20a, St Mary Street, Monmouth, NP25 3DB
About 20a
20a is a mid-terrace house in Monmouth (NP25 3DB). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to before 1900 and council tax band E. At 53 m² this is the 4th smallest of 29 units on EPC record in the building, where floor areas span 31–259 m². The building's EPC ratings span G to C across 29 units on file. The latest certificate (April 2025) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since April 2025. The recommended improvements would lift it to B (score 81), a 2-band jump. Main heating runs on electricity.
At 53 m² it sits well below the postcode median (80 m² across 28 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 20a
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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
20a has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 20a
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
20a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£239,000
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 3DB: £480,000 (2024–2022).
Nearby sales in NP25 3DB
6 St Mary Street, Monmouth, NP25 3DB
Sold May 2024
£245,0002 Angel Court, St Mary Street, Monmouth, NP25 3DB
Sold Jul 2023
£480,000St John Hall, St Mary Street, Monmouth, NP25 3DB
Sold Mar 2023
£504,52521 St Mary Street, Monmouth, NP25 3DB
Sold Nov 2022
£825,0008 St Mary Street, Monmouth, NP25 3DB
Sold Aug 2022
£182,500
Everything we know about 20a, 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 Mary Street homes
EPC Rating
67 (D)
Street avg 60 (D)
Floor Area
53 m²
Street avg 57 m²
CO₂ Emissions
3.1 t/year
Street avg 3.4 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Agincourt Square — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.