Pegasus House 37 - 43 Sackville Street London W1S 3EH Data via plota.co.uk

25/07407/ADFULL - Approval of Details (Full PP) Approved

Proposal

Detailed drawings (scales 1:20, 1:5 and 1:1) of various roof level elements for the 4th floor terrace, 6th floor terrace, 7th floor roofs, mansard roofs, zinc cladding, plant screen and chimneys pursuant to partial discharge of condition 7 of planning permission dated 22nd September 2021 (RN: ) Data via plota.co.uk

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View original council record ↗Last checked 10 Oct 2026, 07:21

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Application progress

✓

Received

14 Oct 2025

✓

Validated

11 Nov 2025

✓

Approved

12 Jan 2026

Approved on 12 Jan 2026 · Delegated Decision · Last checked 9 Oct 2026

Documents 126

Decision & officer reports 2

PDF DRAFT DECISION / DELEGATED REPORT Decision Notice · 10 Feb 2026 View ↗ PDF DECISION NOTICE Decision Notice · 10 Feb 2026 View ↗

Statements & assessments 5

PDF DESIGN DOCUMENT: PART 5 Design and Access Statement · 14 Oct 2025 View ↗ PDF DESIGN DOCUMENT: PART 3 Design and Access Statement · 14 Oct 2025 View ↗ PDF DESIGN DOCUMENT: PART 4 Design and Access Statement · 14 Oct 2025 View ↗ PDF DESIGN DOCUMENT: PART 1 Design and Access Statement · 14 Oct 2025 View ↗ PDF DESIGN DOCUMENT: PART 2 Design and Access Statement · 14 Oct 2025 View ↗

Plans & drawings 77

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 14 Oct 2025 View ↗

Associated applications 15

Part of

VariationApproved8 Sep 2021council archive

Conditions 5, 7, 7a, 17, 20 discharged
- ConditionsDetailed drawings (scales 1:20, 1:5 and 1:1) of various roof level elements for the 4th floor…This application11 Nov 202525/07407/ADFULL
- Show 13 more · 13 approved
  - ConditionsDetails of servicing management plan pursuant to condition 17 of planning permission dated 19…3 Jun 202626/03619/ADFULL
  - ConditionsDetails of new facades and shopfronts on the Piccadilly façade, Sackville Street Façade…21 Apr 202626/01183/ADFULL
  - ConditionsDetails of dormers pursuant to partial condition 7 (a) of planning permission dated 22…21 Apr 202625/07408/ADFULL
  - ConditionsDetails of design elements for external signage to residential and commercial entrances…17 Apr 202626/02535/ADFULL
    Conditions 5 discharged
    - ConditionsDetails of design elements for external signage to residential and commercial entrances…17 Apr 202626/02617/ADLBC
  - ConditionsDetailed drawings pursuant to condition 7(part) of planning permission dated 21 September 2021…11 Mar 202626/01596/ADFULL
  - ConditionsDetailed drawings of balcony and terrace railings pursuant to Condition 7(Part)…3 Mar 202626/01323/ADFULL
  - ConditionsDetails of facing materials (windows and secondary glazing) pursuant to Condition 5…11 Feb 202626/00819/ADFULL
  - ConditionsDetails of new facades - typical details at all levels including roof level plant pursuant…11 Feb 202626/00817/ADFULL
  - ConditionsDetails of proposed timber windows for the retained facades pursuant to condition 7 (part)…11 Feb 202626/00816/ADFULL
  - ConditionsDetails of facing materials (balustrade details) pursuant to Condition 5 of planning…11 Feb 202626/00818/ADFULL
  - ConditionsDetailed drawings (at scale 1:20, 1:5 and 1:1) of new windows on Sackville Street pursuant…5 Feb 202625/07409/ADFULL
  - ConditionsDetailed drawings of the proposed planters at 5th floor level pursuant to Condition 20…21 Nov 202525/08192/ADFULL

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 ↗

2 Article 4 directions

Article 4 Basement Development Permitted Rights Removed · Article 4 Direction Class E To C3 In Central Activities Zone. 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 ↗

Town centre: West End

A designated centre in the London Plan.

