17 Alexander Street London W2 5NT

This site has had 4 applications since 2020: 1 approved, 0 refused.

• 26/05150/ADFULL Decided

  17 Alexander Street London W2 5NT

  Details of new railings pursuant to condition 6 of planning permission dated 04 June 2026 (RN: 25/08229/FULL)

  Submitted 30 Jul 2026
• 25/08229/FULL Awaiting decision

  17 Alexander Street London W2 5NT

  Full width rear extension at lower ground floor; full height double glazed door and a new window across the lower ground floor elevation; new balcony spanning the width of the property at raised ground floor level at the rear, with a new stair from balcony to garden level; new glazed door within the closet wing rear elevation at raised ground floor; new glazed door to the terrace from the house at raised ground floor; new timber sash window within the closet wing; new railing and glazed door above closet wing at first floor - second floor half landing level; modifications to the mansard roof to accommodate photovoltaic panels and plant equipment; modifications to the front lightwell including replacement of the metal railings at ground floor and inclusion of a gate; new period detailed doors and windows to the lower ground front lightwell; and landscaping works to the rear garden.

  Submitted 11 Nov 2025 Full applications
• 20/08026/TCA Granted

  17 Alexander Street London W2 5NT

  T1 Cherry: crown reduce by 25%. Remove decayed branch over driveway.

  Decided 21 Dec 2020 Trees

1. 12 Aug 2026

   Received by Westminster

2. 8 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 11 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 3 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Westminster took a median of 65 days over the applications it decided in the last year.

This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 91 days. More in our guide to how long planning decisions take.

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.

• 17 Alexander Street London W2 5NT

  26/05150/ADFULL Submitted 30 Jul 2026 50 yards away

  89% historically approved · decision due ~24 Sep

  Details of new railings pursuant to condition 6 of planning permission dated 04 June 2026 (RN: 25/08229/FULL)

  Decided

• 17 Alexander Street London W2 5NT

  20/08026/TCA Submitted 16 Dec 2020 50 yards away

  T1 Cherry: crown reduce by 25%. Remove decayed branch over driveway.

  Granted Trees 2 docs

• 17 Alexander Street London W2 5NT

  25/08229/FULL Submitted 11 Nov 2025 50 yards away

  87% historically approved · decision due ~6 Jan

  Full width rear extension at lower ground floor; full height double glazed door and a new window across the lower ground floor elevation; new balcony spanning the width of the property at raised ground floor level at the rear, with a new stair from balcony to garden level; new glazed door within the closet wing rear elevation at raised ground floor; new glazed door to the terrace from the house at raised ground floor; new timber sash window within the closet wing; new railing and glazed door above closet wing at first floor - second floor half landing level; modifications to the mansard roof to accommodate photovoltaic panels and plant equipment; modifications to the front lightwell including replacement of the metal railings at ground floor and inclusion of a gate; new period detailed doors and windows to the lower ground front lightwell; and landscaping works to the rear garden.

  Awaiting decision Full applications Extension Loft or dormer +1 47 docs

• 18 Alexander Street London W2 5NT

  25/09034/FULL Submitted 12 Dec 2025 50 yards away

  87% historically approved · decision due ~6 Feb

  Variation of condition 1 of planning permission dated 7th August 2025 (RN: 25/03483/FULL) for the Lower ground floor rear extension, ground floor glazed infill extension adjacent to the closet wing, with balcony and new staircase from balcony to garden level; closet wing extended vertically to create an additional storey, new sash windows to closet wing and replacement of dormer window with doors to rear mansard roof. Namely, Removal of the central masonry pier introduced during the determination of the original application

  Awaiting decision Full applications Extension Loft or dormer +1 11 docs

• 18 Alexander Street London W2 5NT

  26/00025/FULL Submitted 5 Jan 2026 50 yards away

  Installation of 6no photovoltaic panels and an acoustic enclosure housing 2no condenser units on the roof.

  Refused Full applications 21 docs

• 29 Alexander Street London W2 5NU

  25/06962/P3JPA Submitted 29 Sep 2025 50 yards away

  Notification for Prior Approval for the change of use from a Class E commercial, business and service use to a residential dwelling at 29 Alexander Street under the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) Schedule 2, Part 3, Class MA.

  Granted Prior approval 17 docs
  Domestic

• 26/06295/FULL Awaiting decision

  15 Warwick Way London SW1V 1QT

  Installation of a new shopfront.

  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 repolacement window and installation of double opening door.

  Received 15 Sep, published by the council 17 Sep 2026 Full applications
• 26/06287/FULL Awaiting decision

  Barness Court 6 - 8 Westbourne Terrace London W2 3UW

  Installation of a new riser as per GW10 design comprising a single riser with 7 entries and 9 Taylor valves to be installed. (Linked with 26/06288/LBC)

  Received 14 Sep, published by the council 21 Sep 2026 Full applications
• 26/06278/FULL Awaiting decision

  40 Wellington Road London NW8 9TJ

  Installation of a new external access ramp/slope to provide accessibility to the Barclays bank ATM.

  Received 14 Sep, published by the council 21 Sep 2026 Full applications
• 26/06269/FULL Awaiting decision

  Maisonette Basement And Ground Floor 101 Hereford Road London W2 5BB

  Amalgamation of existing lower ground and ground floor maisonette with the first floor flat to create a single dwelling and associated internal works including creation of a staircase. (Linked with 26/06270/LBC)

  Received 14 Sep, published by the council 21 Sep 2026 Full applications