16 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
About 16 Llewellyn Street
16 Llewellyn Street is an end-of-terrace house in Treherbert, Treorchy, Treorchy (CF42 5BA). It has a recorded floor area of 104 m² (around 1119 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (May 2020) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in December 2014 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Very Good and window efficiency went from Average to Good. The recommended improvements would lift it to B (score 86), a 2-band jump.
At 104 m² the property is well over the postcode median (74 m² across 13 EPCs), placing it in the larger end of the local stock. Across 2001–2011, sale prices on this property compounded at 3.8% per year. Today's modelled estimate of £127,000 sits 261.8% above the 2011 sale of £35,100. On a £-per-square-foot basis, the last sale (£31/sq ft) was about 31.2% below the postcode norm. Last sold in October 2011, so it's been off the market for around 15 years.
Know exactly what you're buying at 16 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
16 Llewellyn Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Wall insulation improved
Loft insulation installed or upgraded to 250mm+
Window efficiency improved
Planning history
16 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 16 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
16 Llewellyn Street's modelled value sits at over four times its earliest registered sale price (2001).
£127,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.8% per year over 10 years.
£35,100
Growth on file: 3.8% per year over 10 years.
Sales timeline
3 October 2011Most recent
£35,100
+44.7%over 9 years21 November 2001
£24,250
Median price across the last 5 sales in CF42 5BA: £48,000 (2024–2008).
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
£35,0007 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
Sold Apr 2009
£35,00012 Llewellyn Street, Treherbert, Treorchy, CF42 5BA
Sold Oct 2008
£48,000
Everything we know about 16 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
Price per m² for 16 Llewellyn Street lags the street by a wide margin.
Price per m²
£338
Street avg £689
Floor Area
104 m²
Street avg 77 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
6.3 t/year
Street avg 4.5 t/year
Similar properties nearby
1 Collins Close, Treherbert
CF42 5NH
1 Delwyn Terrace, Blaencwm
CF42 5ED
1 Bute Street, Treherbert
CF42 5NP
1 Alma Street, Treherbert
CF42 5LY
1 Baglan Street, Treherbert
CF42 5AA
1 Charles Street, Treherbert
CF42 5HF
1 Cwmsaerbren Street, Treherbert
CF42 5HY
1 Ael Y Bryn, Treherbert
CF42 5HD
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.