Wales · Postcode district CF46
Planning Constraints in CF46Treharris
Treharris sits in the CF46 postcode district, which also covers Quakers Yard, Bedlinog, Nelson, Wales, home to around 14,291 people. Before you buy, extend, or apply for planning permission here, check what applies to the exact address — conservation status, flood risk, heritage protection and more — using official government data.
What we check in Treharris
The free checker tests around 40 open datasets against your exact pin, not just the postcode district as a whole. Here’s what’s covered.
Heritage (Cadw)
- ·Conservation areas
- ·Listed buildings
- ·Scheduled monuments and their constraint areas
- ·Registered historic landscapes, parks and gardens
Flood risk (TAN15)
- ·Flood Map for Planning — rivers and sea
- ·Surface water and small watercourses
- ·TAN15 defended zones
Ecology & landscape (NRW)
- ·Sites of Special Scientific Interest (SSSIs)
- ·Ancient woodland
- ·National Parks, AONBs and Heritage Coast
Water quality
- ·Phosphate-sensitive SAC catchments
- ·Groundwater source protection zones
- ·Statutory main rivers
And more
- ·Special Areas of Conservation, SPAs and Ramsar sites
- ·Coal mining risk areas
- ·Air Quality Management Areas
- ·Road, rail and industrial noise
Frequently asked
Is Treharris in a conservation area?+
Conservation area boundaries are drawn street by street, so whether a specific address in Treharris (postcode district CF46) falls inside one depends on the exact pin. The free checker plots the boundary on a map so you can see immediately whether your address is inside, and how close the nearest one is if not.
How do I check flood risk for a property in CF46?+
Enter or click the address in the free checker to see Natural Resources Wales Flood Map for Planning mapping — the map TAN15 has worked from since March 2025 — for that exact point in Treharris. It shows whether the property sits in Flood Zone 2 or 3, whether the area is defended, and the publication date of the map edition used.
Are there listed buildings near Treharris?+
Wales has listed buildings ranging from Grade II to Grade I, and they can sit right next to unlisted properties. Search the address in the checker to see every listed building nearby, its grade, and its distance from your pin — sourced from Cadw, which designates and maintains the list in Wales.
What does the Site Report Pass add for CF46?+
The free checker covers every designation above at no cost. The £9.99 Site Report Pass turns a single search into a downloadable PDF with plain-English notes on what each result means, recommended next checks, and the underlying data as CSV — handy for a mortgage application, planning pre-app, or due diligence file.
Ready to check a site in Treharris?
Search the exact address on the map, or click any point, for a full planning constraints result in seconds.