Welland House, Chapel Row, Old St Mellons, Cardiff, CF3 5UB
About Welland House
Welland House is a detached house in Old St. Mellons, Cardiff, Cardiff (CF3 5UB). It has a recorded floor area of 155 m² (around 1668 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (October 2015) shows a C (score 69), just inside the C band. The latest certificate is from October 2015, so improvements made since then won't be reflected.
At 155 m² the property is well over the postcode median (92 m² across 11 EPCs), placing it in the larger end of the local stock. Across 2016–2021, sale prices on this property compounded at 2.2% per year. Today's modelled estimate of £463,000 is 21% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£229/sq ft) was about 33.6% above the typical sold price in the postcode. Last sale on file: £382,500 in March 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 18 Oct 2025
EPC Rating
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Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
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Planning history
Welland House has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£463,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.2% per year over 5 years.
£382,500
Growth on file: 2.2% per year over 5 years.
Sales timeline
9 March 2021Most recent
£382,500
+10.9%over 4 years12 May 2016
£345,000
Median price across the last 5 sales in CF3 5UB: £232,500 (2025–2021).
Nearby sales in CF3 5UB
6 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Sept 2025
£177,5009 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Jul 2022
£232,50012 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Mar 2022
£288,95011 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Oct 2021
£205,00010 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Aug 2021
£272,500
Versus other Chapel Row homes
On floor area, Welland House stands well clear of the street.
Price per m²
£2,468
Street avg £2,520
Floor Area
155 m²
Street avg 95 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
5.0 t/year
Street avg 4.3 t/year
Similar properties nearby
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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
0.1 km
Tarwick Drive — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







