4 Clos Ioan, Treherbert, Treorchy, CF42 5AQ
About 4 Clos Ioan
4 Clos Ioan is a semi-detached house in Treherbert, Treorchy, Treorchy (CF42 5AQ). It has a recorded floor area of 112 m² (around 1206 sq ft), construction records dating it to 2007-2011 and council tax band D. The latest certificate (April 2023) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (November 2011); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and roof efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 88).
Know exactly what you're buying at 4 Clos Ioan
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
More low energy lighting installed
Planning history
4 Clos Ioan has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 4 Clos Ioan
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
30-day money-back guarantee
Sales history & valuation
4 Clos Ioan has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£201,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Everything we know about 4 Clos Ioan, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area

Versus other Clos Ioan homes
On epc rating, 4 Clos Ioan runs well behind the street norm.
EPC Rating
78 (C)
Street avg 85 (B)
Floor Area
112 m²
Street avg 105 m²
CO₂ Emissions
3.7 t/year
Street avg 1.4 t/year
Similar properties nearby
1 Blaenrhondda Road, Blaenrhondda
CF42 5SP
1 Blaen Y Cwm Terrace, Treherbert
CF42 5ND
1 Clos Ioan, Treherbert
CF42 5AQ
1 Castleton Avenue, Treherbert
CF42 5SS
1 Clyngwyn Road, Blaenrhondda
CF42 5SL
1 Brynfedwen Close, Treherbert
CF42 5PB
1 David Street, Treherbert
CF42 5LB
1 Coldra Road, Treherbert
CF42 5ST
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Tappers Garage — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.