20 St James Street, Monmouth, NP25 3DL
About 20 St James Street
20 St James Street is a mid-terrace house in Monmouth (NP25 3DL). It has a recorded floor area of 404 m² (around 4349 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (November 2020) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in June 2012 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Poor to Very Good. The recommended improvements would push it to C (score 79).
At 404 m² the property is well over the postcode median (83 m² across 21 EPCs), placing it in the larger end of the local stock. 3 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Sold October 2023 for £795,000.
Know exactly what you're buying at 20 St James 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
Energy performance
20 St James Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
Heating controls upgraded for better temperature management
Single glazing replaced with double or better glazing
More low energy lighting installed
Planning history
- Oct 2019Tree WorksTreesIn report
Large lime tree adjacent to library.
- Documents
- 3 docs on file
- Reference
- DM/2019/01418
- Feb 2018ExtensionFullIn report
Extension: Side of property
Proposed replacement side extension and internal alterations.
- Documents
- 12 docs on file
- Reference
- DC/2016/01396
We flagged 1 thing worth checking at 20 St James 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
30-day money-back guarantee
Sales history & valuation
Latest sale on 20 St James Street was the highest on Land Registry record across the postcode.
£776,000
Modelled from EPC, postcode comparables.
£795,000
Recorded with HM Land Registry.
Sales timeline
8 October 2023Most recent
£795,000
Median price across the last 5 sales in NP25 3DL: £335,000 (2023–2019).
Nearby sales in NP25 3DL
11 St James Street, Monmouth, NP25 3DL
Sold May 2023
£335,00016a, St James Street, Monmouth, NP25 3DL
Sold Jan 2022
£350,00015 St James Street, Monmouth, NP25 3DL
Sold May 2021
£585,000Flat 1, 5 St James Street, Monmouth, NP25 3DL
Sold Aug 2019
£265,0004 St James Street, Monmouth, NP25 3DL
Sold Mar 2019
£290,000
Everything we know about 20 St James 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

Versus other St James Street homes
On years held, 20 St James Street runs well behind the street norm.
Price per m²
£1,968
Street avg £2,387
Floor Area
404 m²
Street avg 182 m²
Habitable Rooms
14 rooms
Street avg 7 rooms
CO₂ Emissions
15.0 t/year
Street avg 9.1 t/year
Similar properties nearby
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NP25 3HT
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1 Berryfield Park, Osbaston
NP25 3DQ
1 Chippenhamgate Street
NP25 3DH
1 Dixton Close
NP25 3PG
1 Church Farm, Wyesham
NP25 3GZ
1 Chaucer Way, Osbaston
NP25 3NR
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.