19 Gwendoline Street, Treherbert, Treorchy, CF42 5BN
About 19 Gwendoline Street
19 Gwendoline Street is a mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5BN). It has a recorded floor area of 81 m² (around 872 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (October 2019) shows a C (score 71). The rating has held steady at C across 2 certificates since March 2009. Between certificates, roof efficiency went from Average to Very Good; while lighting dropped from Very Good to Good. The recommended improvements would push it to B (score 86).
Across 2008–2021, sale prices on this property compounded at 7% per year. Today's modelled estimate of £117,000 is 46.3% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£92/sq ft) was about 86.1% above the typical sold price in the postcode. Last sale on file: £79,950 in February 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 19 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
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Planning history
19 Gwendoline Street has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 2 things worth checking at 19 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
- Recent ownership pattern worth a look
30-day money-back guarantee
Sales history & valuation
19 Gwendoline Street has more than doubled in price since the earliest registered sale in 2008.
£117,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.0% per year over 12 years.
£79,950
Growth on file: 7.0% per year over 12 years.
Sales timeline
12 February 2021Most recent
£79,950
+33.3%27 August 2020
£60,000
+71.4%over 11 years22 December 2008
£35,000
Median price across the last 5 sales in CF42 5BN: £67,000 (2024–2023).
Nearby sales in CF42 5BN
44 Gwendoline Street, Treherbert, Treorchy, CF42 5BN
Sold Sept 2024
£67,00029 Gwendoline Street, Treherbert, Treorchy, CF42 5BN
Sold Sept 2024
£71,00034 Gwendoline Street, Treherbert, Treorchy, CF42 5BN
Sold Jan 2024
£66,00024 Gwendoline Street, Treherbert, Treorchy, CF42 5BN
Sold Jul 2023
£79,99537 Gwendoline Street, Treherbert, Treorchy, CF42 5BN
Sold Jan 2023
£60,500
Everything we know about 19 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
- Recent ownership pattern worth a look

Versus other Gwendoline Street homes
On price per m², 19 Gwendoline Street stands well clear of the street.
Price per m²
£987
Street avg £677
Floor Area
81 m²
Street avg 82 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.6 t/year
Street avg 4.2 t/year
Similar properties nearby
1 Chapel Street, Blaenrhondda
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1 Bryn Wyndham Terrace, Treherbert
CF42 5NG
1 Church Street, Treherbert
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1 Bryn Henllan, Blaenrhondda
CF42 5SY
1 Abertonllwyd Street, Treherbert
CF42 5PF
1 Blaen Y Cwm Road, Blaencwm
CF42 5DG
1 Corbett Street, Treherbert
CF42 5EL
1 Cwmsaerbren Flats, Treherbert
CF42 5LA
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.