80 Monthermer Road Cathays Cardiff CF24 4QY

This site has had 3 applications since 2025: 1 approved, 0 refused.

• 25/01030/FUL Withdrawn

  80 Monthermer Road Cathays Cardiff CF24 4QY

  Conversion of existing class C4 HMO to large sui generis house in multiple-occupation with ground floor rear extension and dormer loft conversions

  Decided 9 Dec 2025 Full applications
• 25/00683/FUL Granted

  80 Monthermer Road Cathays Cardiff CF24 4QY

  Conversion to four flats with rear ground floor extension and rear dormer loft conversion.

  Decided 10 Sep 2025 Full applications

1. 25 Sep 2025

   Received by Cardiff

2. 22 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 20 November 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Cardiff took a median of 56 days over the applications it decided in the last year.

This application is with Cardiff for determination, against a statutory target of eight weeks. Over the last year Cardiff decided lawful development applications in a median of 22 days. More in our guide to how long planning decisions take.

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.

• 80 Monthermer Road Cathays Cardiff CF24 4QY

  25/00683/FUL Submitted 19 Mar 2025 0m away

  Conversion to four flats with rear ground floor extension and rear dormer loft conversion.

  Granted Full applications New dwelling Extension +1 12 docs
  Several homes

• 80 Monthermer Road Cathays Cardiff CF24 4QY

  25/01030/FUL Submitted 6 May 2025 0m away

  Conversion of existing class C4 HMO to large sui generis house in multiple-occupation with ground floor rear extension and dormer loft conversions

  Withdrawn Full applications Extension Loft or dormer 9 docs

• 66 Monthermer Road Cathays Cardiff CF24 4QY

  26/01510/FUL Submitted 21 Jul 2026 37m away

  91% historically approved · decision due ~15 Sep

  Alterations and extensions to 8-bed HMO to form 4 x 1-bed apartments and 1 studio

  Awaiting decision Full applications New dwelling Extension 7 docs

• 112 Tewkesbury Street Cathays Cardiff CF24 4QS

  22/03049/CLD Submitted 21 Dec 2022 65m away

  Rear Dormer Roof Extension and Rear Single Storey Extension

  Granted Lawful development Extension Loft or dormer 6 docs
  Small domestic

• 136 Tewkesbury Street Cathays Cardiff CF24 4QS

  26/01010/FUL Submitted 18 May 2026 82m away

  Conversion to class C4 HMO with ground floor rear/side extension.

  Refused Full applications Extension 9 docs

• Overbridge Monthermer Road Cathays Cardiff

  22/02725/PRAP Submitted 11 Nov 2022 96m away

  To extend the existing parapet by approximately 70mm on both sides of the bridge.

  Withdrawn Prior approval 5 docs

• 26/01775/CLEUD Granted

  62 Cottrell Road Roath Cardiff CF24 3EZ

  Use of the property as 2 residential care flats (Class C2).

  20 Aug 2026 Lawful development
• 26/01773/CLEUD Granted

  32 Connaught Road Roath Cardiff

  Use of the property as 5 residential care flats (Class C2).

  20 Aug 2026 Lawful development
• 26/01774/CLEUD Granted

  57 Connaught Road Roath Cardiff CF24 3PW

  Use of the property as 4 residential care flats (Class C2).

  20 Aug 2026 Lawful development
• 26/01883/CLPUD Awaiting decision

  Heathfield 135 Pantbach Road Heath Cardiff CF14 1TY

  Proposed enlargement of the existing single-storey rear extension and removal of the existing flat roof and construction of a pitched roof over the enlarged extension with associtated works

  8 Sep 2026 Lawful development
• 26/01990/CLEUD Awaiting decision

  5 Talworth Street Roath Cardiff CF24 3EH

  Use of the property as a C4 House in Multiple Occupation (HMO).

  8 Sep 2026 Lawful development