16 Mountain Way Nelson Treharris CF46 6NY

1. 13 Oct 2025

   Received by Caerphilly

2. 7 Nov 2025

   Decision issued: Granted

3. 28 Jul 2026

   Added to PlanIndex

Caerphilly granted permission on 7 November 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.

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.

• 32 Mountain Way Nelson Treharris CF46 6NY

  26/0449/CLEU Submitted 2 Jul 2026 50 yards away

  Obtain a Lawful Development Certificate to establish that the side extension was substantially completed more than 4 years prior to the submission of this application

  Granted Lawful development Extension 10 docs

• 1 Mountain Way Nelson Treharris CF46 6NY

  24/0799/TPO Submitted 4 Nov 2024 50 yards away

  Remove dead wood from tree overhanging from T4 (Tree Preservation Order 48/82/RVDC)

  Granted Trees 7 docs

• 21 Beech Tree Way Nelson Treharris CF46 6NU

  24/0798/TPO Submitted 1 Nov 2024 100 yards away

  Carry out various tree works (Tree Preservation Order 48/82/RVDC)

  Granted Trees 5 docs

• 6 Heol Isaf Nelson Treharris CF46 6NS

  26/0050/HH Submitted 22 Jan 2026 250 yards away

  Erect rear roof extension, raise the ridge and rear dormer

  Granted Householder Extension Loft or dormer +1 10 docs
  Domestic

• 24 Heol Isaf Nelson Treharris CF46 6NS

  26/0301/CLPU Submitted 22 Apr 2026 250 yards away

  Obtain Certificate of Lawful Proposed Development for proposed rear single storey extension

  Granted Lawful development Extension 8 docs
  Small domestic

• 21 Heol Isaf Nelson Treharris CF46 6NS

  26/0470/HH Submitted 10 Jul 2026 250 yards away

  Demolish existing rear conservatory and detached garage and construct new single storey rear extension

  Granted Householder Extension Demolition 9 docs
  Small domestic

• 26/0528/HH Granted

  Bryncanol Ty Canol Lane Machen Caerphilly CF83 8QE

  Demolish existing lean-to rear extension, raise ridge height, erect first-floor front extension, convert loft to include two dormers to the front and two dormers to the rear and associated landscaping works, including extending the existing terrace to the front

  Received 5 Aug, published by the council 14 Aug 2026 Householder
• 26/0649/HH Awaiting decision

  Graig View Cottage The Row To Gwern-y-goytre Draethen Newport NP10 8GF

  Erect a raised decking area

  Received 28 Sep, published by the council 5 Oct 2026 Householder
• 26/0505/HH Granted

  18 Redbrook Avenue Trethomas Caerphilly CF83 8DB

  Erect split level two storey extension to rear of property

  Received 30 Jul, published by the council 7 Aug 2026 Householder
• 26/0383/HH Refused

  Woodland Cottage Cwmnofydd Farm Lane Machen Caerphilly CF83 8NR

  Erect two storey rear extension

  Received 2 Jun, published by the council 28 Jul 2026 Householder
• 26/0503/HH Granted

  13 Ebbw Meadow Abercarn Newport NP11 5GL

  Erect a double storey rear extension with a single storey side extension

  Received 28 Jul, published by the council 7 Aug 2026 Householder