53 Ton-yr-ywen Avenue Heath Cardiff CF14 4NZ

This site has had 2 applications since 2026: 0 approved, 1 refused.

• 26/00690/HSE Refused

  53 Ton-yr-ywen Avenue Heath Cardiff CF14 4NZ

  Part two-storey/first-floor side extension, side extension to existing single storey rear extension, garage conversion with rear extension and rear dormer to main roof

  Decided 30 Jun 2026 Householder

1. 22 Sep 2026

   Received by Cardiff

2. 28 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 17 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Cardiff took a median of 56 days over the applications it decided in the last year.

This application is with Cardiff for determination, against a statutory target of eight weeks. Over the last year Cardiff decided householder applications in a median of 59 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 53 Ton-yr-ywen Avenue Heath Cardiff CF14 4NZ

  26/00690/HSE Submitted 2 Apr 2026 50 yards away

  Part two-storey/first-floor side extension, side extension to existing single storey rear extension, garage conversion with rear extension and rear dormer to main roof

  Refused Householder Extension Loft or dormer 8 docs
  Small domestic

• 110 Ton-Yr-Ywen Avenue Heath Cardiff CF14 4PD

  22/00594/DCH Submitted 16 Mar 2022 50 yards away

  SINGLE STOREY REAR EXTENSION, FRONT PORCH EXTENSION AND REMOVAL OF CHIMNEY

  Granted Householder Extension 10 docs
  Small domestic

• 37 Ton-yr-ywen Avenue Heath Cardiff CF14 4NZ

  25/01297/HSE Submitted 5 Jun 2025 100 yards away

  Demolition of existing rear utility / wc room & out house. Proposed side and rear single storey extension.

  Granted Householder Extension Demolition 4 docs
  Small domestic

• 29 St Edwen Gardens Heath Cardiff CF14 4JZ

  23/00810/HSE Submitted 11 Apr 2023 100 yards away

  Single storey rear extension

  Granted Householder Extension 5 docs
  Small domestic

• 26 Milestone Close Heath Cardiff CF14 4NQ

  26/01989/HSE Submitted 18 Sep 2026 100 yards away

  93% historically approved · decision due ~13 Nov

  Conversion of integral garage.

  Awaiting decision Householder 4 docs
  Domestic

• 27 St Edwen Gardens Heath Cardiff CF14 4JZ

  24/02646/CLPUD Submitted 8 Nov 2024 150 yards away

  Single storey rear extension to create downstairs WC and Utility Room

  Granted Lawful development Extension 11 docs
  Small domestic

• 26/02112/HSE Awaiting decision

  7 Penydarren Drive Whitchurch Cardiff CF14 2TT

  Proposed Single Storey Side/Rear Extension with Garage Conversion

  Received 7 Oct, published by the council 9 Oct 2026 Householder
• 26/02113/HSE Awaiting decision

  78 Mill Road Lisvane Cardiff CF14 0UG

  PROPOSED FIRST FLOOR EXTENSION AT SIDE OF HOUSE

  Received 7 Oct, published by the council 9 Oct 2026 Householder
• 26/01702/HSE Granted

  45 Gwern Rhuddi Road Cyncoed Cardiff CF23 6PS

  Two storey and single storey rear extensions (development similar to that as approved under 25/00533/HSE with additional first floor part).

  Received 10 Aug, published by the council 24 Aug 2026 Householder
• 26/02104/HSE Awaiting decision

  15 Brynteg Rhiwbina Cardiff CF14 6TS

  Proposed single storey rear extension to the existing semi-detached dwelling including minor internal and external modifications

  Received 6 Oct, published by the council 9 Oct 2026 Householder
• 26/02102/HSE Awaiting decision

  49 Kimberley Road Penylan Cardiff CF23 5DL

  Proposed ground floor rear side return extension

  Received 6 Oct, published by the council 9 Oct 2026 Householder