20 Ty'n-y-cae Grove Rhiwbina Cardiff CF14 6DB

1. 15 Feb 2023

   Received by Cardiff

2. 16 Feb 2023

   Validated

   Checked as complete and ready for consideration.

3. 13 Apr 2023

   Decision issued: Permission Granted

4. 7 Sep 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

• 10 Lon Ty'n-y-cae Rhiwbina Cardiff CF14 6DD

  24/01695/HSE Submitted 19 Jul 2024 31m away

  Single storey rear extension. Loft conversion with gabled rear wall. Driveway alterations at front.

  Granted Householder Extension Loft or dormer 8 docs
  Small domestic

• 6 Ty'n-y-cae Grove Rhiwbina Cardiff CF14 6DB

  26/01073/HSE Submitted 26 May 2026 61m away

  Single storey side and rear extension.

  Granted Householder Extension 6 docs
  Small domestic

• 21 Heol Ty'n-y-cae Rhiwbina Cardiff CF14 6DJ

  25/00582/HSE Submitted 7 Mar 2025 82m away

  Demolition of an existing single storey flat roofed extension; and proposed extension to the existing bungalow, including single storey rear extension, side extension, and loft conversion, comprising raised ridge, hip to gable extension and dormers to front and rear, and associated works.

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

• 4 Clas Ty'N-Y-Cae Rhiwbina Cardiff CF14 6DA

  21/01379/DCH Submitted 28 May 2021 84m away

  DEMOLITION OF EXISTING GARAGE/STORE ROOM AND CONSTRUCTION OF SINGLE STOREY SIDE AND REAR EXTENSION

  Granted Householder Extension Demolition 7 docs
  Small domestic

• 201 Pantbach Road Rhiwbina Cardiff CF14 6AE

  26/00074/HSE Submitted 15 Jan 2026 99m away

  Side dormer roof extensions. Two storey gabled rear extension with first floor Juliette balcony and external alterations to the property.

  Granted Householder Extension Loft or dormer 7 docs
  Domestic

• 6 Lon Penllyn Rhiwbina Cardiff CF14 6BZ

  26/00408/HSE Submitted 26 Feb 2026 101m away

  Side hip to gable roof extension with two pitched roof front dormers. Two storey rear extension with rear dormer extension.

  Refused Householder Extension Loft or dormer 6 docs
  Domestic

• 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