Model valuation£417,0008 Busby Close
Local market context
21 Castle Mews, St Thomas Street, Oxford, OX1 1JR
Property type
Semi-detached
Floor Ground
Bedrooms
2
Bathroom
1
Floor area
57 m²
614 sq ft
Energy rating
D
Score 66
Tenure
Owner Occupied
About 21 Castle Mews
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21 Castle Mews is a two-bedroom semi-detached house in Oxford (OX1 1JR). It has a recorded floor area of 57 m² (around 614 sq ft) and construction records dating it to 1991-1995. The latest certificate (January 2020) shows a D (score 66), on the cusp of jumping into the C band. Earlier certificates rated it C (February 2010); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Good and main heating went from Poor to Average; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 78). Main heating runs on electricity. At 57 m² this is the 11th 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 (£611/sq ft) was about 45.3% above the typical sold price in the postcode. Sold July 2023 for £375,000.
What this property has
Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
Outside
- Communal gardenYes
- ParkingAllocated
Before you decide
Everything you need to know about 21 Castle Mews
The true value, the hidden risks and the full sale history, in one report.
Signs of HMO activity in the areaLarger development activity nearby
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The data behind every report
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 2)
Jan 2020
EPC Rating
A
B
C
D
D66
E
F
G
Main Heating
Electric
Main Fuel
Electric
Hot Water
Very Poor
Windows
Average
CO2 Emissions
3.2 t/year
Occupancy
Owner Occupied
Certificate validity
Valid until 15 January 2030
Property Improvements
Changes detected from historical EPC data
Jan 2020from Feb 2010
EPC improved fromC69toD66
Hot Water
AverageVery Poor
Hot water efficiency decreased
Low Energy Lighting
0%67%
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Late 20th centuryGround Floor FlatEPC DNo mains gas
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
Applications and permits filed against 21 Castle Mews, St Thomas Street, Oxford, OX1 1JR, sourced from the PlanIt planning register.
21 Castle Mews has no planning applications on record.
10
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
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
21 Castle Mews valuation sits well clear of the typical sold price in this postcode.
Current estimate
See how we calculated this£403,000
Modelled from EPC, postcode comparables.
Last sold (2023)
£375,000
Recorded with HM Land Registry.
Sales timeline
13 July 2023Most recent
£375,000
Median price across the last 5 sales in OX1 1JR: £391,000 (2025–2022).
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
£440,00020 Castle Mews, St Thomas Street, Oxford, OX1 1JR
Sold Sept 2022
£385,000
Versus other St Thomas Street homes
Four headline reads against 26 similar flats on this street, drawn from the latest EPC and Land Registry data.
21 Castle Mews is notably below the street on years held.
Price per m²
£6,579
Street avg £6,266
Floor Area
57 m²
Street avg 60 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
3.2 t/year
Street avg 2.9 t/year
Property research, connected
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Start your researchSimilar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£394k
1 Castle Mews, St Thomas Street
OX1 1JR
2 bed1 bath
£428k
1 Tidmarsh Lane
OX1 1AZ
2 bed2 bath
£450k
1 Rowland Hill Court, Osney Lane
OX1 1LE
2 bed2 bath
£375k
1 Venneit Close
OX1 1HZ
3 bed2 bath
£240k
1 Abbey Walk, Osney Lane
OX1 1NN
1 bed1 bath
£715k
1 Dale Close
OX1 1TU
3 bed2 bath
£422k
1 Swan Court, Paradise Street
OX1 1JB
£729k
1 Shirelake Close
OX1 1SN
4 bed
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Oxford district page.
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
Modelled day and night-time noise levels around OX1 1JR from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
52.5dB
Night-time· 23:00 – 07:00
43.5dB
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4Common questions
The questions buyers, sellers and homeowners most often ask about 21 Castle Mews, St Thomas Street, Oxford, OX1 1JR. Each answer is also embedded as structured data for search engines.