21 Empire House, Mount Stuart Square, Cardiff, CF10 5LR
About 21 Empire House
21 Empire House is a mid-terrace house in Cardiff (CF10 5LR). It has a recorded floor area of 68 m² (around 732 sq ft) and construction records dating it to 1900-1929. The latest certificate (February 2024) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since January 2014. Between certificates, window efficiency went from Very Poor to Average and hot-water efficiency went from Very Poor to Poor; while wall efficiency dropped from Very Good to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump. Main heating runs on electricity. At 68 m² this is the 16th smallest of 36 units on EPC record in the building, where floor areas span 39–126 m². The building's EPC ratings span F to B across 36 units on file.
Across 2014–2018, sale prices on this property compounded at 2.1% per year. On a £-per-square-foot basis, the last sale (£328/sq ft) was about 29.4% above the typical sold price in the postcode. Last sold in May 2018, so it's been off the market for around 8 years.
Everything you need to know about 21 Empire House
The true value, the hidden risks and the full sale history, in one report.
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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
Heating controls upgraded for better temperature management
Hot water system upgraded
Window efficiency improved
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
21 Empire House has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£243,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.1% per year over 4 years.
£239,950
Growth on file: 2.1% per year over 4 years.
Sales timeline
17 May 2018Most recent
£239,950
+8.6%over 3 years19 June 2014
£221,000
Median price across the last 5 sales in CF10 5LR: £275,000 (2023–2019).
Nearby sales in CF10 5LR
16 Empire House, Mount Stuart Square, Cardiff, CF10 5LR
Sold Jun 2023
£125,00018 Empire House, Mount Stuart Square, Cardiff, CF10 5LR
Sold Oct 2020
£254,60035 Empire House, Mount Stuart Square, Cardiff, CF10 5LR
Sold Jan 2020
£275,0002 Empire House, Mount Stuart Square, Cardiff, CF10 5LR
Sold Dec 2019
£295,0003 Empire House, Mount Stuart Square, Cardiff, CF10 5LR
Sold Aug 2019
£300,000
Versus other Mount Stuart Square homes
On price per m², 21 Empire House stands well clear of the street.
Price per m²
£3,529
Street avg £2,756
Floor Area
68 m²
Street avg 76 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
2.6 t/year
Street avg 3.2 t/year
Everything you need to know about 21 Empire House
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
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Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Nat West Building — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.