20 Duchess Road, Osbaston, Monmouth, NP25 3HT
About 20 Duchess Road
20 Duchess Road is a three-bedroom detached house in Osbaston, Monmouth, Monmouth (NP25 3HT). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 1967-1975 and council tax band E. The latest certificate (August 2021) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 85), a 2-band jump. Other recorded features include notable views. Our model identifies extension potential, subject to local planning policy.
At 91 m² it sits well below the postcode median (141 m² across 24 EPCs), making it one of the more compact homes locally. One planning record on file: an extension approved in 2022. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. Today's modelled estimate of £439,000 is 20.3% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£373/sq ft) was about 60.8% above the typical sold price in the postcode. Last sale on file: £365,000 in December 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 20 Duchess Road
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 gardenRear
- GarageYes
- Notable viewsYes
Building
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Jul 2022DemolitionFullIn report
Extension: Two storey
Demolition of existing attached greenhouse, garage and porch. Construction of two storey extension, associated internal alterations and replacement of existing PVCU cladding with fibre cement weatherboard. Formation of permeable parking area.
Extension- Documents
- 12 docs on file
- Reference
- DM/2022/00847
We flagged 1 thing worth checking at 20 Duchess Road
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
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£439,000
Modelled from EPC, postcode comparables.
£365,000
Recorded with HM Land Registry.
Sales timeline
20 December 2021Most recent
£365,000
Median price across the last 5 sales in NP25 3HT: £370,000 (2025–2023).
Nearby sales in NP25 3HT
4 Duchess Road, Osbaston, Monmouth, NP25 3HT
Sold Jul 2025
£767,00045 Duchess Road, Osbaston, Monmouth, NP25 3HT
Sold Feb 2025
£360,00039 Duchess Road, Osbaston, Monmouth, NP25 3HT
Sold Jan 2025
£366,00031 Duchess Road, Osbaston, Monmouth, NP25 3HT
Sold May 2024
£405,00024 Duchess Road, Osbaston, Monmouth, NP25 3HT
Sold Oct 2023
£370,000
Everything we know about 20 Duchess Road, 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 Duchess Road homes
20 Duchess Road outperforms the street on price per m² by a wide margin.
Price per m²
£4,011
Street avg £2,855
Floor Area
91 m²
Street avg 143 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
3.8 t/year
Street avg 4.8 t/year
Similar properties nearby
1 Duchess Close, Osbaston
NP25 3JL
1 Greenlands Close, Wyesham
NP25 3LP
1 Chestnut Court, Wyesham
NP25 3TP
1 Dixton Close
NP25 3PG
1 Church Farm, Wyesham
NP25 3GZ
1 Charles Close, Osbaston
NP25 3JD
1 Almshouse Street
NP25 3DE
1 Chippenhamgate Street
NP25 3DH
The neighbourhood at a glance
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Duchess Close — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.