28 Dorchester Avenue Penylan Cardiff CF23 9BR

1. 23 Jun 2021

   Received by Cardiff

2. 28 Jun 2021

   Validated

   Checked as complete and ready for consideration.

3. 26 Jul 2021

   Decision issued: Permission Granted

4. 29 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.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 34 Dorchester Avenue Penylan Cardiff CF23 9BR

  26/01560/HSE Submitted 27 Jul 2026 50m away

  92% historically approved · decision due ~21 Sep

  Raise ridge loft conversion with rear dormer and roof window to front elevation

  Awaiting decision Householder Loft or dormer Windows or glazing 4 docs
  Domestic

• 20 Dorchester Avenue Penylan Cardiff CF23 9BR

  26/01496/HSE Submitted 20 Jul 2026 57m away

  92% historically approved · decision due ~14 Sep

  Retrospective permission for proposed loft dormer and side gable extension.

  Awaiting decision Householder Extension Loft or dormer 8 docs
  Domestic

• 20 Dorchester Avenue Penylan Cardiff CF23 9BR

  26/01302/CLPUD Submitted 22 Jun 2026 57m away

  Rear loft dormer and creation a gable end.

  Withdrawn Lawful development Loft or dormer 11 docs

• 36 Dorchester Avenue Penylan Cardiff CF23 9BR

  21/00185/DCH Submitted 25 Jan 2021 71m away

  PROPOSED REAR EXTENSION AND ASSOCIATED EXTERNAL ALTERATIONS INCLUDING RAISED TERRRACE/STEPS TO REAR GARDEN

  Granted Householder Extension 19 docs
  Domestic

• 7 Ferny Court Penylan Cardiff CF23 9BU

  25/01758/WTTPP Submitted 25 Jul 2025 91m away

  2 x Tilia Europea (rear garden) - Crown raise over highway to approx. 4.5m to suitable alternative pruning points due to overhanging public footpath and road

  Granted Trees 3 docs

• 7 & 8 Ferny Court Penylan Cardiff CF23 9BU

  26/01866/WTTPF Submitted 26 Aug 2026 91m away

  100% historically approved · decision due ~21 Oct

  Felling and removal of trees affecting retaining wall.

  Awaiting decision Trees 5 docs

• 26/01705/CLPUD Granted

  390 Cyncoed Road Cyncoed Cardiff CF23 6SA

  Use of 390 Cyncoed Road as residential accommodation for up to six adults with mental health conditions, living together as a single household, with care and support provided by non-resident staff

  11 Aug 2026 Lawful development
• 26/01807/CLPUD Awaiting decision

  33 Blossom Drive Lisvane Cardiff CF14 0BE

  Proposed single storey rear extension and conversion of integral garage

  25 Aug 2026 Lawful development
• 26/01476/CLPUD Granted

  71 Llandennis Avenue Cyncoed Cardiff CF23 6JF

  Single storey extension to side and rear.

  16 Jul 2026 Lawful development
• 26/01662/CLEUD Granted

  2 Llantwit Street Cathays Cardiff CF24 4AJ

  Use of the property as four self-contained flats.

  5 Aug 2026 Lawful development
• 26/01775/CLEUD Awaiting decision

  62 Cottrell Road Roath Cardiff CF24 3EZ

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

  20 Aug 2026 Lawful development