P/26/0150

1. 7 Jul 2026

   Received by Merthyr Tydfil

2. 24 Jul 2026

   Decision issued: Certificate of Law Granted

3. 28 Jul 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

• P/25/0213 Granted

  Winfield 10 School Road Troedyrhiw Merthyr Tydfil CF48 4JS

  Change of use from C1 (hotel/guesthouse) to C3 (House) for adults requiring care - Support living (vulnerable adults)

  28 Jul 2025 77m away Full applications
• P/25/0269 Refused

  6 Cardiff Road Troedyrhiw Merthyr Tydfil CF48 4LB

  Proposed change of use from dwelling to a 8 bedroom House in Multiple Occupation all with en-suites

  8 Oct 2025 147m away Full applications
• P/25/0290 Granted

  13 Tyntaldwyn Road Troedyrhiw Merthyr Tydfil CF48 4NG

  Discharge conditions 3 (materials for parking area, including surface), 4 (details of boundary treatments) and 6 (details of retaining walls) of planning permission P/25/0240.

  10 Nov 2025 156m away Conditions
• P/25/0240 Granted

  13 Tyntaldwyn Road Troedyrhiw Merthyr Tydfil CF48 4NG

  Two storey rear extension and creation of parking area to the front with associated re-profiling and retaining works

  4 Sep 2025 156m away Full applications
• P/26/0071 Granted

  Troedyrhiw Primary School-Juniors Building No. 2 Archer Street Troedyrhiw Merthyr Tydfil CF48 4JQ

  Replacement of two existing windows with new doors and removal of an additional existing window. Replacement of the existing external fence with a new 2.4m-high fence and provision of hardstanding

  30 Mar 2026 193m away Full applications
• P/25/0277 Status unknown

  Former Ynysgau Chapel Wyndham Street Troedyrhiw Merthyr Tydfil CF48 4JY

  Discharge conditions 3 (boundary treatments), 4 (external materials), 5 (Retaining Walls), 10 (external lighting) and 12 (planting scheme) of planning permission P/23/0133.

  22 Oct 2025 275m away Conditions

• P/26/0132 Granted

  Cotham Heol-y-mynydd Cefn Coed Merthyr Tydfil CF48 2NQ

  Lawful Development Certificate for a proposed single storey rear extension

  17 Jun 2026 Lawful development
• P/26/0161 Status unknown

  Cefn Fforest Farm Twynygarreg Treharris CF46 5RN

  Lawful Development Certificate for proposed assorted extensions and works

  15 Jul 2026 Lawful development
• P/26/0088 Granted

  44 Webster Street Treharris CF46 5HP

  New solar panels to the rear of the property

  29 Apr 2026 Lawful development
• P/26/0081 Granted

  Penbwlcha Farm Treharris CF46 5RN

  Certificate of lawfulness for the siting of an existing caravan and its proposed residential use ancillary to the main dwelling.

  30 Apr 2026 Lawful development
• P/25/0191 Status unknown

  9 Pond Row Abercanaid Merthyr Tydfil CF48 1YT

  Erection of single storey rear extension

  26 Jun 2026 Lawful development