Rhosyn Gwyn, St Peters Crescent, Peterstone Wentlooge, Cardiff, CF3 2TR
About Rhosyn Gwyn
Rhosyn Gwyn is a detached house in Peterstone Wentlooge, Cardiff, Cardiff (CF3 2TR). It has a recorded floor area of 247 m² (around 2659 sq ft), construction records dating it to 1996-2002 and council tax band H. The latest certificate (May 2020) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since September 2009. The recommended improvements would push it to C (score 74). Main heating runs on oil.
At 247 m² the property is well over the postcode median (115 m² across 10 EPCs), placing it in the larger end of the local stock. Across 2003–2020, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £603,000 is 11.7% above the 2020 sale price. Most recent transfer: August 2020 at £540,000.
Energy performance
Rhosyn Gwyn's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once and has no mains gas supply, we believe a Level 3 building survey should be considered.
From £1,155 · Includes VAT
Planning history
Rhosyn Gwyn 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
Rhosyn Gwyn has more than tripled in price since its earliest registered sale in 2003.
£603,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 17 years.
£540,000
Growth on file: 8.3% per year over 17 years.
Sales timeline
5 August 2020Most recent
£540,000
+292.7%over 17 years22 June 2003
£137,500
Median price across the last 5 sales in CF3 2TR: £293,000 (2025–2021).
Nearby sales in CF3 2TR
3 St Peters Crescent, Peterstone Wentlooge, Cardiff, CF3 2TR
Sold Mar 2025
£272,500Brookfield, St Peters Crescent, Peterstone Wentlooge, Cardiff, CF3 2TR
Sold Nov 2024
£605,000Old St Peters, St Peters Crescent, Peterstone Wentlooge, Cardiff, CF3 2TR
Sold Sept 2021
£405,0004 St Peters Crescent, Peterstone Wentlooge, Cardiff, CF3 2TR
Sold Jul 2021
£205,0008 St Peters Crescent, Peterstone Wentlooge, Cardiff, CF3 2TR
Sold Jun 2021
£293,000
Versus other St Peters Crescent homes
Habitable Rooms for Rhosyn Gwyn runs comfortably ahead of the street norm.
Price per m²
£2,186
Street avg £2,306
Floor Area
247 m²
Street avg 151 m²
Habitable Rooms
10 rooms
Street avg 6 rooms
CO₂ Emissions
8.9 t/year
Street avg 15.0 t/year
Similar properties nearby
1 Clos Elphan, St Mellons
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1 Cambrian Crescent, Marshfield
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1 Clos Medwy, St Mellons
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1 Church Close, Peterstone Wentlooge
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1 Marshfield Road, Castleton
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1 Cambrian Grove, Marshfield
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1 Groes Fawr Close, Marshfield
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1 Bayview Cottage, Wellfield Road, Marshfield
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Six Bells — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







