4 Old Barn, Costow, Swindon, SN4 9QN
About 4 Old Barn
4 Old Barn is a detached house in Costow, Swindon, Swindon (SN4 9QN). It has a recorded floor area of 207 m² (around 2228 sq ft) and construction records dating it to 2022. The latest certificate (January 2022) shows a C (score 71). The recommended improvements would push it to B (score 88). Main heating runs on oil: heating oil.
At 207 m² the property is well over the postcode median (113 m² across 5 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £1,195,000 is 19.5% above the 2022 sale price. Sold December 2022 for £1,000,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
4 Old Barn's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
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Planning history
4 Old Barn has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Latest sale on 4 Old Barn was the highest on Land Registry record across the postcode.
£1,195,000
Modelled from EPC, postcode comparables.
£1,000,000
Recorded with HM Land Registry.
Sales timeline
5 December 2022Most recent
£1,000,000
Median price across the last 5 sales in SN4 9QN: £430,000 (2022–2003).
Nearby sales in SN4 9QN
4a, Costow, Swindon, SN4 9QN
Sold Nov 2022
£925,0003 Costow Farm Cottages, Costow, Swindon, SN4 9QN
Sold Dec 2021
£430,000Willow Cottage, Costow, Swindon, SN4 9QN
Sold Aug 2019
£396,0003a The Bungalow, Costow, Swindon, SN4 9QN
Sold Jan 2006
£450,0001 Costow Farm Cottages, Costow, Swindon, SN4 9QN
Sold Apr 2003
£236,000
Versus the street
Years Held for 4 Old Barn lags the street by a wide margin.
Price per m²
£4,831
Street avg £4,544
Floor Area
207 m²
Street avg 120 m²
CO₂ Emissions
6.1 t/year
Street avg 5.5 t/year
Years Held
3 years
Street avg 10 years
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.7 km
Hay Lane — bus stop.
Closest school
1.4 km
Millbrook Primary School. 10 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
54.5dB

Night-time· 23:00 – 07:00
46.2dB







