25 St James Square, Monmouth, NP25 3DN
About 25 St James Square
25 St James Square is a three-bedroom end-of-terrace house in Monmouth (NP25 3DN). It has a recorded floor area of 129 m² (around 1389 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (September 2019) shows a D (score 58), a step below the typical UK home. When first surveyed in February 2011 the rating was F, 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 Very Poor to Very Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump.
Across 1996–2015, sale prices on this property compounded at 5% per year. Today's modelled estimate of £409,000 sits 59.1% above the 2015 sale of £257,000. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension and new windows, meaningful when judging how the property has evolved. Last sold in December 2015, so it's been off the market for around 10 years.
Know exactly what you're buying at 25 St James 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
- Bedrooms3
- Bathrooms2
- EnsuiteYes
Outside
- Private gardenYes
- GarageYes
Energy performance
25 St James Square's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Roof insulation improved
More low energy lighting installed
Planning history
25 St James Square has been through 4 approved planning applications — a well-evolved property.
- Aug 2018ExtensionHeritageIn report
Extension and alterations to existing dwelling.
- Documents
- 22 docs on file
- Reference
- DC/2017/01461
- Jul 2018ExtensionFullIn report
Extension and alterations to existing dwelling.
- Documents
- 38 docs on file
- Reference
- DC/2017/01460
We flagged 1 thing worth checking at 25 St James 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
25 St James Square has more than doubled in price since the earliest registered sale in 1996.
£409,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.0% per year over 19 years.
£257,000
Growth on file: 5.0% per year over 19 years.
Sales timeline
11 December 2015Most recent
£257,000
+157.0%over 19 years27 June 1996
£100,000
Median price across the last 5 sales in NP25 3DN: £375,000 (2024–2015).
Nearby sales in NP25 3DN
Everything we know about 25 St James 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 James Square homes
Price per m²
£1,992
Street avg £3,077
Floor Area
129 m²
Street avg 128 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
6.5 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
Rolls Hall — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.