89 Gwendoline Street, Treherbert, Treorchy, CF42 5BP
About 89 Gwendoline Street
89 Gwendoline Street is a mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5BP). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (December 2024) shows a C (score 72). When first surveyed in July 2019 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Average to Good and window efficiency went from Average to Good. The recommended improvements would push it to B (score 85).
Today's modelled estimate of £125,000 sits 135.8% above the 2023 sale of £53,000. Sold October 2023 for £53,000.
Know exactly what you're buying at 89 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
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
Roof insulation improved
More low energy lighting installed
Planning history
89 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 89 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
89 Gwendoline Street valuation sits well clear of the typical sold price in this postcode.
£125,000
Modelled from EPC, postcode comparables.
£53,000
Recorded with HM Land Registry.
Sales timeline
26 October 2023Most recent
£53,000
Median price across the last 5 sales in CF42 5BP: £79,995 (2025–2023).
Nearby sales in CF42 5BP
68 Gwendoline Street, Treherbert, Treorchy, CF42 5BP
Sold May 2025
£86,50085 Gwendoline Street, Treherbert, Treorchy, CF42 5BP
Sold Aug 2023
£79,99591 Gwendoline Street, Treherbert, Treorchy, CF42 5BP
Sold Aug 2023
£85,00082 Gwendoline Street, Treherbert, Treorchy, CF42 5BP
Sold Feb 2023
£65,00079 Gwendoline Street, Treherbert, Treorchy, CF42 5BP
Sold Feb 2023
£76,000
Everything we know about 89 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
Years Held for 89 Gwendoline Street lags the street by a wide margin.
Price per m²
£609
Street avg £710
Floor Area
87 m²
Street avg 85 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.7 t/year
Street avg 5.5 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
Gwendoline Street — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.