6 John Street, Treherbert, Treorchy, CF42 5HH
About 6 John Street
6 John Street is a mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5HH). It has a recorded floor area of 62 m² (around 667 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (January 2024) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2013. Between certificates, lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Good. The recommended improvements would lift it to B (score 84), a 2-band jump.
Know exactly what you're buying at 6 John Street
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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
6 John Street has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 6 John Street
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
6 John Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£117,000
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.
Median price across the last 5 sales in CF42 5HH: £82,000 (2023–2018).
Nearby sales in CF42 5HH
2 John Street, Treherbert, Treorchy, CF42 5HH
Sold Jun 2023
£82,0008 John Street, Treherbert, Treorchy, CF42 5HH
Sold Jan 2023
£97,0004 John Street, Treherbert, Treorchy, CF42 5HH
Sold Sept 2021
£85,0007 John Street, Treherbert, Treorchy, CF42 5HH
Sold Jun 2018
£70,0001 John Street, Treherbert, Treorchy, CF42 5HH
Sold Feb 2011
£43,000
Everything we know about 6 John Street, 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 John Street homes
EPC Rating for 6 John Street runs comfortably ahead of the street norm.
EPC Rating
61 (D)
Street avg 56 (D)
Floor Area
62 m²
Street avg 66 m²
CO₂ Emissions
4.2 t/year
Street avg 4.7 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
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1 Corbett Street, Treherbert
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1 Cwmsaerbren Flats, Treherbert
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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
0.1 km
New Inn — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.