4 St John Street, Monmouth, NP25 3EA
About 4 St John Street
4 St John Street is a three-bedroom mid-terrace house in Monmouth (NP25 3EA). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (November 2024) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in December 2021 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Very Good and window efficiency went from Very Poor to Poor. The recommended improvements would lift it to B (score 89), a 2-band jump.
One historical planning record sits against the property in 2023. The record references listed-building consent, which constrain future alterations. Across 2001–2021, sale prices on this property compounded at 6% per year. Today's modelled estimate of £314,000 is 12.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£296/sq ft) was about 22.9% above the typical sold price in the postcode. At 88 m² it's 29.6% smaller than the typical home in the postcode (125 m² median across 4 EPCs). Most recent transfer: September 2021 at £280,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 4 St John 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
- Bedrooms3
- Bathrooms2
- Dining roomYes
- CloakroomYes
Outside
- Private gardenYes
Building
- Central heatingYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
4 St John Street has a listed-building consent on record — alterations to a listed property are tightly controlled.
- Mar 2023RenovationHeritageIn report
Listed Building consent for a replacement roof covering.
Listed- Documents
- 17 docs on file
- Reference
- DM/2022/01703
We flagged 1 thing worth checking at 4 St John 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
4 St John Street has more than tripled in price since its earliest registered sale in 2001.
£314,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.0% per year over 21 years.
£280,000
Growth on file: 6.0% per year over 21 years.
Sales timeline
12 September 2021Most recent
£280,000
+16.7%over 11 years18 December 2009
£240,000
+182.4%over 8 years9 February 2001
£85,000
Median price across the last 5 sales in NP25 3EA: £290,000 (2024–2006).
Everything we know about 4 St John 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 John Street homes
4 St John Street outperforms the street on epc rating by a wide margin.
EPC Rating
64 (D)
Street avg 63 (D)
Floor Area
88 m²
Street avg 110 m²
CO₂ Emissions
4.0 t/year
Street avg 4.7 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
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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
Agincourt Square — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.