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Planning application

P/25/0330

Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

Granted Merthyr Tydfil Listed Building Consent

Proposal

Works to the roof to include new walkways, fixed ladder access, new insulation and associated parapet and clerestory windows. Installation of new gutters and replacement of rainwater goods. Works to external elevation to include replacement windows, new doors and repair or replacement of lintels. Internal works to include the installation of new steel beams, repairs to timber reinforcements, new loft access hatch and bat boxes and minor revisions to the approve drainage scheme

As published by the council, reference P/25/0330

Timeline

Dates from the published record

  1. 12 Dec 2025

    Received by Merthyr Tydfil

  2. 15 Jun 2026

    Decision issued: Listed Building Approval

  3. 28 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

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.

About heritage and listed buildings applications

How this application type works

Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.

More on heritage and listed buildings applications in our guide

Nearby applications

Within 500 metres

  • P/26/0066 Withdrawn

    Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

    Works to the roof to include new walkways, fixed ladder access, new insulation and associated parapet and clerestory windows. Installation of new gutters and replacement of rainwater goods. Works to external elevation to include replacement windows, new doors and repair or replacement of lintels. Internal works to include the installation of new steel beams, repairs to timber reinforcements, new loft access hatch and bat boxes and minor revisions to the approved drainage scheme

    1 Apr 2026 0m away Heritage and listed buildings
  • P/26/0063 Granted

    Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

    Discharge of condition 3 details of cabling routes of planning permission P/25/0272

    24 Mar 2026 1m away Conditions
  • P/25/0272 Granted

    Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

    The proposed works comprise: - Refurbishment of main WCs and secondary, currently disused, WCs. - Upgrades to and expansion of CCTV provision internally. - Upgrades to 2 no. external CCTV cameras - existing fixings to be reused. - Introduction of improved and more energy efficient exhibition lighting. - Installation of Wi-Fi throughout the museum spaces

    16 Oct 2025 15m away Heritage and listed buildings
  • P/25/0249 Granted

    Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

    Discharge of conditions 3 Archaeologist and 4 WPP

    23 Oct 2025 47m away Conditions
  • P/25/0283 Granted

    Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

    Discharge of Condition 5 CEMP of planning permission P25/0178

    30 Oct 2025 53m away Conditions
  • P/25/0284 Granted

    Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

    Discharge of condition 5 of planning permission P/25/0087

    30 Oct 2025 92m away Conditions

In Merthyr Tydfil

  • P/26/0159 Status unknown

    Pentrebach House Duffryn Road Pentrebach Merthyr Tydfil CF48 4BB

    Internal and external refurbishment works to include new lighting, repair works, siting of new walk in unit, new enclosures and other associated works (LBC)

    14 Jul 2026 Heritage and listed buildings
  • P/26/0153 Status unknown

    1 Vulcan Court Vulcan Road Merthyr Tydfil CF47 8LZ

    Replace existing timber front door, frame and side screens with an exact copy in laminated timber to match original in style and colour. (Listed Building Consent)

    9 Jul 2026 Heritage and listed buildings
  • P/26/0134 Status unknown

    Pandy Farm Brecon Road Merthyr Tydfil CF47 8PA

    The change of use and extension to the building complex to create six units of holiday accommodation, along with internal and external works, the creation of a carpark and associated engineering and landscaping works.

    17 Jun 2026 Heritage and listed buildings
  • P/26/0079 Status unknown

    73 Nightingale Street Abercanaid Merthyr Tydfil CF48 1EJ

    Single storey rear extension and internal renovations

    13 Apr 2026 Heritage and listed buildings
  • P/26/0066 Withdrawn

    Cyfarthfa Castle Cyfarthfa Park Merthyr Tydfil CF47 8RE

    Works to the roof to include new walkways, fixed ladder access, new insulation and associated parapet and clerestory windows. Installation of new gutters and replacement of rainwater goods. Works to external elevation to include replacement windows, new doors and repair or replacement of lintels. Internal works to include the installation of new steel beams, repairs to timber reinforcements, new loft access hatch and bat boxes and minor revisions to the approved drainage scheme

    1 Apr 2026 Heritage and listed buildings