Planning application
26/0470/HH
21 Heol Isaf Nelson Treharris CF46 6NS
Proposal
Demolish existing rear conservatory and detached garage and construct new single storey rear extension
As published by the council, reference 26/0470/HH
Timeline
Dates from the published record
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10 Jul 2026
Received by Caerphilly
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14 Jul 2026
Validated
Checked as complete and ready for consideration.
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28 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Caerphilly for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
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.
Nearby applications
Within 500 metres
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26/0301/CLPU Granted
24 Heol Isaf Nelson Treharris CF46 6NS
Obtain Certificate of Lawful Proposed Development for proposed rear single storey extension
-
26/0050/HH Granted
6 Heol Isaf Nelson Treharris CF46 6NS
Erect rear roof extension, raise the ridge and rear dormer
-
26/0449/CLEU Awaiting decision
32 Mountain Way Nelson Treharris CF46 6NY
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
-
25/0702/HH Granted
16 Mountain Way Nelson Treharris CF46 6NY
Extend porch across the front of the property
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25/0542/COND Decided
Former Wern Stores Caerphilly Road Nelson CF46 6NH
Discharge conditions 03 (Protective Fencing), 04 (Landscaping), 09 (Contamination), 10 (Imported soils & hardcore), 11 (Contamination-validation), 12 (Dust Control), 13 (Noise Mitigation: Construction) and 20 (Boundary Treatments) of planning consent 25/0009/FULL (Erect two dwellings and access)
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26/0073/NMA Granted
Wern Stores Caerphilly Road Nelson
Seek approval of a non-material amendment to planning consent 25/0009/FULL (Erect two dwellings and access) to change part of the front elevation from stone to brick, amend roof profile and window layout
Other householder applications
In Caerphilly
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26/0330/HH Granted
1 Cae Gorlan Street Abercarn Newport NP11 4TA
Erect first floor extension and ground floor rear extension
-
26/0379/HH Granted
9 Pencoed Avenue Cefn Fforest Blackwood NP12 3LD
Erect a single storey flat roof rear extension
-
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
-
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
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26/0368/HH Refused
15 Rowan Close Nelson Treharris CF46 6EN
Erect two storey rear extension and side garage extension