10 Crystal Glen Llanishen Cardiff CF14 5QH

1. 21 Jul 2009

   Received by Cardiff

2. 22 Jul 2009

   Validated

   Checked as complete and ready for consideration.

3. 22 Jul 2009

   Decision issued: Not Permitted Development

4. 6 Oct 2026

   Added to PlanIndex

Cardiff refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 9 Crystal Glen Llanishen Cardiff CF14 5QH

  24/02401/HSE Submitted 9 Oct 2024 50 yards away

  Side porch covering to existing entrance.

  Granted Householder Extension 9 docs
  Small domestic

• 4 Crystal Glen Llanishen Cardiff CF14 5QH

  20/01571/DCH Submitted 11 Aug 2020 50 yards away

  SINGLE STOREY REAR EXTENSION, DORMER LOFT EXTENSION, NEW ROOF TO EXISTING GARAGE AND ALTERATIONS TO EXISTING PORCH

  Granted Householder Extension Loft or dormer +1 14 docs
  Small domestic

• 4 Crystal Glen Llanishen Cardiff CF14 5QH

  25/00547/VAR Submitted 5 Mar 2025 50 yards away

  Single storey rear extension, dormer loft extension, new roof to existing garage and alterations to existing porch (Approved 4 June 2025- 20/01571/DCH):- Variation of Condition 2 (Approved Plans) of 20/01571/DCH to amend the approved scheme as follows: 1) Simplify extension roof build; 2) Provide a covered, decked area outside the extension

  Refused Amendments Extension Loft or dormer +1 5 docs
  Small domestic

• 22B Crystal Wood Road Heath Cardiff CF14 4HW

  26/00206/WTTPP Submitted 2 Feb 2026 50 yards away

  Trees 1-5: remove and shape the canopy to a retained height of 10 metres, removing branch tips back to alternative growing points leaving as natural a form as possible. There are 5 purple beech trees to the western boundary of the above property.

  Granted Trees 4 docs

• 1 Crystal Rise Heath Cardiff CF14 4HP

  21/01262/DCH Submitted 18 May 2021 150 yards away

  DEMOLITION OF EXISTING EXTENSIONS AND CONSTRUCTION OF SINGLE STOREY REAR EXTENSION

  Granted Householder Extension Demolition 18 docs
  Small domestic

• 39 Crystal Avenue Heath Cardiff CF23 5QL

  25/02979/CLPUD Submitted 19 Dec 2025 150 yards away

  Single storey rear and side extension.

  Granted Lawful development Extension 5 docs
  Small domestic

• 26/01777/PRAP Granted

  Tredegarville Primary School Caretakers House Newport Road Lane Adamsdown Cardiff CF24 0JT

  Demolition of two-storey Caretakers house.

  Received 17 Aug, published by the council 29 Aug 2026 Prior approval
• 26/01714/PRAP Refused

  Land At The Big Yellow Storage Company 65 Penarth Road Butetown Cardiff CF10 5DL

  Monopole and equipment cabinets to be installed

  Received 11 Aug, published by the council 24 Aug 2026 Prior approval
• 26/02037/PRAP Awaiting decision

  GRASS VERGE OFF DE CLARE DRIVE, RADYR, RADYR AND MORGANSTOWN, CARDIFF, CF15 8AA

  Proposed installation of a 17.5m high monopole accommodating 6No antennas, 1No transmission dish and ancillary development. The proposal also involves the installation of 2No cabinets and 1No meter cabinet and ancillary equipment thereto.

  Received 24 Sep, published by the council 1 Oct 2026 Prior approval
• 26/01678/PRAP Granted

  Welsh Water Radyr Res. Olo Site Restways Close Fairwater Cardiff CF5 2SE

  Removal of 1 no. equipment cabinet and installation of 1 no. generator cabin, 2 no. equipment cabinet and ancillary works thereto

  Received 6 Aug, published by the council 24 Aug 2026 Prior approval
• 26/01659/PRAP Decided

  Land North Of The M4 Pantmawr Rhiwbina Cardiff CF14 9UG

  24/7 telecommunications cell site

  Received 5 Aug, published by the council 17 Aug 2026 Prior approval