20 Castle Mews, St Thomas Street, Oxford, OX1 1JR
About 20 Castle Mews
20 Castle Mews is a semi-detached house in Oxford (OX1 1JR). It has a recorded floor area of 56 m² (around 603 sq ft) and construction records dating it to 1996-2002. The latest certificate (April 2019) shows a C (score 73). The rating has held steady at C across 2 certificates since May 2009. Between certificates, lighting went from Poor to Very Good. Main heating runs on electricity. At 56 m² this is the 10th smallest of 27 units on EPC record in the building, where floor areas span 45–86 m². The building's EPC ratings span E to B across 27 units on file.
On a £-per-square-foot basis, the last sale (£639/sq ft) was about 51.9% above the typical sold price in the postcode. Most recent transfer: September 2022 at £385,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about 20 Castle Mews
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
EPC Rating
Certificate validity
Valid until 15 April 2029
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
20 Castle Mews has no planning applications on record.
But the area is active
10 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£377,000
Modelled from EPC, postcode comparables.
£385,000
Recorded with HM Land Registry.
Sales timeline
8 September 2022Most recent
£385,000
Median price across the last 5 sales in OX1 1JR: £391,000 (2025–2023).
Nearby sales in OX1 1JR
3 Castle Mews, St Thomas Street, Oxford, OX1 1JR
Sold Nov 2025
£400,0009 Castle Mews, St Thomas Street, Oxford, OX1 1JR
Sold Aug 2025
£380,00018 Castle Mews, St Thomas Street, Oxford, OX1 1JR
Sold Mar 2025
£391,00016 Castle Mews, St Thomas Street, Oxford, OX1 1JR
Sold Sept 2023
£440,00021 Castle Mews, St Thomas Street, Oxford, OX1 1JR
Sold Jul 2023
£375,000
Versus other St Thomas Street homes
20 Castle Mews is notably below the street on years held.
Price per m²
£6,875
Street avg £6,253
Floor Area
56 m²
Street avg 60 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
2.8 t/year
Street avg 2.9 t/year
Everything you need to know about 20 Castle Mews
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
286/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Park End Street — bus stop.
Closest school
0.3 km
Activate Learning. 17 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
52.5dB
Night-time· 23:00 – 07:00
43.5dB