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Get started15 William Street is a mid-terrace house in Brynna, Pontyclun, Pontyclun (CF72 9QJ). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (January 2014) shows an E (score 44), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since August 2013. Between certificates, lighting dropped from Good to Very Poor. The recommended improvements would lift it to B (score 84), a 3-band jump. The latest certificate is from January 2014, so improvements made since then won't be reflected.
At 109 m² it's 21.1% larger than the typical home in the postcode (90 m² median across 29 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 72% of similar EPCs).
15 William Street's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 25 Jan 2024
15 William Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£215,000
Modelled from EPC, postcode comparables.
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.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
On co₂ emissions, 15 William Street runs well behind the street norm.
EPC Rating
44 (E)
Street avg 58 (D)
Floor Area
109 m²
Street avg 98 m²
CO₂ Emissions
7.0 t/year
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Eagle Hotel — bus stop.
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Low energy lighting percentage decreased
Are we missing something? Tell us about home improvements to help adjust your valuation.
Median price across the last 5 sales in CF72 9QJ: £151,000 (2023–2019).
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Street avg 4.8 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms