40 St Mary Street, Monmouth, NP25 3DD
About 40 St Mary Street
40 St Mary Street is a two-bedroom end-of-terrace house in Monmouth (NP25 3DD). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (May 2021) shows an E (score 53), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 89), a 3-band jump. Other recorded features include a loft. Period features are noted in the property record.
At 49 m² it sits well below the postcode median (121 m² across 9 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 78% of similar EPCs). Across 2021–2022, sale prices on this property compounded at 96.7% per year. On a £-per-square-foot basis, the last sale (£493/sq ft) was about 139.2% above the typical sold price in the postcode. Sold May 2022 for £260,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 40 St Mary Street
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
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
- LoftYes
Outside
- Private gardenYes
Building
- Period featuresYes
- RefurbishedYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
40 St Mary Street has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 2 things worth checking at 40 St Mary Street
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
- Recent ownership pattern worth a look
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Sales history & valuation
40 St Mary Street changed hands twice within eighteen months — unusual for the area.
£283,000
Modelled from EPC, postcode comparables and a sale-price growth of 96.7% per year over 1 year.
£260,000
Growth on file: 96.7% per year over 1 year.
Sales timeline
30 May 2022Most recent
£260,000
+96.7%over 7 months3 November 2021
£132,200
Median price across the last 5 sales in NP25 3DD: £510,000 (2024–2021).
Nearby sales in NP25 3DD
Everything we know about 40 St Mary Street, 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
- Recent ownership pattern worth a look

Versus other St Mary Street homes
Price per m² for 40 St Mary Street runs comfortably ahead of the street norm.
Price per m²
£5,306
Street avg £2,829
Floor Area
49 m²
Street avg 134 m²
Habitable Rooms
3 rooms
Street avg 6 rooms
CO₂ Emissions
3.7 t/year
Street avg 6.4 t/year
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The neighbourhood at a glance
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Monmouth School — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.