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Planning application

17 Alexander Street London W2 5NT

Granted Westminster 25/08229/FULL Full Planning Permission Application

Works: Extension Roofing Windows or glazing

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

Proposal

Erection of rear extension at lower ground floor with terrace above, use of flat roof at second floor level as a terrace, alterations to windows and doors in association with works to the rear and to the lower ground front lightwell, roof alterations in association with photovoltaic panels and plant equipment; modifications to the front lightwell including replacement of the metal railings at ground floor and inclusion of a gate and landscaping works to the rear garden.

As published by the council, reference 25/08229/FULL

Application record

Reference
25/08229/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
11 Nov 2025
Validated
11 Nov 2025
Decided
5 Jun 2026
Ward
Bayswater
Decision by
Delegated Decision
Postcode
W2 5NT

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2020: 2 approved, 0 refused.

  • 26/05491/FULL Decided

    17 Alexander Street London W2 5NT

    Installation of air source heat pump unit within the rear garden and ancillary works.

    Submitted 12 Aug 2026 Full applications
  • 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)

    Decided 5 Aug 2026
  • 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

Timeline

Dates from the published record

  1. 11 Nov 2025

    Received by Westminster

  2. 5 Jun 2026

    Decision issued: Application Permitted

  3. 20 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 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)

    Decided 5 Aug 2026

Who's behind it

Company information only, from the register and Companies House

Atelier Gooch Ltd Agent, registered in London

Active · incorporated 2020 · London

10 applications on PlanIndex · across 5 councils

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

62 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 5 June 2026, 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 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
  • 18 Alexander Street London W2 5NT

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

    88% 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
  • 17 Alexander Street London W2 5NT

    26/05491/FULL Submitted 12 Aug 2026 50 yards away

    88% historically approved · decision due ~3 Nov

    Installation of air source heat pump unit within the rear garden and ancillary works.

    Decided Full applications
  • 18 Alexander Street London W2 5NT

    26/07066/TCA Submitted 15 Oct 2026 50 yards away

    100% historically approved · decision due ~10 Dec

    Elder (T1) - fell to ground level and grind out resulting stump. Replacement tree to be planted within a reconfigured planter during the landscape phase of the ongoing property renovations, to improve the relationship with trees in adjacent properties and maximise the likelihood of successful establishment.

    Awaiting decision Trees
  • 17 Alexander Street London W2 5NT

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

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

    Decided

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    Received 3 Aug, published by the council 28 Aug 2026 Full applications
  • 26/07521/FULL Awaiting decision

    Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

    Installation of one external condenser unit

    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL Awaiting decision

    Buckingham Palace The Mall London SW1A 1AA

    Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07472/FULL Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

    Received 3 Nov, published by the council 6 Nov 2026 Full applications