20 James Street Butetown Cardiff CF10 5EX

1. 27 Aug 2025

   Received by Cardiff

2. 21 Nov 2025

   Decision issued: Permission Granted

3. 22 Jul 2026

   Added to PlanIndex

Cardiff granted permission on 21 November 2025, subject to any conditions on the decision notice. Work must normally begin within five years or the permission lapses. More in our guide to what happens after a planning decision.

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.

• 1 Mount Stuart Arcade Mount Stuart Square Butetown Cardiff CF10 5EE

  26/00529/LBC Submitted 16 Mar 2026 50 yards away

  97% historically approved · decision due ~11 May

  Conversion of existing commercial space into a two bedroom dwelling. Alterations to the existing shop front and first floor windows.

  Awaiting decision Heritage and listed buildings Windows or glazing 9 docs
  Domestic

• 1 Mount Stuart Arcade Mount Stuart Square Butetown Cardiff CF10 5EE

  26/00528/FUL Submitted 16 Mar 2026 50 yards away

  90% historically approved · decision due ~11 May

  Conversion of existing commercial space into a two bedroom dwelling. Alterations to the existing shop front and first floor windows.

  Awaiting decision Full applications Windows or glazing 11 docs
  Domestic

• 16 Mount Stuart Square Butetown Cardiff CF10 5DP

  26/00018/FUL Submitted 7 Jan 2026 50 yards away

  Change of Use of the Second and Third floors from Office (B1) Use to a Dwelling (C3) Use. External works to include the addition of a window to the front elevation, new canopy to the entrance, and roof pitch alterations.

  Refused Full applications Windows or glazing 9 docs
  Domestic

• Louisa Place Butetown Cardiff CF10 5BY

  23/00156/DOC Submitted 23 Jan 2023 50 yards away

  Discharge of conditions 2 (Ecological Enhancement) and 3 (Proposed Boundary treatment on James Street) of 22/02348/FUL

  Granted Conditions 9 docs

• Bay Chambers West Bute Street Butetown Cardiff CF10 5BB

  21/00580/MJR Submitted 8 Mar 2021 50 yards away

  DISCHARGE OF CONDITION 14 (FOUL DRAINAGE SCHEME) OF 17/00699/MJR

  Granted Conditions 6 docs

• Unit 2 3 - 11 West Bute Street Butetown Cardiff CF10 5EN

  26/00486/FUL Submitted 11 Mar 2026 50 yards away

  Change of use from class A1 to D1.

  Granted Full applications 7 docs

• 26/01337/FUL Granted

  37 Wyeverne Road Cathays Cardiff CF24 4BG

  Extensions and alterations and change of use from dwelling (C3) to House in Multiple Occupation (C4) (HMO).

  Received 26 Jun, published by the council 22 Jul 2026 Full applications
• 26/01728/FUL Granted

  Unit 7b Cardiff Industrial Park Pennine Close Llanishen Cardiff CF14 5DN

  Installation of 5 no. external air source heat pump units

  Received 13 Aug, published by the council 24 Aug 2026 Full applications
• 26/01729/FUL Granted

  Unit 7b Cardiff Industrial Park Pennine Close Llanishen Cardiff CF14 5DN

  Replacement roller shutter.

  Received 13 Aug, published by the council 24 Aug 2026 Full applications
• 26/01216/FUL Granted

  4 Callaghan Square Butetown Cardiff CF10 5BT

  Internal and external alterations to an existing office building at ground floor and part first floor

  Received 12 Jun, published by the council 22 Jul 2026 Full applications
• 26/02099/FUL Awaiting decision

  20 Janet Street Splott Cardiff CF24 2BD

  Proposed conversion of dwelling to form two flats

  Received 5 Oct, published by the council 9 Oct 2026 Full applications