30 Gwendoline Street, Treherbert, Treorchy, CF42 5BN
About 30 Gwendoline Street
30 Gwendoline Street is a four-bedroom mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5BN). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (December 2014) shows a C (score 76), near the top of the C band. When first surveyed in February 2014 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 Very Poor to Good and window efficiency went from Average to Good. The recommended improvements would push it to B (score 88). The latest certificate is from December 2014, so improvements made since then won't be reflected.
Across 2003–2014, sale prices on this property compounded at 4.4% per year. Today's modelled estimate of £124,000 sits 287.5% above the 2014 sale of £32,000. On a £-per-square-foot basis, the last sale (£33/sq ft) was about 36.1% below the postcode norm. Last changed hands 12 years ago, in April 2014.
Know exactly what you're buying at 30 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
- Bathrooms1
Energy performance
30 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This certificate is over 10 years old and is no longer valid.Expired 15 Dec 2024
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
Loft insulation installed or upgraded to 250mm+
Floor insulation added or improved
More low energy lighting installed
Planning history
30 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 30 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
30 Gwendoline Street's modelled value sits at over four times its earliest registered sale price (2003).
£124,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.4% per year over 11 years.
£32,000
Growth on file: 4.4% per year over 11 years.
Sales timeline
15 April 2014Most recent
£32,000
-3.0%over 10 years30 January 2004
£33,000
+67.1%over 12 months13 February 2003
£19,750
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 30 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
Price per m² for 30 Gwendoline Street lags the street by a wide margin.
Price per m²
£360
Street avg £710
Floor Area
89 m²
Street avg 82 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.1 t/year
Street avg 4.2 t/year
Similar properties nearby
1 Crichton Street, Treherbert
CF42 5RA
1 Coldra Road, Treherbert
CF42 5ST
1 David Street, Treherbert
CF42 5LB
1 Brynfedwen Close, Treherbert
CF42 5PB
1 Cwrt Yr Ysgol, Treherbert
CF42 5PX
1 Blaen Y Cwm Terrace, Treherbert
CF42 5ND
1 Brook Street, Blaenrhondda
CF42 5SG
1 Alma Street, Treherbert
CF42 5LY
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.