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 (98 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 £464,000 is 21.3% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£229/sq ft) was about 30.5% 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This certificate is over 10 years old and is no longer valid.Expired 18 Oct 2025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
Certificate validity
Expired on 18 October 2025
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
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.
£464,000
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
£177,50011 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Feb 2025
£245,0009 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Jul 2022
£232,50012 Chapel Row, Old St Mellons, Cardiff, CF3 5UB
Sold Mar 2022
£288,95010 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 £2,537
Floor Area
155 m²
Street avg 96 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
5.0 t/year
Street avg 4.2 t/year
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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
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.







