Treventon, Union Hill, St Columb, TR9 6AR
About Treventon
Treventon is a detached house in St Columb (TR9 6AR). It has a recorded floor area of 411 m² (around 4424 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (July 2024) 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 June 2014. Between certificates, roof efficiency went from Very Poor to Good; while hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 80), a 2-band jump.
At 411 m² the property is well over the postcode median (102 m² across 10 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs). Today's modelled estimate of £943,000 sits 50.9% above the 2016 sale of £625,000. On a £-per-square-foot basis, the last sale (£141/sq ft) was about 27.3% below the postcode norm. 8 planning records sit against the property, 1 approved, 0 refused. Past consents include a garage conversion, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations. Last sold in June 2016, so it's been off the market for around 10 years.
Energy performance
Treventon's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system changed
Roof insulation improved
More low energy lighting installed
Planning history
Treventon sits within a conservation area — exterior works face additional planning controls.
- Dec 2025Tree WorksTreesIn report
Works to Tree within a Conservation Area (TCA) - Lime - Remove.
Conservation Area- Documents
- 2 docs on file
- Reference
- PA25/09571
- Apr 2026Tree WorksTreesIn report
Works to trees within a conservation area: Removal of 1x Lime Tree (T1), Pollard of 1x Sycamore Tree (T2) and Re-pollarding of 1x Lime tree (T3).
Conservation Area- Documents
- 8 docs on file
- Reference
- PA26/01590
We flagged 1 thing worth checking at Treventon
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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Latest sale on Treventon was the highest on Land Registry record across the postcode.
£943,000
Modelled from EPC, postcode comparables.
£625,000
Recorded with HM Land Registry.
Sales timeline
22 June 2016Most recent
£625,000
Median price across the last 5 sales in TR9 6AR: £280,000 (2024–2021).
Versus other Union Hill homes
Floor Area for Treventon runs comfortably ahead of the street norm.
Price per m²
£1,521
Street avg £2,234
Floor Area
411 m²
Street avg 125 m²
Habitable Rooms
10 rooms
Street avg 5 rooms
CO₂ Emissions
20.0 t/year
Street avg 5.0 t/year
Similar properties nearby
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The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.5 km
Old Cattle Market — bus stop.
Closest school
0.6 km
St Columb Major Academy. 1 school nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
50.8dB

Night-time· 23:00 – 07:00
42.1dB







