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Planning application

15A Devonshire Terrace London W2 3DW

Decided Westminster 26/03576/FULL Full applications

Works: Extension

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

As published by the council, reference 26/03576/FULL

Application record

Reference
26/03576/FULL
Category
Full applications
Status
Decided
Received
1 Jun 2026
Validated
17 Jul 2026
Decided
11 Sep 2026
Ward
Lancaster Gate
Postcode
W2 3DW

Timeline

Dates from the published record

  1. 1 Jun 2026

    Received by Westminster

  2. 17 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 11 Sep 2026

    Decision issued

  4. 11 Sep 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Mistry Wills Design Agent, a design practice registered in Gunnislake

Active · incorporated 2021 · Gunnislake

3 applications on PlanIndex · across 3 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

After the decision

Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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

  • 20 Devonshire Terrace London W2 3DW

    26/00925/LBC Submitted 13 Feb 2026 50 yards away

    90% historically approved · decision due ~30 Sep

    Installation of replacement boiler flue and replacement front door. (Part retrospective) (Linked to 26/00924/FULL)

    Decided Heritage and listed buildings

  • 20 Devonshire Terrace London W2 3DW

    26/00924/FULL Submitted 13 Feb 2026 50 yards away

    88% historically approved · decision due ~30 Sep

    Installation of replacement boiler flue and replacement front door. (part retrospective) (Linked to 26/00925/LBC)

    Decided Full applications

  • Flat 1 17 Devonshire Terrace London W2 3DW

    25/05958/CLLB Submitted 15 Aug 2025 50 yards away

    Internal cleaning and repairs to address water damage to affected walls and floors including removal and replacement of skirting boards and architrave; replacement of internal floor coverings with timber plank floor covering and ceramic floor tiles; works to internal solid walls to remove and replace ceramic wall tiles from en-suite bathroom; and redecorate walls, ceilings, joinery and pipework.

    Granted 11 docs

  • 29 Upbrook Mews London W2 3HG

    25/05193/ADFULL Submitted 25 Jul 2025 50 yards away

    Details of a sample of the obscure glazing, detailed drawings of the privacy screen at roof level and details of a sample of the slate used to clad the front and rear roof slopes must be natural grey slate pursuant to condition 5,6 and 7 of planning permission dated 24th June 2024 (RN:25/02311/FULL)

    Granted Full applications Windows or glazing 11 docs

  • 10 Upbrook Mews London W2 3HG

    26/04351/ADFULL Submitted 1 Jul 2026 50 yards away

    89% historically approved · decision due ~26 Aug

    Details of sample of the obscure glazing pursuant to condition 5 of planning permission dated 18 April 2023 (RN: 22/07278/FULL)

    Decided Windows or glazing

  • 10 Upbrook Mews London W2 3HG

    26/05590/ADFULL Submitted 17 Aug 2026 50 yards away

    Details of a sample of the obscure glazing pursuant to condition 5 of planning permission dated 18.04.2023 (RN:22/07278/FULL)

    Granted Windows or glazing

In Westminster

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    Received 30 Oct, published by the council 3 Nov 2026 Full applications
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  • 26/06015/FULL Decided

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    Received 3 Sep, published by the council 11 Sep 2026 Full applications
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    Received 28 Oct, published by the council 2 Nov 2026 Full applications