Wonastow Mill, The Barn, Mitchel Troy, Monmouth, NP25 4BD
About Wonastow Mill
Wonastow Mill is a detached house in Mitchel Troy, Monmouth, Monmouth (NP25 4BD). It has a recorded floor area of 127 m² (around 1367 sq ft) and construction records dating it to before 1900. The latest certificate (January 2016) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72). Main heating runs on lpg. The latest certificate is from January 2016, so improvements made since then won't be reflected.
At 127 m² it sits well below the postcode median (236 m² across 5 EPCs), making it one of the more compact homes locally. Across 2017–2023, sale prices on this property compounded at 4.8% per year. Today's modelled estimate of £656,000 is 13.1% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£424/sq ft) was about 206.4% above the typical sold price in the postcode. Most recent transfer: May 2023 at £580,000.
Know exactly what you're buying at Wonastow Mill
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 05 Jan 2026
EPC Rating
Planning history
Wonastow Mill has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Wonastow Mill valuation sits well clear of the typical sold price in this postcode.
£656,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.8% per year over 6 years.
£580,000
Growth on file: 4.8% per year over 6 years.
Sales timeline
25 May 2023Most recent
£580,000
+30.3%over 5 years11 October 2017
£445,000
Median price across the last 5 sales in NP25 4BD: £450,000 (2024–2016).
Nearby sales in NP25 4BD
Brambles, Mitchel Troy, Monmouth, NP25 4BD
Sold Aug 2024
£685,000Troodos, Mitchel Troy, Monmouth, NP25 4BD
Sold Mar 2024
£225,000Brindavanam, Mitchel Troy, Monmouth, NP25 4BD
Sold Oct 2023
£700,0002 Trothy Grove, Mitchel Troy, Monmouth, NP25 4BD
Sold Sept 2021
£450,0001 Trothy Grove, Mitchel Troy, Monmouth, NP25 4BD
Sold Jul 2016
£256,000
Everything we know about Wonastow Mill, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus the street
Wonastow Mill outperforms the street on price per m² by a wide margin.
Price per m²
£4,567
Street avg £1,483
Floor Area
127 m²
Street avg 183 m²
Habitable Rooms
5 rooms
Street avg 7 rooms
CO₂ Emissions
2.7 t/year
Street avg 5.9 t/year
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The neighbourhood at a glance
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Glen Trothy — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.