17 Hertford Street London W1J 7RS Data via plota.co.uk
Proposal
Internal alterations to the basement including new lightweight timber-stud partitions to reorganise the existing basement layout; Installation of new sanitaryware in a newly configured bathroom; Replacement of modern kitchen fittings; and Installation of traditional four-panel timber doors, architraves and ironmongery designed to match existing doors. Data via plota.co.uk
Application progress
Approved on 30 Sept 2026 · Delegated Decision · Last checked 1 Oct 2026
Documents 11
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 3
Application forms 2
Site constraints 11
Show the other 51 with distances
- 3 m18, Hertford Street W1Grade II
- 10 mChristchurchGrade II
- 12 m19, Hertford Street W1Grade II
- 12 m11, Brick StreetGrade II
- 22 m36, Hertford StreetGrade II
- 29 mHertford ClubGrade II
- 36 m13, Hertford Street W1Grade II
- 38 m22 and 23, Hertford Street W1Grade II
- 43 m12, Hertford Street W1Grade II
- 44 mBollard on Corner With Brick StreetGrade II
- 50 m11, Hertford Street W1Grade II*
- 58 m10, Hertford Street W1Grade I
- 62 mPark Lane Hotel (Eastern Block)Grade II
- 66 m45 and 46, Hertford Street W1Grade II
- 69 m8 AND 9, HERTFORD STREET W1 (See details for further address information)Grade II
- 83 m30, Curzon Street W1Grade I
- 85 m28, Curzon Street W1Grade II
- 85 m31, Curzon Street W1Grade II
- 86 mTemple Against Mews Wall in Garden to Rear of Number 32Grade II
- 89 m21, Pitts Head MewsGrade II
- 90 m29, Curzon Street W1Grade II
- 91 m3 and 4, Derby Street W1Grade II
- 91 m5, Derby StreetGrade II
- 98 mAspinall Curzon, and Stable Quarters at RearGrade II*
- 98 m32, Curzon Street W1Grade II
- 104 m117-119, Piccadilly W1Grade II
- 105 m2, Derby StreetGrade II
- 106 m2 Bollards at North West and North East Corners of Junction With Hertford StreetGrade II
- 107 mRoyal Air Force ClubGrade II
- 107 mCurzon Mayfair CinemaGrade II
- 112 m2-5, Hertford Street W1Grade II
- 114 mThe Cavalry ClubGrade II*
- 116 mSt James's ClubGrade I
- 118 m19, Curzon Street W1Grade II
- 120 m20, Shepherd Street W1Grade II
- 125 m4-8, TREBECK STREET W1 (See details for further address information)Grade II
- 126 mPart of Aspinall CurzonGrade II*
- 127 m55, Shepherd Market W1Grade II
- 130 mLombard House Including 2b Trebeck StreetGrade II
- 131 m4, Chesterfield Gardens W1Grade II
- 136 mUnitag HouseGrade II
- 140 m15, Chesterfield Street W1Grade II
- 140 m149 AND 150, OLD PARK LANE SW1 (See details for further address information)Grade II
- 141 mFormer Number 18Grade II
- 141 m9, Curzon Place W1Grade II
- 144 mBollard on South West Corner of Junction With Trebeck StreetGrade II
- 144 m105, Piccadilly W1Grade II
- 145 m134, PICCADILLY W1 (See details for further address information)Grade II
- 148 m4, Curzon SquareGrade II
- 149 m16a, Curzon Street W1Grade II
- 149 m7, Shepherd 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.
Sales history 1
Last sold for £14,500,000 in May 2025. Other property, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in March 2016, 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
- Listed Building Consent Application
- Postcode
- W1J 7RS
- Received
- 9 Sept 2026
- Validated
- 9 Sept 2026
- Ward
- West End
- Case officer
- Show
- Target decision
- 4 Nov 2026
- Decision
- Application Permitted
- Decision date
- 30 Sept 2026
- Decision level
- Delegated Decision
- Applicant
- Show
How this decision compares
Decided in 21 days from validation, 34 days faster 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.
Last counted 1 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15207735
- Planning Portal ref
- PP-15207735
- Env. assessment
- No
Historical activity at this location
28 previous applications on record - archival context, not part of the live application.
Previous applications at this address
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.
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.
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17 Hertford Street London W1J 7RS
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