4 Lon-y-dderwen Nelson Treharris CF46 6HS

1. 24 Oct 2025

   Received by Caerphilly

2. 3 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 19 Dec 2025

   Decision issued: Granted

4. 28 Jul 2026

   Added to PlanIndex

Caerphilly granted permission on 19 December 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.

• 4 Lon-Y-Celyn Nelson Treharris CF46 6HT

  23/0132/HH Submitted 16 Feb 2023 50 yards away

  Erect extension to the rear and side together with a front porch

  Refused Householder Extension 9 docs
  Small domestic

• 23 Lon-Y-Celyn Nelson Treharris CF46 6HT

  23/0199/FULL Submitted 16 Mar 2023 100 yards away

  Demolish garage and erect single storey side extension

  Granted Full applications Extension Demolition 7 docs
  Small domestic

• Yn Yr Ardd 1A Clos Cae Pwll Nelson Treharris CF46 6LA

  21/0257/TPO Submitted 11 Mar 2021 150 yards away

  Reduce crown of Oak Tree by 25 to 30% (Tree Preservation Order 3/75/RVDC)

  Granted Trees 7 docs

• 53B Shingrig Road Nelson Treharris CF46 6DU

  26/0339/FULL Submitted 15 May 2026 250 yards away

  Erect fire escape staircase and associated internal alterations

  Granted Full applications 11 docs

• 15 Rowan Close Nelson Treharris CF46 6EN

  26/0368/HH Submitted 20 May 2026 300 yards away

  Erect two storey rear extension and side garage extension

  Refused Householder Extension 7 docs
  Domestic

• 29 Tawelfan Nelson Treharris CF46 6EH

  26/0329/NCC Submitted 29 Apr 2026 450 yards away

  Vary condition 02 (Approved Documents) of planning consent 25/0235/HH (Erect two storey side and single storey rear extension) to amend plans

  Granted Extension 7 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