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Planning application

25/0735/HH

4 Lon-y-dderwen Nelson Treharris CF46 6HS

Granted Caerphilly Householder Application

Proposal

Erect single storey side extension

As published by the council, reference 25/0735/HH

Timeline

Dates from the published record

  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

What a grant of permission means

The process from here

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.

About householder applications

How this application type works

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

Nearby applications

Within 500 metres

  • 26/0339/FULL Granted

    53B Shingrig Road Nelson Treharris CF46 6DU

    Erect fire escape staircase and associated internal alterations

    15 May 2026 230m away Full applications
  • 26/0368/HH Refused

    15 Rowan Close Nelson Treharris CF46 6EN

    Erect two storey rear extension and side garage extension

    20 May 2026 281m away Householder
  • 26/0329/NCC Awaiting decision

    29 Tawelfan Nelson Treharris CF46 6EH

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

    29 Apr 2026 390m away
  • 25/0820/NMA Refused

    The Rectory High Street Nelson Treharris CF46 6HA

    Seek approval of a non-material amendment to planning consent 18/0443/CON (Demolish Rectory, garage and outbuildings) & 18/0444/FULL (Construct two social rented units and one market house) to Insert glazing fitted with light limiting film for two first floor windows on South Elevation

    26 Nov 2025 443m away Amendments
  • 26/0006/NCC Granted

    The Rectory High Street Nelson Treharris CF46 6HA

    Vary condition 02 (Approved Plans) of planning permission 18/0444/FULL (Construct two social rented units and one market house) to enable the installation of an additional first floor window in two of the properties along with internal alteration in two properties to create two single bedrooms in two properties as opposed to one double bedroom.

    6 Jan 2026 445m away
  • 26/0002/NMA Granted

    Tirnant Brooklands Nelson Treharris CF46 6DR

    Seek approval of a non-material amendment to planning consent 20/1088/FULL (Demolish existing dwelling and erection of new dwelling) to amend trigger points in relation to condition 04 (Bat Activity Surveys) and 07 (Materials)

    2 Jan 2026 448m away Amendments

In Caerphilly

  • 26/0330/HH Granted

    1 Cae Gorlan Street Abercarn Newport NP11 4TA

    Erect first floor extension and ground floor rear extension

    30 Apr 2026 Householder
  • 26/0379/HH Granted

    9 Pencoed Avenue Cefn Fforest Blackwood NP12 3LD

    Erect a single storey flat roof rear extension

    1 Jun 2026 Householder
  • 26/0378/HH Granted

    12 Glyn Derwen Llanbradach Caerphilly CF83 3PQ

    Erect rear extension to first floor and extend front first floor dormer to bedroom

    29 May 2026 Householder
  • 26/0354/HH Granted

    17 Coronation Crescent Pantside Newport NP11 5DJ

    Extend existing driveway and build new pathway to bungalow, build new walls, take down existing wall and put in eco drains

    21 May 2026 Householder
  • 26/0368/HH Refused

    15 Rowan Close Nelson Treharris CF46 6EN

    Erect two storey rear extension and side garage extension

    20 May 2026 Householder