80 Monthermer Road Cathays Cardiff CF24 4QY

This site has had 3 applications since 2025: 2 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• 25/01030/FUL Withdrawn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 Oct 2025

   Decision issued: Permission Granted

3. 22 Jul 2026

   Added to PlanIndex

Cardiff granted permission on 22 October 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 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 50 yards 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 50 yards 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  Withdrawn Full applications Extension Loft or dormer 9 docs

• 74 Monthermer Road Cathays Cardiff CF24 4QY

  21/01363/MNR Submitted 26 May 2021 50 yards away

  CONVERSION TO 4 FLATS WITH GROUND FLOOR REAR AND SIDE EXTENSIONS AND DORMER ROOF EXTENSION

  Granted Full applications New dwelling Extension +1 13 docs
  Several homes

• 66 Monthermer Road Cathays Cardiff CF24 4QY

  26/01510/FUL Submitted 21 Jul 2026 50 yards away

  90% 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

• 90 Monthermer Road Cathays Cardiff CF24 4QY

  20/01472/MNR Submitted 29 Jul 2020 50 yards away

  CONVERSION TO TWO FLATS WITH GROUND FLOOR REAR EXTENSION

  Granted Full applications New dwelling Extension 14 docs
  Several homes

• 99 Monthermer Road Cathays Cardiff CF24 4QY

  23/02854/HSE Submitted 5 Dec 2023 50 yards away

  Rear and side ground floor extension and rear dormer extension.

  Granted Householder Extension Loft or dormer 7 docs
  Domestic

• 26/01578/CLPUD Granted

  207 Fidlas Road Llanishen Cardiff CF14 5NA

  Proposed ancillary garden building

  Received 28 Jul, published by the council 6 Oct 2026 Lawful development
• 26/02084/CLPUD Awaiting decision

  24 Bassetts Field Rhiwbina Cardiff CF14 9UG

  Proposed single storey flat roof extension to rear

  Received 2 Oct, published by the council 6 Oct 2026 Lawful development
• 26/02050/CLPUD Awaiting decision

  First And Second Floor 85 Romilly Crescent Pontcanna Cardiff CF11 9NQ

  Change of use from Residential to C6 short-term let.

  Received 25 Sep, published by the council 6 Oct 2026 Lawful development
• 26/02053/CLPUD Awaiting decision

  32 Homelands Road Heath Cardiff CF14 1UJ

  Single storey rear extension.

  Received 24 Sep, published by the council 6 Oct 2026 Lawful development
• 26/01863/CLPUD Granted

  6 Llandennis Green Cyncoed Cardiff CF23 6JX

  Proposed conversion of existing integral garage to ancillary domestic accommodation, including minor internal alterations

  Received 4 Sep, published by the council 22 Sep 2026 Lawful development