACTED Application Form · 30 Oct 2025 View ↗ PDF FEECALCULATION Background Papers · 30 Oct 2025 View ↗

Consultation & comments 3

PDF HEALTH AND SAFETY COMMENT Consultee Comment · 10 Dec 2025 View ↗ PDF ECNSLT-STD EXT CONSULTEES Background Papers · 20 Nov 2025 View ↗ PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 20 Nov 2025 View ↗

Other documents 10

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 20 Nov 2025 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 20 Nov 2025 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 20 Nov 2025 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 20 Nov 2025 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 20 Nov 2025 View ↗ PDF WINDOWS Photo · 6 Nov 2025 View ↗ PDF RECEIPT OF APPLICATION Other · 3 Nov 2025 View ↗ PDF 1ST INVALID LETTER Background Papers · 3 Nov 2025 View ↗ PDF ATTACHMENTSUMMARY Background Papers · 30 Oct 2025 View ↗ PDF COVER LETTER Background Papers · 30 Oct 2025 View ↗

All documents on the council site ↗

Site constraints 11

Mayfair 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 2.5
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 ↗
35 listed buildings within 150 m
Nearest: Numbers 6 to 10 (Even) and Attached Railings, Grade II, 14 m away · 4 Grade II*, 31 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 35 with distances
Historic England ↗
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 132 m away: Berkeley Square; National infrastructure project 1312 m away: Thames Tideway Tunnel; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square; Town centre 14 m away: West End.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 2 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 3

Last sold for £8,600,000 in March 2024. Other property, leasehold.

More than one property is recorded at this address: HM Land Registry does not always give the flat or unit.

8 March 2024£8,600,000Recorded as a transfer outside a standard sale
7 June 2019£13,250,000Recorded as a transfer outside a standard sale
22 November 2004£4,400,000Flat or maisonette

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

Building

Floor area418 m² (4,499 sq ft)
Energy ratingC (72 out of 100)
PropertyDetached flat, 11 habitable rooms
Built2003 to 2006
HeatingBoiler and radiators, mains gas, Air source heat pump, warm air, electric
WallsSystem built, as built, insulated (assumed)

From the energy performance certificate lodged in July 2013, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

3 Sept 2026Approved

1 Davies Street London W1K 3DB

Installation of new plant equipment, relocation of existing plant and installati...

26/06037/FULL
13 Jul 2026Approved

52 - 54 Davies Street London W1K 5JF

Detailed drawings of dormers and method statements any invasive structural repai...

26/04664/ADLBC
8 Jun 2026Approved

3 Davies Street London W1K 3DJ

Display of an externally illuminated fascia sign measuring 0.35m x 4.05m and an ...

26/03738/ADV

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3 Nov 2026Pending

169 New Bond Street London W1S 4AN

Display of non illuminated hoarding sign measuring 5.477m X 5.556m

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3 Nov 2026Pending

226 Regent Street London W1B 3BR

Internal alterations associated with the retail fit-out of the ground floor and ...

26/07333/LBC
3 Nov 2026Pending

226 Regent Street London W1B 3BR

Display of a non-illuminated fascia sign measuring 0.28m x 1.94m and an external...

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2 Nov 2026Pending

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Replacement of windows, Installation of an external condenser to the rear elevat...

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2 Nov 2026Pending

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
W1K 3DE
Received
30 Oct 2025
Validated
5 Nov 2025
Ward
West End
Case officer
Show
Target decision
19 Feb 2026
Decision
Application Permitted
Decision date
17 Feb 2026
Decision level
Delegated Decision
Applicant
Show
Agent
ADL Planning Pty Ltd

How this decision compares

Decided in 104 days from validation, 28 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.

