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Planning application

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

Granted Cardiff 25/01297/HSE Householder Planning Permission

Works: Extension Demolition Small domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within five years of the decision or the permission lapses.

Proposal

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

As published by the council, reference 25/01297/HSE

Application record

Reference
25/01297/HSE
Type
Householder Planning Permission
Status
Decided
Decision
Permission Granted
Received
5 Jun 2025
Validated
25 Jun 2025
Decided
14 Aug 2025
Ward
HEATH
Decision by
Delegated to Group Leader
Postcode
CF14 4NZ

Timeline

Dates from the published record

  1. 5 Jun 2025

    Received by Cardiff

  2. 25 Jun 2025

    Validated

    Checked as complete and ready for consideration.

  3. 14 Aug 2025

    Decision issued: Permission Granted

  4. 13 Sep 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Duffryn Design Agent, a design practice

9 applications on PlanIndex · across 2 councils

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Documents

Plans, drawings, consultee responses and the officer's report

4 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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What this grant of permission means

Cardiff granted permission on 14 August 2025, subject to any conditions on the decision notice. Work must normally begin within five years or the permission lapses. More in our guide to what happens after a planning decision.

About householder applications

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.

Nearby applications

Within 500 metres

  • 68 Ton-yr-ywen Avenue Heath Cardiff CF14 4PB

    25/02162/HSE Submitted 22 Sep 2025 77m away

    93% historically approved · decision due ~19 Nov

    Demolition of existing store and rear single storey structure. Proposed single storey side and rear extension. Hip to gable and rear dormer roof extension.

    Awaiting decision Householder Extension Loft or dormer +1 9 docs
    Small domestic

  • 27 St Edwen Gardens Heath Cardiff CF14 4JZ

    24/02646/CLPUD Submitted 8 Nov 2024 83m away

    Single storey rear extension to create downstairs WC and Utility Room

    Granted Lawful development Extension 11 docs
    Small domestic

  • 23 St Edwen Gardens Heath Cardiff CF14 4JZ

    21/00924/DCH Submitted 14 Apr 2021 83m away

    SINGLE STOREY SIDE AND REAR EXTENSION

    Granted Householder Extension 10 docs
    Small domestic

  • 25 St Edwen Gardens Heath Cardiff CF14 4JZ

    26/01450/HSE Submitted 13 Jul 2026 83m away

    93% historically approved · decision due ~7 Sep

    Demolition of Garage and Proposed rear extension.

    Awaiting decision Householder Extension Demolition 11 docs
    Domestic

  • 21 St Edwen Gardens Heath Cardiff CF14 4JZ

    26/00178/CLPUD Submitted 29 Jan 2026 87m away

    Hip to gable and rear dormer roof extension. Demolition of existing lean to rear extension and construction of new single storey rear extension. External alterations to the property including installation of rooflights and PV Panels.

    Granted Lawful development Extension Loft or dormer +1 18 docs
    Small domestic

  • 1 Heol Gwent Heath Cardiff CF14 4PL

    22/03048/HSE Submitted 21 Dec 2022 90m away

    Demolition of garage and erection of single storey side extension

    Refused Householder Extension Demolition 11 docs
    Small domestic

In Cardiff

  • 26/01907/HSE Awaiting decision

    46 Oakley Place Grangetown Cardiff CF11 7EW

    Rear dormer roof extension.

    10 Sep 2026 Householder
  • 26/01013/HSE Granted

    74 Beulah Road Rhiwbina Cardiff CF14 6LY

    Rear, side and front extensions, raised roof ridge height, front and rear dormers and minor internal and external works.

    18 May 2026 Householder
  • 26/01611/HSE Granted

    6 Dewi Court 47 Cardiff Road Llandaff Cardiff CF5 2ET

    Replacement of existing sliding patio doors with french doors, increase height of existing garden boundary walls on 2 sides with trellis and installation of stand alone garden room.

    30 Jul 2026 Householder
  • 26/01592/HSE Granted

    20 Meadow Street Pontcanna Cardiff CF11 9PY

    Construction of single storey rear wrap around extension.

    29 Jul 2026 Householder
  • 26/01905/HSE Awaiting decision

    9 Clos William Rhiwbina Cardiff CF14 6QJ

    Single Storey Side/Rear Extension with Internal Alterations. Loft Reconfiguration with Dormers. Detached Garage Enlargement.

    9 Sep 2026 Householder