12 St James Square, Monmouth, NP25 3DN
About 12 St James Square
12 St James Square is a four-bedroom property in Monmouth (NP25 3DN). It is a listed building, which means external alterations are tightly controlled but it may qualify for heritage tax reliefs. Period features are noted in the property record.
18 planning records sit against the property, 15 approved, 1 refused. Past consents include tree works, new windows, an annexe and partial demolition, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. Across 2017–2024, sale prices on this property compounded at 11.5% per year. Sold May 2024 for £770,000.
Know exactly what you're buying at 12 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
- Bedrooms4
- Bathrooms2
- EnsuiteYes
Outside
- Private gardenRear
- GarageDouble, Detached
Building
- Listed buildingYes
- Period featuresYes
- RefurbishedYes
Energy performance
No EPC on record
This property doesn't have an Energy Performance Certificate yet. An EPC is required to sell or let — and unlocks our automated valuation.
Planning history
Council records show a subdivision application — the property's legal arrangement has been altered.
- Jul 2025RenovationHeritageIn report
LBC - Internal alterations at first and second floor levels to form en-suite shower room, family bathroom and to improve access to loft void.
Listed- Documents
- 12 docs on file
- Reference
- DM/2025/00154
- Oct 2024Tree WorksTreesIn report
Pruning of large Ash tree in back garden - reduce by 20%
- Documents
- 5 docs on file
- Reference
- DM/2024/01206
We flagged 1 thing worth checking at 12 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
Latest sale on 12 St James Square was the highest on Land Registry record across the postcode.
£770,000
Growth on file: 11.5% per year over 7 years.
Sales timeline
14 May 2024Most recent
£770,000
+105.3%over 6 years28 September 2017
£375,000
Median price across the last 5 sales in NP25 3DN: £257,000 (2023–2011).
Nearby sales in NP25 3DN
Everything we know about 12 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

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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.