40 Sierra Pines Mountain Ash Rhondda Cynon Taf CF45 3DS

This site has had 2 applications since 2025: 2 approved, 0 refused.

• 25/1064/FUL Granted

  40 Sierra Pines Mountain Ash Rhondda Cynon Taf CF45 3DS

  Construction of 2 storey duo-pitch extension to side elevation as a granny annexe

  Decided 12 Dec 2025 Full applications

1. 17 Feb 2026

   Received by Rhondda Cynon Taf

2. 19 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Apr 2026

   Decision issued: Approve

4. 28 Jul 2026

   Added to PlanIndex

• 25/1064/FUL Granted

  40 Sierra Pines Mountain Ash Rhondda Cynon Taf CF45 3DS

  Construction of 2 storey duo-pitch extension to side elevation as a granny annexe

  Decided 12 Dec 2025 Full applications

Rhondda Cynon Taf granted permission on 10 April 2026, 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.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• 40 Sierra Pines Mountain Ash Rhondda Cynon Taf CF45 3DS

  25/1064/FUL Submitted 16 Oct 2025 50 yards away

  Construction of 2 storey duo-pitch extension to side elevation as a granny annexe

  Granted Full applications Extension 9 docs

• 38 Sierra Pines Mountain Ash CF45 3DS

  05/1789/FUL Submitted 27 Sep 2005 50 yards away

  Two storey extension to match all existing finishes. Remove existing garage door. Replace with window and brickwork to match existing.

  Granted Full applications Extension Windows or glazing

• Llethrau 5 CWM Alarch Close Mountain Ash CF45 3DT

  21/0183/10 Submitted 9 Feb 2021 100 yards away

  Single storey extension to front of the property.

  Granted Full applications Extension 9 docs
  Small domestic

• 6 Woodlands Cwm Alarch Close Glenboi Mountain Ash Rhondda Cynon Taf CF45 3DT

  26/0906/FUL Submitted 16 Oct 2026 100 yards away

  92% historically approved · decision due ~14 Dec

  Installation of an Air to Water heat pump, to replace a gas boiler for water & central heating

  Awaiting decision Full applications 6 docs

• 8 Meadow Close Mountain Ash Rhondda Cynon Taf CF45 3DN

  25/0956/FUL Submitted 18 Sep 2025 200 yards away

  Proposed single-storey rear extension, with the demolition and relocation of the existing garage (additional plans received 15/10/2025)

  Granted Full applications Extension Demolition 9 docs
  Small domestic

• 7 Meadow Close Mountain Ash Rhondda Cynon Taf CF45 3DN

  26/0905/FUL Submitted 15 Oct 2026 200 yards away

  92% historically approved · decision due ~10 Dec

  Proposed single storey rear extension and division of an existing dwelling into two separate dwellings.

  Awaiting decision Full applications Extension
  Small domestic

• 26/0888/NMA Granted

  Clydach Vale Rhondda Cynon Taf Cbc Cambrian Court Business Pavilion Clydach Tonypandy CF40 2XX

  Non-Material Amendment to planning permission 24/1297/FUL to amend the wording of Conditions 7 (Validation Report) and 8 (Verification Report) to retain the requirement for gas protection measures to be completed prior to first occupation, and to amend the timing of the landscaping cover requirements to within 3 months following first occupation.

  Received 9 Oct, published by the council 12 Oct 2026 Amendments
• 26/0887/NMA Granted

  12 Sunnyside Main Road Abercynon Rhondda Cynon Taf CF45 4DJ

  Non-Material Amendment to Condition 1 to amend the approved plans in relation to the retaining wall, and the removal of Condition 2, which requires structural details of the retaining wall to be submitted and approved.

  Received 9 Oct, published by the council 13 Oct 2026 Amendments
• 26/0857/NMA Granted

  Cartref Llantrisant Road To Newbridge Road Brynteg Beddau Rhondda Cynon Taf CF72 8LR

  Proposed non-material amendment of previously approved planning application 26/0626/FUL, to amend the description of development to 'Subdivision of curtilage and phased residential development (Re-submission), comprising a separate site-wide enabling works phase and individual phases as shown on approved Phasing Plan NMA-PH01 Rev A.'

  Received 1 Oct, published by the council 16 Oct 2026 Amendments
• 26/0852/NMA Granted

  Craig Yr Hesg Primary School Cefn Lane Glyn-coch Pontypridd Rhondda Cynon Taf CF37 3BP

  Amendment to Condition 5 to reflect the phasing of the project and allow the existing access to be reinstated within one month of the completion of the phase 2 works.

  Received 30 Sep, published by the council 8 Oct 2026 Amendments
• 26/0833/NMA Granted

  Harlequin House Coedcae Lane Talbot Green Rhondda Cynon Taf CF72 8YY

  Non material amendment application to planning permission 25/1025/FUL to amend approved plans under condition no. 2

  Received 24 Sep, published by the council 25 Sep 2026 Amendments