10 Mary Street, Treherbert, Treorchy, CF42 5AE
About 10 Mary Street
10 Mary Street is an end-of-terrace house in Treherbert, Treorchy, Treorchy (CF42 5AE). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (August 2020) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in June 2019 the rating was E, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 74).
At 52 m² it's 25.2% smaller than the typical home in the postcode (70 m² median across 12 EPCs).
Know exactly what you're buying at 10 Mary 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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
Planning history
10 Mary Street has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 10 Mary 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
10 Mary Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£118,000
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 5AE: £105,000 (2024–2021).
Nearby sales in CF42 5AE
2 Mary Street, Treherbert, Treorchy, CF42 5AE
Sold Apr 2024
£63,0008 Mary Street, Treherbert, Treorchy, CF42 5AE
Sold Apr 2023
£105,000Eastlea, Mary Street, Treherbert, Treorchy, CF42 5AE
Sold May 2022
£186,0006 Mary Street, Treherbert, Treorchy, CF42 5AE
Sold Nov 2021
£139,9954 Mary Street, Treherbert, Treorchy, CF42 5AE
Sold Jun 2021
£65,000
Everything we know about 10 Mary 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 Mary Street homes
10 Mary Street is notably below the street on floor area.
EPC Rating
62 (D)
Street avg 66 (D)
Floor Area
52 m²
Street avg 72 m²
CO₂ Emissions
2.9 t/year
Street avg 3.9 t/year
Habitable Rooms
3 rooms
Street avg 4 rooms
Similar properties nearby
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1 Chapel Street, Blaenrhondda
CF42 5SE
1 Corbett Street, Treherbert
CF42 5EL
1 Cwmsaerbren Flats, Treherbert
CF42 5LA
1 Abertonllwyd Street, Treherbert
CF42 5PF
1 Blaen Y Cwm Road, Blaencwm
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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.