16 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
About 16 Gwendoline Street
16 Gwendoline Street is a mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5BW). It has a recorded floor area of 58 m² (around 622 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (June 2011) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2008. Between certificates, roof efficiency went from Poor to Good and lighting went from Very Poor to Good. The recommended improvements would push it to C (score 69). The latest certificate is from June 2011, so improvements made since then won't be reflected.
Across 2009–2011, sale prices on this property compounded at -11.7% per year. Today's modelled estimate of £113,000 sits 186.1% above the 2011 sale of £39,500. On a £-per-square-foot basis, the last sale (£64/sq ft) was about 31.9% above the typical sold price in the postcode. At 58 m² it sits well below the postcode median (92 m² across 23 EPCs), making it one of the more compact homes locally. On the market in July 2011 and unlisted since — roughly 15 years.
Know exactly what you're buying at 16 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
16 Gwendoline Street's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Jun 2021
EPC Rating
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
16 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 16 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
16 Gwendoline Street valuation sits well clear of the typical sold price in this postcode.
£113,000
Modelled from EPC, postcode comparables and a sale-price growth of -11.7% per year over 2 years.
£39,500
Growth on file: -11.7% per year over 2 years.
Sales timeline
21 July 2011Most recent
£39,500
-21.0%over 1 year26 August 2009
£50,000
Median price across the last 5 sales in CF42 5BW: £65,500 (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
£35,0004 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Jan 2023
£216,00093 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Mar 2022
£65,50095 Gwendoline Street, Treherbert, Treorchy, CF42 5BW
Sold Dec 2019
£65,000
Everything we know about 16 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
Floor Area for 16 Gwendoline Street lags the street by a wide margin.
Price per m²
£684
Street avg £726
Floor Area
58 m²
Street avg 95 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
2.7 t/year
Street avg 5.3 t/year
Similar properties nearby
1 Abertonllwyd Street, Treherbert
CF42 5PF
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CF42 5DG
1 Brook Street, Blaenrhondda
CF42 5SG
1 Chapel Street, Blaenrhondda
CF42 5SE
1 Bryn Wyndham Terrace, Treherbert
CF42 5NG
1 Church Street, Treherbert
CF42 5PU
1 Bryn Henllan, Blaenrhondda
CF42 5SY
1 Corbett Street, Treherbert
CF42 5EL
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.