Marlborough House, Flat 12, Westgate Street, Cardiff, CF10 1DE
About Marlborough House
Marlborough House is an end-of-terrace house in Cardiff (CF10 1DE). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (April 2012) shows a G (score 13), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 80), a 4-band jump. The latest certificate is from April 2012, so improvements made since then won't be reflected. At 67 m² this is the 5th 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, with this unit at the bottom. On EPC score it ranks last in the building (13 versus a best of 79).
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.
Energy performance
Marlborough House sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 16 Apr 2022
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
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
Marlborough House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£178,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in CF10 1DE: £200,000 (2024–2021).
Nearby sales in CF10 1DE
Marlborough House, Flat 4, Westgate Street, Cardiff, CF10 1DE
Sold Oct 2024
£200,000Marlborough 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
£173,500
Versus other Westgate Street homes
Marlborough House is notably below the street on epc rating.
EPC Rating
13 (G)
Street avg 64 (D)
Floor Area
67 m²
Street avg 67 m²
CO₂ Emissions
9.1 t/year
Street avg 2.9 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
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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.







