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Get startedTrethowel Mill is a five-bedroom detached house in Trethowel, St. Austell, St Austell (PL25 5RR). It has a recorded floor area of 238 m² (around 2562 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (January 2024) shows an E (score 53), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since March 2013. Between certificates, roof efficiency went from Very Poor to Average, window efficiency went from Poor to Good and lighting went from Poor to Very Good. The recommended improvements would lift it to B (score 90), a 3-band jump. Main heating runs on oil. Other recorded features include attached land beyond the plot. Period features are noted in the property record.
Today's modelled estimate of £721,000 sits 50.2% above the 2015 sale of £479,950. 3 planning records sit against the property, 1 approved, 2 refused. Past consents include an extension and a porch, meaningful when judging how the property has evolved. Last changed hands 11 years ago, in October 2015.
Trethowel Mill's carbon output runs well above what efficient homes in the postcode produce.
Woodland garden
Trethowel Mill valuation sits well clear of the typical sold price in this postcode.
£721,000
Modelled from EPC, postcode comparables.
£479,950
Recorded with HM Land Registry.
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km

Daytime· 07:00 – 23:00
44.5dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
Roof insulation improved
Floor insulation added or improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Proposed porch and outbuildings
1 more application for this property
Join to see all planning history.
30 October 2015Most recent
£479,950
Median price across the last 5 sales in PL25 5RR: £412,500 (2022–2010).
PL25 5SH
Railway Terrace — bus stop.
Closest school
0.8 km
Cornwall College. 10 schools nearby.
Night-time· 23:00 – 07:00
37.6dB
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