3 Treherbert Street Cathays Cardiff CF24 4JN

1. 21 Dec 2022

   Received by Cardiff

2. 10 Jan 2023

   Validated

   Checked as complete and ready for consideration.

3. 15 May 2023

   Decision issued: Permission Granted

4. 22 Sep 2026

   Added to PlanIndex

Cardiff granted permission on 15 May 2023, 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.

• 19 Treherbert Street Cathays Cardiff CF24 4JN

  26/01363/CLEUD Submitted 1 Jul 2026 50 yards away

  Use of the property as a Sui Generis House in Multiple Occupation (HMO).

  Granted Lawful development 5 docs

• 17 Treorky Street Cathays Cardiff CF24 4JP

  25/02997/HSE Submitted 29 Dec 2025 50 yards away

  Rear extension and dormer loft conversion.

  Granted Householder Extension Loft or dormer 7 docs
  Domestic

• 12 Merthyr Street Cathays Cardiff CF24 4JJ

  23/00046/CLD Submitted 9 Jan 2023 100 yards away

  GROUND FLOOR REAR EXTENSION AND DORMER LOFT CONVERSION TO EXISTING CLASS C4 HOUSE IN MULTIPLE OCCUPATION

  Granted Lawful development Extension Loft or dormer 7 docs

• 6B Merthyr Street Cathays Cardiff CF24 4JJ

  26/00978/CLEUD Submitted 11 May 2026 100 yards away

  Use of the property as two self-contained flats.

  Granted Lawful development New dwelling 10 docs

• 15 Hirwain Street Cathays Cardiff CF24 4JG

  20/01911/DCH Submitted 24 Sep 2020 100 yards away

  REAR SINGLE STOREY EXTENSION

  Granted Householder Extension 6 docs
  Small domestic

• 103 Cathays Terrace Cathays Cardiff CF24 4XQ

  20/00136/MNR Submitted 21 Jan 2020 100 yards away

  DISCHARGE OF CONDITIONS 5 (SOUND INSULATION) AND 8 (EXTRACTION DETAILS) OF 19/02219/MNR

  Withdrawn Conditions 7 docs

• 26/01959/FUL Awaiting decision

  175 City Road Roath Cardiff CF24 3JB

  Retrospective application for alterations to the existing covered external seating area, comprising side panels, glazing, stall risers and an entrance door.

  Received 16 Sep, published by the council 22 Sep 2026 Full applications
• 26/01531/FUL Granted

  60 Colum Road Cathays Cardiff CF10 3EH

  Dormer Loft Conversion plus related alterations to convert existing class C4 HMO into a large sui generis HMO.

  Received 23 Jul, published by the council 6 Aug 2026 Full applications
• 26/01537/FUL Granted

  Part Ground Floor And First Floor 55 Whitchurch Road Gabalfa Cardiff CF14 3JP

  Change of use of existing offices to living accomodation

  Received 23 Jul, published by the council 6 Aug 2026 Full applications
• 26/01534/FUL Granted

  23 Gordon Road Roath Cardiff CF24 3AL

  Retention of conversion from a large sui generis HMO to a class C4 HMO.

  Received 23 Jul, published by the council 6 Aug 2026 Full applications
• 26/01641/FUL Granted

  64 St Mary Street Cathays Cardiff CF10 1FA

  Replacement of the existing condensers and Installation of additional 4 no. new condensers within the external yard

  Received 3 Aug, published by the council 13 Aug 2026 Full applications