14 neighbours consulted · Last counted 9 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14435986
Planning Portal ref
PP-14435986
Comments by
24 Dec 2025
Site or press notice
20 Nov 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
5 Mount Street London W1K 3NE
External alterations including the removal of existing plant equipment and installation o…
25/07581/LBC
2025
5 Mount Street London W1K 3NE
External alterations including the removal of existing plant equipment and installation o…
25/07580/FULL
2025 Refused
5 Mount Street London W1K 3NE
Installation of retractable awnings; removal of existing plant equipment and installation…
25/05647/FULL
2025 Refused
5 Mount Street London W1K 3NE
Installation of retractable awnings; removal of existing plant equipment and installation…
25/05648/LBC
2025
28 Grosvenor Street London W1K 4QR
Demolition and rebuilding of the 4th floor and roof level to create a sunken roof terrace…
25/07048/FULL
2025 Approved
Hermione House 61 Grosvenor Street London W1K 3JE
Removal of stone stairs from the street down into the front lightwell; Removal of flagpol…
25/04608/FULL
2025 Withdrawn
Basement And Ground Floor 5 Mount Street London W1K 3NE
Replacement of existing plant equipment to the rear external lightwell; fascia, hanging a…
25/03732/LBC
2025 Withdrawn
Basement And Ground Floor 5 Mount Street London W1K 3NE
Replacement of existing plant equipment to the rear external lightwell and internal and e…
25/03731/FULL
2025 Approved
Basement And Ground Floor 5 Mount Street London W1K 3NE
Display of one internally illuminated fascia signs measuring 1.70m x 0.11m, and one inter…
25/03729/ADV
2025
Broadbent House 64 - 65 Grosvenor Street London W1K 3JH
Amendments to fourth floor glazing and installation of glazed doors for use of the existi…
25/02852/FULL
2025
26 Grosvenor Street London W1K 4QJ
New terrace at first floor level to rear, increase size of rear terrace at lower ground f…
25/01853/FULL
2025
26 Grosvenor Street London W1K 4QJ
Removal of water tank and existing projecting access enclosure on the roof and creation o…
25/01294/FULL
2025 Approved
2 - 2A Davies Street London W1K 3DJ
3 x London plane (T1, T2 & T3): Crown reduce to previous, most recent reduction points (r…
25/00551/TPO
2024
3 Davies Street London W1K 3DJ
Installation of external cooling units and associated equipment underneath the existing e…
24/07456/FULL
2024 Approved
9 Mount Row London W1K 3RG
Installation of air conditioning condensers on the flat/mansard roof above 3rd floor leve…
24/04704/FULL
2024
9 Mount Row London W1K 3RG
Proposed minor extension/alteration to rear elevation at 1st floor level
24/04550/FULL
2024
9 Mount Row London W1K 3RG
Erection of a first floor rear in-fill extension; alteration to ground floor rear fenestr…
24/01299/FULL
2024
55 Grosvenor Street London W1K 3HZ
Creation of two terraces on 2nd floor facing the rear courtyard and associated installati…
24/01169/FULL
2023 Withdrawn
Connaught House 1 - 3 Mount Street London W1K 3NB
Use of two areas of the public highway measuring 16.7m x 1.8m (Mount Street) and 7m x 2.5…
23/02329/TCH
2023 Withdrawn
Claridge House 32 Davies Street London W1K 4ND
Installation of 6 no. pole mounted antennas, 2 no. transmission dishes and 3 no. equipmen…
23/05140/FULL
2019 Approved
51-53 Grosvenor Street London W1K 3HH
Display for a temporary period of six months of a non-illuminated 'to let' board attached…
19/03518/AD7
2019 Approved
6 Mount Row London W1K 3SA
Installation of a cast iron ventilation grille to the under croft and door hooks to the u…
19/02268/LBC
2019 Approved
6 Mount Row London W1K 3SA
Installation of a cast iron ventilation grille to the under croft and door hooks to the u…
19/02267/FULL
2019 Approved
2-2A Davies Street London W1K 3DJ
3 x London planes: crown reduce to previous, most recent reduction points.
19/01166/TPO
2019 Approved
3 Davies Street London W1K 3LD
Relocation of 4 air-conditioning units from basement to first floor flat roof to the rear.
19/00031/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

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

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.