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Planning application

18 Lisson Grove London NW1 6TT

Awaiting decision Westminster 26/01653/FULL Full Planning Permission Application

Works: New dwelling Extension

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Erection of a extension, conversion and refurbishment of the site to deliver three new residential units; together with the extension and improvement of the existing apartments, external alterations, and the utilisation of the ground floor office space to provide a single commercial unit (Class E).

As published by the council, reference 26/01653/FULL

Application record

Reference
26/01653/FULL
Type
Full Planning Permission Application
Status
Pending
Received
13 Mar 2026
Validated
13 Mar 2026
Ward
Regent's Park
Postcode
NW1 6TT

Timeline

Dates from the published record

  1. 13 Mar 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 8 May 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 66 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Simply Planning Limited Agent, a planning consultancy registered in Belfast

Active · incorporated 2011 · Belfast

198 applications on PlanIndex · across 53 councils · 84% granted

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

23 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 happens while it is decided

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.

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

  • 24 Lisson Grove London NW1 6TT

    21/08179/FULL Submitted 30 Nov 2021 50 yards away

    87% historically approved · decision due ~10 Feb

    Erection of ground and first floor rear extension to form a two-bedroom self-contained flat, conversion of the existing ground floor office to a one-bedroom self-contained flat, and office to basement.

    Awaiting decision Full applications Extension 16 docs

  • Development Site At 26 To 46 Lisson Grove And 18 Hayes Place London

    25/08588/CLEUD Submitted 24 Nov 2025 50 yards away

    Confirmation that material operations were undertaken in order to lawfully implement planning permission referenced 22/05145/FULL, dated 06 January 2023, for the purpose of Section 56 of the Town and Country Planning Act (1990) (as amended) prior to the expiry of this permission at the end of 6 January 2026.

    Granted Lawful development 22 docs

  • Florence Nightingale Hospital 11 - 19 Lisson Grove London NW1 6SH

    04/01784/FULL Submitted 8 Mar 2004 50 yards away

    Replacement of UPVC windows to 11 first floor windows on the Bendall Mews elevation.

    Granted Full applications Windows or glazing 7 docs

  • Florence Nightingale Hospital 11 - 19 Lisson Grove London NW1 6SH

    03/08978/FULL Submitted 21 Nov 2003 50 yards away

    Replacement UPVC windows to eleven first floor existing windows of Bendall Mews elevation.

    Refused Full applications Windows or glazing 7 docs

  • Second Floor Flat 109 Bell Street London NW1 6TL

    25/09282/FULL Submitted 22 Dec 2025 50 yards away

    87% historically approved · decision due ~18 May

    Erection of additional storey to existing second floor flat, conversion of 1 flat into a 3-bed duplex with front elevation dormer windows set back from principal elevation.

    Awaiting decision Full applications Loft or dormer Windows or glazing 14 docs
    Domestic

  • 7 Harewood Avenue London NW1 6JB

    26/05210/ADV Submitted 3 Aug 2026 50 yards away

    84% historically approved · decision due ~28 Sep

    Display of 28 non illuminated window vinyl to ground floor windows of building measuring 1.25m X 2.68m

    Awaiting decision Advertising Windows or glazing

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