15 Blaen Y Cwm Terrace, Treherbert, Treorchy, CF42 5ND
About 15 Blaen Y Cwm Terrace
15 Blaen Y Cwm Terrace is a mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5ND). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (November 2021) shows a D (score 65), 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, roof efficiency went from Very Poor to Average, window efficiency went from Average to Good and hot-water efficiency went from Good to Very Good. The recommended improvements would push it to C (score 76).
Last sale on file: £125,000 in November 2022. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. At 89 m² it's 17.9% larger than the typical home in the postcode (76 m² median across 54 EPCs). Across 2001–2022, sale prices on this property compounded at 6.2% per year. Today's modelled estimate of £139,000 is 11.2% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£130/sq ft) was about 160.9% above the typical sold price in the postcode.
Know exactly what you're buying at 15 Blaen Y Cwm Terrace
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
Roof insulation improved
More low energy lighting installed
Hot water system upgraded
Window efficiency improved
Low energy lighting percentage decreased
Solar PV panels (50 kWp) and Solar water heating installed
Planning history
15 Blaen Y Cwm Terrace has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 2 things worth checking at 15 Blaen Y Cwm Terrace
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
- Recent ownership pattern worth a look
30-day money-back guarantee
Sales history & valuation
Sale price has grown by over 3x since 2001.
£139,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.2% per year over 21 years.
£125,000
Growth on file: 6.2% per year over 21 years.
Sales timeline
25 November 2022Most recent
£125,000
+55.3%over 7 months13 April 2022
£80,500
+71.3%over 17 years21 April 2004
£47,000
+34.3%over 2 years16 September 2001
£35,000
Median price across the last 5 sales in CF42 5ND: £70,000 (2025–2024).
Nearby sales in CF42 5ND
6 Blaen Y Cwm Terrace, Treherbert, Treorchy, CF42 5ND
Sold Jul 2025
£70,00042 Blaen Y Cwm Terrace, Treherbert, Treorchy, CF42 5ND
Sold Jul 2025
£68,00016 Blaen Y Cwm Terrace, Treherbert, Treorchy, CF42 5ND
Sold Dec 2024
£65,00057 Blaen Y Cwm Terrace, Treherbert, Treorchy, CF42 5ND
Sold Nov 2024
£77,00027 Blaen Y Cwm Terrace, Treherbert, Treorchy, CF42 5ND
Sold Nov 2024
£111,500
Everything we know about 15 Blaen Y Cwm Terrace, 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
- Recent ownership pattern worth a look

Versus other Blaen Y Cwm Terrace homes
On price per m², 15 Blaen Y Cwm Terrace stands well clear of the street.
Price per m²
£1,404
Street avg £802
Floor Area
89 m²
Street avg 79 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
3.8 t/year
Street avg 4.4 t/year
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The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Alban`s — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.