11 Llyn Close Cyncoed Cardiff CF23 6LG

1. 10 Jan 2023

   Received by Cardiff

2. 18 Jan 2023

   Validated

   Checked as complete and ready for consideration.

3. 13 Mar 2023

   Decision issued: Permission Granted

4. 17 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within five years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 83 Ogwen Drive Lakeside Cardiff CF23 6LJ

  21/01346/DCH Submitted 26 May 2021 41m away

  REMOVAL OF EXISTING GARAGE AND CONSTRUCTION OF SINGLE STOREY SIDE EXTENSION WITH PORCH EXTENSION

  Granted Householder Extension 5 docs
  Small domestic

• 42 Pennant Crescent Cyncoed Cardiff CF23 6LN

  26/01345/HSE Submitted 29 Jun 2026 109m away

  Erection of a double storey rear extension with a conversion to existing garage and porch addition.

  Withdrawn Householder Extension 12 docs
  Small domestic

• 34 Duffryn Avenue Lakeside Cardiff CF23 6LF

  21/01066/DCH Submitted 27 Apr 2021 109m away

  GROUND FLOOR REAR EXTENSION

  Granted Householder Extension 11 docs
  Domestic

• 13 Gwynant Crescent Cyncoed Cardiff CF23 6LT

  25/01849/NMA Submitted 7 Aug 2025 140m away

  Proposed Non-Material Amendment to Planning Permission 23/02834/HSE - 1) The installation of a different Air Source Heat Pump (ASHP). 2) A slight change in positioning of the ASHP.

  Granted Amendments 6 docs

• 23 Llandennis Avenue Cyncoed Cardiff CF23 6JE

  26/00488/HSE Submitted 11 Mar 2026 151m away

  Single storey side garage. Two storey front and rear extensions. Single storey rear extension and loft conversion with two dormers.

  Granted Householder Extension Loft or dormer 15 docs
  Small domestic

• 12 Padarn Close Cyncoed Cardiff CF23 6ER

  24/01174/NMA Submitted 20 May 2024 153m away

  Proposed Non-Material Amendment to Planning Permission 19/01902/DCH - Alterations to windows (width and heights), and the outbuilding as approved

  Granted Amendments Windows or glazing 33 docs

• 25/01805/HSE Refused

  12 Hamilton Street Pontcanna Cardiff CF11 9BP

  Replacement of the existing ground and first floor front bay windows with sliding sash uPVC windows.

  1 Aug 2025 Householder
• 26/01543/HSE Refused

  2 Camelot Way Thornhill Cardiff CF14 9AN

  Proposed open sided car port, drainage to one side and into a gravel soakaway.

  24 Jul 2026 Householder
• 26/01841/HSE Awaiting decision

  160 Heol Llanishen Fach Rhiwbina Cardiff CF14 6RG

  Two storey side extension and loft conversion with front and rear dormers

  1 Sep 2026 Householder
• 26/01505/HSE Granted

  100 Caer Wenallt Rhiwbina Cardiff CF14 7HQ

  Front & rear dormers, porch & internal alterations.

  20 Jul 2026 Householder
• 26/01835/HSE Awaiting decision

  35 Chamberlain Road Llandaff North Cardiff CF14 2LW

  Demolition of existing garage and erection of 2 storey side extension and alterations.

  31 Aug 2026 Householder