Skip to content
UK Property Looker

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
Overview

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 48% above the typical sold price in the postcode. Sold July 2023 for £375,000.

Specifications

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
£14.99one-off

30-day money-back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

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

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

Planning

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.

Notable planning nearby

10applications of note in the surrounding area

Before you offer

We flagged 2 things worth checking at 21 Castle Mews

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.

  • Signs of HMO activity in the area
  • Larger development activity nearby
£14.99

30-day money-back guarantee

Price

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

£377,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2023)

£375,000

Recorded with HM Land Registry.

Sales timeline

  1. 13 July 2023Most recent

    £375,000

Median price across the last 5 sales in OX1 1JR: £385,000 (2025–2022).

On the street

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 £6,227

On par

Floor Area

57 m²

Street avg 60 m²

On par

Habitable Rooms

3 rooms

Street avg 3 rooms

On par

CO₂ Emissions

3.2 t/year

Street avg 2.9 t/year

Below
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
£14.99one-off

30-day money-back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£404k

1 Castle Mews, St Thomas Street

OX1 1JR

2 bed1 bath
£450k

1 Rowland Hill Court, Osney Lane

OX1 1LE

2 bed2 bath
£460k

1 Tidmarsh Lane

OX1 1AZ

2 bed2 bath
£374k

1 Venneit Close

OX1 1HZ

3 bed2 bath
£256k

1 Abbey Walk, Osney Lane

OX1 1NN

1 bed1 bath
£781k

1 Dale Close

OX1 1TU

3 bed2 bath
£385k

1 Swan Court, Paradise Street

OX1 1JB

£724k

1 Shirelake Close

OX1 1SN

4 bed
Area

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.
Full Oxford report

Rail-style transport is unusually close for this postcode.

Crime

6/mo

Rising 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

The full report breaks down crime, transport links, schools and air quality in depth.

Noise

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 road noise heatmap for OX1 1JR

Daytime· 07:00 – 23:00

52.5dB

Low
Night-time road noise heatmap for OX1 1JR

Night-time· 23:00 – 07:00

43.5dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
FAQ

Common 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.