6 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
About 6 Llewellyn Street
6 Llewellyn Street is a mid-terrace house in Treherbert, Treorchy, Treorchy (CF42 5BA). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (March 2015) shows an E (score 46), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since October 2013. Between certificates, roof efficiency dropped from Good to Very Poor and lighting dropped from Very Good to Good. The recommended improvements would lift it to C (score 79), a 2-band jump. The latest certificate is from March 2015, so improvements made since then won't be reflected.
It lags the bulk of the postcode on energy efficiency (less efficient than 85% of similar EPCs).
Know exactly what you're buying at 6 Llewellyn 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
6 Llewellyn Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 20 Mar 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Low energy lighting percentage decreased
Planning history
6 Llewellyn Street has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 1 thing worth checking at 6 Llewellyn 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
6 Llewellyn Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£113,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF42 5BA: £35,100 (2024–2009).
Nearby sales in CF42 5BA
4 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
Sold Nov 2024
£110,0009 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
Sold Jun 2021
£96,0008 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
Sold Jun 2014
£35,00016 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
Sold Oct 2011
£35,1007 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
Sold Apr 2009
£35,000
Everything we know about 6 Llewellyn 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 Llewellyn Street homes
On epc rating, 6 Llewellyn Street runs well behind the street norm.
EPC Rating
46 (E)
Street avg 63 (D)
Floor Area
67 m²
Street avg 80 m²
CO₂ Emissions
6.3 t/year
Street avg 4.5 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
Similar properties nearby
1 Abertonllwyd Street, Treherbert
CF42 5PF
1 Blaen Y Cwm Road, Blaencwm
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
Penyrenglyn School — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.