P/26/0006

1. 9 Jan 2026

   Received by Merthyr Tydfil

2. 4 Feb 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/26/0074 Granted

  Unit 4 Pengarnddu Industrial Estate Dowlais Merthyr Tydfil CF48 2TA

  Installation of Solar PV panels to roof

  8 Apr 2026 30m away Lawful development
• P/26/0038 Granted

  Plot 2 Pengarnddu Industrial Estate Dowlais Merthyr Tydfil CF48 2TA

  Non-material amendment to planning permission P/21/0164 to change the battery storage units and increase the number of containerised battery storage units from 12 to 16.

  20 Feb 2026 193m away Amendments
• P/26/0037 Granted

  Unit E Dowlais Top Retail Park Merthyr Tydfil CF48 2TA

  Illuminated sign to front of building

  27 Feb 2026 223m away Advertising
• P/26/0027 Granted

  Unit E Pengarnddu Industrial Estate Dowlais Merthyr Tydfil CF48 2TA

  Discharge of conditions 3 and 4 of planning permission P/25/0256 - Cycle Stands and NBB

  13 Feb 2026 224m away Conditions
• P/26/0001 Granted

  Former Carpetright Unit Unit E Dowlais Top Retail Park Merthyr Tydfil CF48 2TA

  New shopfront

  6 Jan 2026 224m away Full applications
• P/26/0002 Granted

  Former Carpetright Unit E Dowlais Top Retail Park Merthyr Tydfil CF48 2TA

  Canopy and new roller shutter door

  6 Jan 2026 224m away Full applications

• P/26/0150 Granted

  45 Taldwyn Terrace Merthyr Road Troedyrhiw Merthyr Tydfil CF48 4JL

  Rear dormer roof extension (lawful development certificate)

  7 Jul 2026 Lawful development
• 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