23 Cosin Close, Oxford, OX4 1GD
About 23 Cosin Close
23 Cosin Close is a mid-terrace house in Oxford (OX4 1GD). It has a recorded floor area of 93 m² (around 1001 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (December 2017) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since January 2012. Between certificates, roof efficiency dropped from Good to Average and window efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 87), a 2-band jump.
It hasn't traded since August 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 93 m² it's 17.7% larger than the typical home in the postcode (79 m² median across 23 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £398,000 sits 134.1% above the 2008 sale of £170,000. On a £-per-square-foot basis, the last sale (£170/sq ft) was about 37.4% below the postcode norm.
Know exactly what you're buying at 23 Cosin Close
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
Energy performance
23 Cosin Close sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Loft insulation upgraded to recommended levels
Planning history
23 Cosin Close has no planning applications on record.
Notable planning nearby
63applications of note in the surrounding area
We flagged 2 things worth checking at 23 Cosin Close
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
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Sales history & valuation
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£398,000
Modelled from EPC, postcode comparables.
£170,000
Recorded with HM Land Registry.
Sales timeline
25 August 2008Most recent
£170,000
Median price across the last 5 sales in OX4 1GD: £230,730 (2025–2000).
Everything we know about 23 Cosin Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby
Versus other Cosin Close homes
23 Cosin Close is notably below the street on epc rating.
Price per m²
£1,828
Street avg £2,622
Floor Area
93 m²
Street avg 82 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
4.5 t/year
Street avg 2.7 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
East Avenue — bus stop.
Closest school
0.3 km
East Oxford Primary School. 27 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
50.2dB
Night-time· 23:00 – 07:00
40.2dB