18 Cosin Close, Oxford, OX4 1GD
About 18 Cosin Close
18 Cosin Close is a mid-terrace house in Oxford (OX4 1GD). It has a recorded floor area of 103 m² (around 1109 sq ft), construction records dating it to 1996-2002 and council tax band D. The latest certificate (May 2023) shows a C (score 74). The recommended improvements would push it to B (score 85).
Held since December 2000 — that's 25 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. 2 planning records sit against the property, 1 approved, 0 refused, 1 pending. Past consents include an extension, meaningful when judging how the property has evolved. An active application for an extension is awaiting a decision. At 103 m² the property is well over the postcode median (79 m² across 23 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £496,000 sits 363.6% above the 2000 sale of £107,000. On a £-per-square-foot basis, the last sale (£97/sq ft) was about 64.4% below the postcode norm.
Know exactly what you're buying at 18 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
EPC Rating
Planning history
An application for a part-single-part-two-storey rear extension is currently awaiting a decision.
- Mar 2026ExtensionFullIn report
Extension: Part single, part two storey · Rear of property
Erection of a part single, part two storey rear extension.
- Documents
- 6 docs on file
- Reference
- 26/00835/FUL
- Jul 2024ExtensionFullIn report
Extension: Part single, part two storey · Rear of property
Erection of a part single part two storey rear extension.
- Documents
- 14 docs on file
- Reference
- 24/01314/FUL
We flagged 2 things worth checking at 18 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
18 Cosin Close's modelled value sits at over four times its earliest registered sale price (2000).
£496,000
Modelled from EPC, postcode comparables.
£107,000
Recorded with HM Land Registry.
Sales timeline
5 December 2000Most recent
£107,000
Median price across the last 5 sales in OX4 1GD: £230,730 (2025–2001).
Everything we know about 18 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
Price per m² for 18 Cosin Close lags the street by a wide margin.
Price per m²
£1,039
Street avg £2,819
Floor Area
103 m²
Street avg 82 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
2.9 t/year
Street avg 2.8 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