20 Barrett Street, Treorchy, CF42 6LN
About 20 Barrett Street
20 Barrett Street is a three-bedroom mid-terrace house in Treorchy (CF42 6LN). It has a recorded floor area of 97 m² (around 1044 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (December 2013) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2013. Between certificates, roof efficiency went from Very Poor to Good and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 83), a 2-band jump. The latest certificate is from December 2013, so improvements made since then won't be reflected. Other recorded features include notable views.
At 97 m² it's 29.3% larger than the typical home in the postcode (75 m² median across 21 EPCs). Across 2014–2022, sale prices on this property compounded at 5.4% per year. Today's modelled estimate of £119,000 is 48.8% above the 2022 sale price. Sold October 2022 for £80,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 20 Barrett Street
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
Outside
- Notable viewsYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 05 Dec 2023
EPC Rating
Property Improvements
Changes detected from historical EPC data
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Planning history
20 Barrett Street has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£119,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.4% per year over 8 years.
£80,000
Growth on file: 5.4% per year over 8 years.
Sales timeline
20 October 2022Most recent
£80,000
+50.9%over 7 years12 December 2014
£53,000
Median price across the last 5 sales in CF42 6LN: £120,000 (2025–2022).
Nearby sales in CF42 6LN
Everything we know about 20 Barrett Street, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Barrett Street homes
20 Barrett Street outperforms the street on floor area by a wide margin.
Price per m²
£825
Street avg £985
Floor Area
97 m²
Street avg 86 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
4.0 t/year
Street avg 4.8 t/year
Similar properties nearby
1 Barrett Street
CF42 6LN
1 Castle Street
CF42 6UY
1 Brynhyfryd Street
CF42 6DT
1 Dunraven Terrace
CF42 6EL
1 Dyfodwg Street
CF42 6NN
1 Cardiff Place
CF42 6BL
1 Bute Street
CF42 6DB
1 Chapel Street
CF42 6RT
The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Park Street — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.