Shops, services and active frontages are protected in centres, and main town centre uses are steered here first.

42 listed buildings within 150 m

Nearest: 36, Sackville Street W1, Grade II*, 10 m away · 4 Grade I, 10 Grade II*, 28 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 42 with distances

10 m36, Sackville Street W1Grade II*
17 mMelbourne House (A1 to A15)Grade I
19 mAlbany CourtyardGrade I
21 m34 and 35, Sackville Street W1Grade II
28 m39 AND 40, PICCADILLY W1 (See details for further address information)Grade II
33 mBodley House Chambers B1 to 6, C1 to 6, D1 to 6, E1 to 6, F1 to 3, G1 to 3, H1 to 6, I1 to 6, K1 to 6 and L1 to 6Grade I
36 m33, Sackville Street W1Grade II
44 m32, Sackville Street W1Grade II
46 mThe Learned Societies, Forecourt Buildings to Burlington HouseGrade II*
47 m2 Lamp Standards Numbered 1 and 2Grade II
53 m31, Sackville Street W1Grade II
54 m30 and 30a, Sackville Street W1Grade II
66 mRoyal Academy including Burlington House and Galleries and Royal Academy Schools BuildingsGrade II*
71 mThe QuadrantGrade II
72 mFormer Royal Institute of Painters in Water Colours Premises, Now Forming Part of Prince's HouseGrade II
77 m29, Sackville Street W1Grade II*
78 mFormer Midland BankGrade II*
83 mPiccadilly HotelGrade II*
86 mStatue of Sir Joshua Reynolds in Burlington House CourtyardGrade II
91 mEasternmost K2 Telephone Kiosk Within Entrance Portal of Burlington HouseGrade II
97 mPrototype K2 telephone kiosk to western side of entrance portal of Burlington HouseGrade II*
100 m8 Lampstandards in Burlington House CourtyardGrade II
104 mSouthwood Memorial in St James's ChurchyardGrade II
108 mChurch of St James's PiccadillyGrade I
114 mRoyal Academy of ArtsGrade II*
116 mThe QuadrantGrade II
122 m1-72, BURLINGTON ARCADE W1 (See details for further address information)Grade II
125 mPiccadilly ArcadeGrade II
131 m1, SAVILE ROW W1 (See details for further address information)Grade II
133 m88, Jermyn Street Sw1Grade II
133 m89, Jermyn Street Sw1Grade II
133 m90, Jermyn Street Sw1Grade II*
134 mVigo House Vigo House, Empire House, Westmorland House and New GalleryGrade II
136 m93, Jermyn Street Sw1Grade II
137 m94, Jermyn Street Sw1Grade II
139 m95, Jermyn Street Sw1Grade II
139 m106-130, REGENT STREET W1 (See details for further address information)Grade II
141 m96, Jermyn Street Sw1Grade II
141 mDudley HouseGrade II
141 mSimpsonsGrade II*
144 mThree K6 Telephone kiosks, outside Royal Academy of ArtsGrade II
144 mDenman HouseGrade II

Historic England ↗

National infrastructure project 633 m away: Thames Tideway Tunnel

The site is 633 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 378 m).

Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.

Planning Inspectorate project page ↗

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 249 m away: St James's Square; 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 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.

Building

Floor area83 m² (893 sq ft)

Energy ratingF (28 out of 100), could reach C

PropertyDetached flat, 2 habitable rooms

BuiltBefore 1900

HeatingRoom heaters, electric

WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in April 2015, 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: Approval of Details (Full PP)
Postcode: W1S 3EH
Received: 14 Oct 2025
Validated: 11 Nov 2025
Ward: West End
Case officer: Show
Target decision: 6 Jan 2026
Decision: Application Permitted
Decision date: 12 Jan 2026
Decision level: Delegated Decision
Applicant: Show
Agent: Gerald Eve

How this decision compares

Decided in 62 days from validation, 25 days slower than Westminster's median of 37 for discharge of conditions. Approved, as 91% of discharge of conditions here are.

This one62d

Council37d

UK53d

68%decided within 8 weeks

91%approved

1,908decided in the last year

Plota live figures for discharge of conditions decided by Westminster in the last twelve months, from validation. Westminster decision record →