27 St Thomas Square, Monmouth, NP25 5ES
About 27 St Thomas Square
27 St Thomas Square is a one-bedroom mid-terrace house in Monmouth (NP25 5ES). It has a recorded floor area of 39 m² (around 420 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (December 2023) shows a C (score 71). When first surveyed in November 2012 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Average, hot-water efficiency went from Average to Good and lighting went from Good to Very Good. The recommended improvements would push it to B (score 90). Period features are noted in the property record.
Last sold in January 2013, so it's been off the market for around 13 years. Across the public record there are 4 sales, relatively high churn for a single property. Across 1997–2013, sale prices on this property compounded at 8.2% per year. Today's modelled estimate of £176,000 is 41.9% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£295/sq ft) was about 81.6% above the typical sold price in the postcode. At 39 m² it's 25% smaller than the typical home in the postcode (52 m² median across 12 EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.
Know exactly what you're buying at 27 St Thomas Square
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
- Bedrooms1
- Bathrooms1
- FireplaceYes
Outside
- Private gardenRear
Building
- Period featuresYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Roof insulation improved
More low energy lighting installed
Planning history
27 St Thomas Square has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 27 St Thomas Square
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
27 St Thomas Square has more than tripled in price since its earliest registered sale in 1997.
£176,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.2% per year over 16 years.
£124,000
Growth on file: 8.2% per year over 16 years.
Sales timeline
10 January 2013Most recent
£124,000
+69.9%over 10 years6 December 2002
£73,000
+84.8%over 3 years22 June 1999
£39,500
+12.9%over 2 years13 January 1997
£35,000
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 27 St Thomas Square, 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
27 St Thomas Square outperforms the street on price per m² by a wide margin.
Price per m²
£3,179
Street avg £2,099
Floor Area
39 m²
Street avg 168 m²
Habitable Rooms
4 rooms
Street avg 8 rooms
CO₂ Emissions
1.7 t/year
Street avg 7.0 t/year
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The neighbourhood at a glance
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Cinderhill — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.