4 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
About 4 Gwendoline Street
4 Gwendoline Street is a four-bedroom mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5BW). It has a recorded floor area of 155 m² (around 1668 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (September 2019) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since November 2009. Between certificates, lighting went from Good to Very Good. The recommended improvements would push it to C (score 79).
At 155 m² the property is well over the postcode median (92 m² across 23 EPCs), placing it in the larger end of the local stock. Across 2007–2023, sale prices on this property compounded at 7.9% per year. On a £-per-square-foot basis, the last sale (£129/sq ft) was about 162% above the typical sold price in the postcode. Most recent transfer: January 2023 at £216,000.
Know exactly what you're buying at 4 Gwendoline 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
What this property has
Inside
- Bedrooms4
Energy performance
4 Gwendoline Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Heating controls upgraded for better temperature management
Planning history
4 Gwendoline Street has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 4 Gwendoline 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
Latest sale on 4 Gwendoline Street was the highest on Land Registry record across the postcode.
£236,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.9% per year over 16 years.
£216,000
Growth on file: 7.9% per year over 16 years.
Sales timeline
6 January 2023Most recent
£216,000
+232.3%over 15 years23 February 2007
£65,000
Median price across the last 5 sales in CF42 5BW: £65,000 (2024–2019).
Nearby sales in CF42 5BW
10 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Jun 2024
£132,50093a, Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Jan 2024
£35,00093 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Mar 2022
£65,50095 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Dec 2019
£65,00096 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Jun 2018
£64,995
Everything we know about 4 Gwendoline 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 Gwendoline Street homes
4 Gwendoline Street outperforms the street on price per m² by a wide margin.
Price per m²
£1,394
Street avg £681
Floor Area
155 m²
Street avg 90 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
7.0 t/year
Street avg 5.1 t/year
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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
Wyndham Hotel — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.