9 Chester Close, St Mellons, Cardiff, CF3 0EP
About 9 Chester Close
9 Chester Close is a semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 0EP). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1991-1995 and council tax band C. The latest certificate (March 2025) shows a C (score 73). The rating has held steady at C across 2 certificates since July 2012. Between certificates, window efficiency went from Average to Good; while hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 90).
Untraded for 18 years, with the last transfer in October 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2000–2008, sale prices on this property compounded at 8.5% per year. Today's modelled estimate of £183,000 sits 117.9% above the 2008 sale of £84,000. On a £-per-square-foot basis, the last sale (£137/sq ft) was about 20.1% below the postcode norm.
Energy performance
EPC Rating
Certificate validity
Valid until 4 March 2035
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Window efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Planning history
9 Chester Close has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
9 Chester Close's modelled value sits at over four times its earliest registered sale price (2000).
£183,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.5% per year over 8 years.
£84,000
Growth on file: 8.5% per year over 8 years.
Sales timeline
2 October 2008Most recent
£84,000
+46.1%over 6 years28 March 2002
£57,500
+30.8%over 1 year30 October 2000
£43,950
Median price across the last 5 sales in CF3 0EP: £180,000 (2026–2020).
Nearby sales in CF3 0EP
6 Chester Close, St Mellons, Cardiff, CF3 0EP
Sold Mar 2026
£240,00012 Chester Close, St Mellons, Cardiff, CF3 0EP
Sold Feb 2025
£180,00014 Chester Close, St Mellons, Cardiff, CF3 0EP
Sold Feb 2024
£193,3257 Chester Close, St Mellons, Cardiff, CF3 0EP
Sold Nov 2022
£160,0005 Chester Close, St Mellons, Cardiff, CF3 0EP
Sold Jan 2020
£175,000
Versus other Chester Close homes
On floor area, 9 Chester Close runs well behind the street norm.
Price per m²
£1,474
Street avg £2,398
Floor Area
57 m²
Street avg 72 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
1.8 t/year
Street avg 2.6 t/year
Similar properties nearby
1 Caerleon Close, St Mellons
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1 Ashfield Court, St Mellons
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1 Bulrush Close, St Mellons
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1 Blaina Close, St Mellons
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1 Aspen Close, St Mellons
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1 Caspian Close, St Mellons
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1 Broadwell Close, St Mellons
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The neighbourhood at a glance
Crime
242/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Coleford Drive — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







