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Planning application

17 Hertford Street London W1J 7RS

Granted Westminster 07/01339/FULL Application for full Planning Permission

Works: Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Installation of nine air-conditioning units at roof level and replacement of roof access enclosure and rooflight.

As published by the council, reference 07/01339/FULL

Application record

Reference
07/01339/FULL
Type
Application for full Planning Permission
Status
Decided
Decision
Granted As published: Application Permitted
Received
12 Feb 2007
Validated
14 May 2007
Decided
3 Jul 2008
Ward
West End
Decision by
Delegated Decision
Postcode
W1J 7RS

Site history

Applications at this address on the Westminster register

This site has had 11 applications since 2007: 2 approved, 0 refused.

  • 26/06165/LBC Awaiting decision

    17 Hertford Street London W1J 7RS

    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.

    Submitted 9 Sep 2026 Heritage and listed buildings
  • 26/03409/FULL Awaiting decision

    17 Hertford Street London W1J 7RS

    Replacement of the mansard infill extension to the south east of the property by extending the existing bay upwards by a single storey (3-storeys total) and associated roof works to improve the internal space. (Linked with 26/03410/LBC)

    Submitted 22 May 2026 Full applications
  • 26/03484/ADLBC Awaiting decision

    17 Hertford Street London W1J 7RS

    Details of all new windows / reduction in size of dormer windows / facing materials pursuant to conditions 4, 5 and 7 of listed building consent dated 13 February 2025 (RN: 24/03932/LBC) [Linked to 26/03406/ADFULL]

    Submitted 22 May 2026 Conditions
  • 26/03410/LBC Awaiting decision

    17 Hertford Street London W1J 7RS

    Replacement of the mansard infill extension to the south east of the property by extending the existing bay upwards by a single storey (3-storeys total) and associated roof works to improve the internal space. (Linked with 26/03409/FULL)

    Submitted 22 May 2026 Heritage and listed buildings
  • 26/03406/ADFULL Awaiting decision

    17 Hertford Street London W1J 7RS

    Details of all new windows / reduction in size of dormer windows / facing materials pursuant to conditions 4, 5 and 6 of planning permission dated 13 February 2025 (RN: 24/03931/FULL) [Linked to 26/03484/ADLBC]

    Submitted 22 May 2026 Full applications
  • 26/02817/FULL Awaiting decision

    17 Hertford Street London W1J 7RS

    Replacement of non-original casement windows at Level 03 with timber sash windows; new structure for mansard extension, infill of existing lightwell and repositioning of skylight above stairwell. [Linked to 26/02818/LBC]

    Submitted 28 Apr 2026 Full applications
  • 26/02818/LBC Awaiting decision

    17 Hertford Street London W1J 7RS

    Replacement of non-original casement windows at Level 03 with timber sash windows; new structure for mansard extension, infill of existing lightwell and repositioning of skylight above stairwell. [Linked to 26/02817/FULL]

    Submitted 28 Apr 2026 Heritage and listed buildings
  • 25/07827/FULL Awaiting decision

    17 Hertford Street London W1J 7RS

    Internal restoration, redecoration and minor reconfigurations associated with the implementation of planning permission (24-03931-FULL) and listed building permission (24-03932-LBC); addition of a fourth-floor mansard roof to allow for the creation of a one-bedroom apartment for short term letting purposes; replacement of existing windows at third floor level with traditional timber sashes and other associated works. (Linked 25/07828/LBC)

    Submitted 29 Oct 2025 Full applications
  • 25/07828/LBC Awaiting decision

    17 Hertford Street London W1J 7RS

    Addition of a fourth-floor mansard roof to allow for the creation of a one-bedroom apartment for short term letting purposes, replacement of windows at third floor level, internal and external restoration, redecoration and minor reconfigurations and other associated works. (Linked with 25/07827/FULL)

    Submitted 29 Oct 2025 Heritage and listed buildings
  • 07/01340/LBC Granted

    17 Hertford Street London W1J 7RS

    Installation of nine air-conditioning units at roof level and replacement of roof access enclosure and rooflight; installation of associated internal units and pipework.

    Decided 3 Jul 2008 Heritage and listed buildings

Timeline

Dates from the published record

  1. 12 Feb 2007

    Received by Westminster

  2. 14 May 2007

    Validated

    Checked as complete and ready for consideration.

  3. 3 Jul 2008

    Decision issued: Application Permitted

  4. 29 Jul 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

14 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Westminster granted permission on 3 July 2008, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 17 Hertford Street London W1J 7RS

    07/01340/LBC Submitted 12 Feb 2007 50 yards away

    Installation of nine air-conditioning units at roof level and replacement of roof access enclosure and rooflight; installation of associated internal units and pipework.

    Granted Heritage and listed buildings Loft or dormer 2 docs

  • 17 Hertford Street London W1J 7RS

    26/03484/ADLBC Submitted 22 May 2026 50 yards away

    90% historically approved · decision due ~3 Aug

    Details of all new windows / reduction in size of dormer windows / facing materials pursuant to conditions 4, 5 and 7 of listed building consent dated 13 February 2025 (RN: 24/03932/LBC) [Linked to 26/03406/ADFULL]

    Awaiting decision Conditions Loft or dormer Windows or glazing 8 docs

  • 17 Hertford Street London W1J 7RS

    26/03406/ADFULL Submitted 22 May 2026 50 yards away

    87% historically approved · decision due ~3 Aug

    Details of all new windows / reduction in size of dormer windows / facing materials pursuant to conditions 4, 5 and 6 of planning permission dated 13 February 2025 (RN: 24/03931/FULL) [Linked to 26/03484/ADLBC]

    Awaiting decision Full applications Loft or dormer Windows or glazing 8 docs

  • 17 Hertford Street London W1J 7RS

    26/06165/LBC Submitted 9 Sep 2026 50 yards away

    90% historically approved · decision due ~4 Nov

    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.

    Awaiting decision Heritage and listed buildings

  • 17 Hertford Street London W1J 7RS

    25/07827/FULL Submitted 29 Oct 2025 50 yards away

    87% historically approved · decision due ~1 Jan

    Internal restoration, redecoration and minor reconfigurations associated with the implementation of planning permission (24-03931-FULL) and listed building permission (24-03932-LBC); addition of a fourth-floor mansard roof to allow for the creation of a one-bedroom apartment for short term letting purposes; replacement of existing windows at third floor level with traditional timber sashes and other associated works. (Linked 25/07828/LBC)

    Awaiting decision Full applications Loft or dormer Windows or glazing 31 docs

  • 17 Hertford Street London W1J 7RS

    25/07828/LBC Submitted 29 Oct 2025 50 yards away

    90% historically approved · decision due ~1 Jan

    Addition of a fourth-floor mansard roof to allow for the creation of a one-bedroom apartment for short term letting purposes, replacement of windows at third floor level, internal and external restoration, redecoration and minor reconfigurations and other associated works. (Linked with 25/07827/FULL)

    Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing 32 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront with Medication Dispensing Outlet.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising replacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06294/FULL Awaiting decision

    15 Eaton Mews South London SW1W 9HP

    Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06317/FULL Awaiting decision

    124 Hamilton Terrace London NW8 9UT

    Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06318/LBC)

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06273/FULL Awaiting decision

    9A Grosvenor Square London W1K 5AE

    Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

    Received 14 Sep, published by the council 22 Sep 2026 Full applications