23 Siward Street York YO10 3LW

1. 6 Oct 2025

   Received by York

2. 16 Oct 2025

   Validated

   Checked as complete and ready for consideration.

3. 10 Dec 2025

   Decision issued: Grant

4. 20 Jul 2026

   Added to PlanIndex

York granted permission on 10 December 2025, 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.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 27 Siward Street York YO10 3LW

  24/01978/CPD Submitted 30 Oct 2024 50 yards away

  Certificate of lawfulness for proposed development of a dormer to rear and single storey rear extension

  Granted Lawful development Extension Loft or dormer 6 docs
  Small domestic

• 15 Siward Street York YO10 3LW

  21/02245/CLU Submitted 4 Oct 2021 50 yards away

  Certificate of lawfulness for use as a House in Multiple Occupation (use class C4)

  Granted Lawful development 5 docs

• 8 Lamel Street York YO10 3LL

  26/01529/CLU Submitted 18 Aug 2026 50 yards away

  89% historically approved · decision due ~13 Oct

  Certificate of lawfulness for use as House in Multiple Occupation for up to 3no. occupants (use class C4)

  Decided Lawful development

• 5 Siward Street York YO10 3LW

  21/02430/CLU Submitted 29 Oct 2021 50 yards away

  Certificate of lawfulness for use of dwelling as house in multiple occupation (use class C4)

  Granted Lawful development 3 docs
  Domestic

• 6 Siward Street York YO10 3LW

  22/01114/FUL Submitted 30 May 2022 50 yards away

  Change of use of single dwelling (use class C3) to small house in multiple occupation (use class C4)

  Refused Full applications 5 docs
  Domestic

• 4 Siward Street York YO10 3LW

  23/00102/CLU Submitted 16 Jan 2023 50 yards away

  Certificate of lawfulness for use as House in Multiple Occupation (use class C4)

  Granted Lawful development 5 docs

• 26/01741/CLU Awaiting decision

  Paul Stride 20 Kathryn Avenue Huntington York YO32 9JS

  Certificate of lawfulness for the use that the commercial unit falls under Class E

  Lawful development
• 26/01892/CLU Awaiting decision

  23 Cosmo Avenue York YO31 0SU

  Certificate of lawfulnes for use as a house in multiple occupation with up to 6 occupants (C4)

  Lawful development
• 26/01804/CLU Awaiting decision

  25 Temple Avenue York YO10 3RS

  Certificate of lawfulness for use as House in Multiple Occupation (use class C4) for up to 6no. occupants

  Lawful development
• 26/01790/CLU Awaiting decision

  99 Thief Lane York YO10 3HT

  Certificate of lawfulness for use as House in Multiple Occupation (use class C4) for up to 6no. occupants

  Received 2 Oct, published by the council 11 Oct 2026 Lawful development
• 26/01748/CLU Awaiting decision

  89 Moor Lane Acomb York YO24 2QX

  Certificate of lawfulness for the use of land to the south and west of dwelling for domestic and recreational purposes (use Class C3)

  Lawful development