21 Hopkin Street, Treherbert, Treorchy, CF42 5HL
About 21 Hopkin Street
21 Hopkin Street is a two-bedroom mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5HL). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (January 2019) shows a C (score 69), just inside the C band. When first surveyed in March 2013 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Average; while lighting dropped from Good to Very Poor. The recommended improvements would push it to B (score 87). Other recorded features include outbuildings.
Held since April 2001 — that's 25 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £113,000 sits 318.5% above the 2001 sale of £27,000. On a £-per-square-foot basis, the last sale (£37/sq ft) was about 39.5% below the postcode norm. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs).
Know exactly what you're buying at 21 Hopkin 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
- Bedrooms2
- Dining roomYes
Outside
- OutbuildingsYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded, improving insulation
Low energy lighting percentage decreased
Planning history
21 Hopkin Street has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 21 Hopkin 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
21 Hopkin Street's modelled value sits at over four times its earliest registered sale price (2001).
£113,000
Modelled from EPC, postcode comparables.
£27,000
Recorded with HM Land Registry.
Sales timeline
3 April 2001Most recent
£27,000
Median price across the last 5 sales in CF42 5HL: £95,000 (2024–2019).
Nearby sales in CF42 5HL
29 Hopkin Street, Treherbert, Treorchy, CF42 5HL
Sold Jun 2024
£65,50026 Hopkin Street, Treherbert, Treorchy, CF42 5HL
Sold May 2023
£108,00023 Hopkin Street, Treherbert, Treorchy, CF42 5HL
Sold Oct 2021
£95,00022 Hopkin Street, Treherbert, Treorchy, CF42 5HL
Sold Aug 2021
£99,95019 Hopkin Street, Treherbert, Treorchy, CF42 5HL
Sold Dec 2019
£70,000
Everything we know about 21 Hopkin 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 Hopkin Street homes
21 Hopkin Street outperforms the street on co₂ emissions by a wide margin.
Price per m²
£403
Street avg £800
Floor Area
67 m²
Street avg 81 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
3.3 t/year
Street avg 5.0 t/year
Similar properties nearby
1 Brook Street, Blaenrhondda
CF42 5SG
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 Blaen Y Cwm Terrace, Treherbert
CF42 5ND
1 Abertonllwyd Street, Treherbert
CF42 5PF
1 Blaen Y Cwm Road, Blaencwm
CF42 5DG
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
Baglan Hotel — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.