Flat 4 Carrington House Hertford Street London W1J 7RG Data via plota.co.uk
Proposal
Installation of replacement existing single glazed steel windows with double glazed steel windows and doors to cover Flats 4,8 and 503. Data via plota.co.uk
Application progress
Approved on 4 Aug 2026 · Delegated Decision · Last checked 23 Sept 2026
Documents 34
Decision & officer reports 3
Statements & assessments 3
Plans & drawings 16
Application forms 1
Consultation & comments 1
Other documents 10
Site constraints 11
Show all 82 with distances
- 18 m2-5, Hertford Street W1Grade II
- 19 m20, Shepherd Street W1Grade II
- 21 m4-8, TREBECK STREET W1 (See details for further address information)Grade II
- 21 m2 Bollards at North West and North East Corners of Junction With Hertford StreetGrade II
- 28 m45 and 46, Hertford Street W1Grade II
- 28 m8 AND 9, HERTFORD STREET W1 (See details for further address information)Grade II
- 30 m55, Shepherd Market W1Grade II
- 33 mFormer Number 18Grade II
- 41 m10, Hertford Street W1Grade I
- 42 m7, Shepherd Street W1Grade II
- 44 mBollard on South West Corner of Junction With Trebeck StreetGrade II
- 44 m1-23, SHEPHERD MARKET W1 (See details for further address information)Grade II
- 45 mLombard House Including 2b Trebeck StreetGrade II
- 48 mCurzon Mayfair CinemaGrade II
- 50 m25 and 27, Shepherd Market W1Grade II
- 50 m11, Hertford Street W1Grade II*
- 53 m1-5, Trebeck Street W1Grade II
- 56 m56, Shepherd Market W1Grade II
- 57 m12, Hertford Street W1Grade II
- 59 m54, Shepherd Market W1Grade II
- 64 m13, Hertford Street W1Grade II
- 70 m39, Curzon StreetGrade II
- 78 m32 and 34, Shepherd Market W1Grade II
- 80 mPark Lane Hotel (Eastern Block)Grade II
- 81 m1, Shepherd Street W1Grade II
- 81 mSt James's ClubGrade I
- 83 mTemple Against Mews Wall in Garden to Rear of Number 32Grade II
- 83 m36, Shepherd Market W1Grade II
- 84 m105, Piccadilly W1Grade II
- 87 m30, Shepherd Market W1Grade II
- 88 m1-4, White Horse Street W1Grade II
- 89 m32, Curzon Street W1Grade II
- 92 m31, Curzon Street W1Grade II
- 95 m16a, Curzon Street W1Grade II
- 95 m4-8, Shepherd Market W1Grade II
- 97 m30, Curzon Street W1Grade I
- 98 m101-104, Piccadilly W1Grade II
- 99 m36, Hertford StreetGrade II
- 100 mBunch of Grapes Public HouseGrade II
- 100 mThe Little House ClubGrade II
- 102 m15, Chesterfield Street W1Grade II
- 102 m17, Hertford Street W1Grade II
- 105 mChristchurchGrade II
- 105 m18, Shepherd Market W1Grade II
- 105 mNaval and Military ClubGrade I
- 106 mBollard on Corner With Brick StreetGrade II
- 107 mPart of Green Park HotelGrade II
- 108 m20 and 22, Shepherd Market W1Grade II
- 109 m1, Chesterfield Street W1Grade II
- 109 m47a, Curzon Street W1Grade II
- 110 m96 and 97, Piccadilly W1Grade II
- 111 m18, Hertford Street W1Grade II
- 116 m2, Chesterfield Street W1Grade II
- 117 m14, Chesterfield Street W1Grade II
- 117 m11, Brick StreetGrade II
- 117 m24, HALF MOON STREET W1 (See details for further address information)Grade II
- 120 m29, Curzon Street W1Grade II
- 120 m19, Hertford Street W1Grade II
- 120 m25, Half Moon Street W1Grade II
- 121 mCrewe HouseGrade II*
- 122 mPart of Green Park HotelGrade II
- 123 m10, Curzon Street W1Grade II
- 124 m28, Curzon Street W1Grade II
- 124 m12 and 13, Chesterfield Street W1Grade II
- 124 mPart of Green Park HotelGrade II
- 124 mThe Badminton ClubGrade II
- 125 m19, Queen Street W1Grade II
- 127 m3, Queen Street W1Grade II
- 128 m4, Chesterfield Gardens W1Grade II
- 133 mThird Church of Christ ScientistGrade II
- 133 m95, Piccadilly W1Grade II
- 136 m11, Chesterfield Street W1Grade II
- 137 mHertford ClubGrade II
- 143 m6, Queen StreetGrade II
- 143 m10, Chesterfield Street W1Grade II
- 143 m5-7, Chesterfield Gardens W1Grade II
- 143 mPart of Green Park HotelGrade II
- 145 m22 and 23, Hertford Street W1Grade II
- 147 m3 and 4, Derby Street W1Grade II
- 148 m7, Queen Street W1Grade II
- 149 m5, Derby StreetGrade II
- 150 m15, Half Moon Street W1Grade II
Checked on 6 October 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
From the energy performance certificate lodged in February 2021, the latest held for this property. The building may have changed since. View the certificate
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1J 7RG
- Received
- 7 May 2026
- Validated
- 12 May 2026
- Ward
- West End
- Case officer
- Show
- Target decision
- 5 Aug 2026
- Decision
- Application Permitted
- Decision date
- 4 Aug 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Altaras Architecture Ltd
- Freehold owner
- Show
How this decision compares
Decided in 84 days from validation, 29 days slower than Westminster's median of 55 for extensions. Approved, as 88% of extensions here are.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
166 neighbours consulted · Last counted 23 Sept 2026
Consultation & key dates
- Alt. reference
- PP-14918540
- Planning Portal ref
- PP-14918540
- Comments by
- 22 Jul 2026
- Site or press notice
- 22 Jun 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
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.
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.
Freehold owner and leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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Flat 4 Carrington House Hertford Street London W1J 7RG
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Freehold owner and leaseholders, on paid plans
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