Overmonnow House, St Thomas Square, Monmouth, NP25 5ES
About Overmonnow House
Overmonnow House is a detached house in Monmouth (NP25 5ES). It has a recorded floor area of 347 m² (around 3735 sq ft) and construction records dating it to before 1900. The latest certificate (December 2024) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 79).
At 347 m² the property is well over the postcode median (47 m² across 12 EPCs), placing it in the larger end of the local stock.
Know exactly what you're buying at Overmonnow House
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
Overmonnow House's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
Overmonnow House has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at Overmonnow House
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
Overmonnow House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£798,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
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.
Median price across the last 5 sales in NP25 5ES: £152,000 (2025–2016).
Nearby sales in NP25 5ES
Flat 1, 9 St Thomas Square, Monmouth, NP25 5ES
Sold Jul 2025
£253,000Flat, 23 St Thomas Square, Monmouth, NP25 5ES
Sold Oct 2022
£135,00025 St Thomas Square, Monmouth, NP25 5ES
Sold Jan 2018
£152,00014 St Thomas Square, Monmouth, NP25 5ES
Sold Feb 2017
£332,50012 St Thomas Square, Monmouth, NP25 5ES
Sold Oct 2014
£400,000
Everything we know about Overmonnow House, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
Versus other St Thomas Square homes
Overmonnow House outperforms the street on floor area by a wide margin.
EPC Rating
58 (D)
Street avg 64 (D)
Floor Area
347 m²
Street avg 117 m²
CO₂ Emissions
15.0 t/year
Street avg 4.7 t/year
Habitable Rooms
13 rooms
Street avg 6 rooms
Similar properties nearby
The neighbourhood at a glance
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Cinderhill — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.