Marlborough House, Flat 4, Westgate Street, Cardiff, CF10 1DE
About Marlborough House
Marlborough House is a mid-terrace house in Cardiff (CF10 1DE). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (May 2024) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (November 2010); the latest reading is one band lower. Between certificates, window efficiency went from Poor to Good and hot-water efficiency went from Average to Good; while main heating dropped from Good to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump. Main heating runs on electricity. At 73 m² this is the 10th smallest of 15 units on EPC record in Marlborough House, where floor areas span 26–90 m². The building's EPC ratings span G to C across 15 units on file.
Across 2011–2024, sale prices on this property compounded at 5.6% per year. On a £-per-square-foot basis, the last sale (£255/sq ft) was about 38% above the typical sold price in the postcode. Sold October 2024 for £200,000.
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system upgraded
Window efficiency improved
More low energy lighting installed
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Planning history
Marlborough 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
Sale price has at least doubled since 2011.
£203,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.6% per year over 14 years.
£200,000
Growth on file: 5.6% per year over 14 years.
Sales timeline
28 October 2024Most recent
£200,000
+110.5%over 13 years10 February 2011
£95,000
Median price across the last 5 sales in CF10 1DE: £177,500 (2024–2020).
Nearby sales in CF10 1DE
Marlborough House, Flat 7, Westgate Street, Cardiff, CF10 1DE
Sold Oct 2024
£85,724Marlborough House, Flat 8, Westgate Street, Cardiff, CF10 1DE
Sold Sept 2022
£200,000Marlborough House, Flat 3, Westgate Street, Cardiff, CF10 1DE
Sold Sept 2021
£177,500Marlborough House, Flat 14, Westgate Street, Cardiff, CF10 1DE
Sold Sept 2020
£173,500Marlborough House, Flat 6, Westgate Street, Cardiff, CF10 1DE
Sold Feb 2020
£137,000
Versus other Westgate Street homes
Price per m² for Marlborough House runs comfortably ahead of the street norm.
Price per m²
£2,740
Street avg £2,037
Floor Area
73 m²
Street avg 66 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
2.5 t/year
Street avg 3.3 t/year
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Westgate Street KP — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







