Flat 3, 25 Marlborough Road, Cardiff, CF23 5BT
About Flat 3
Flat 3 is a mid-terrace house in Cardiff (CF23 5BT). It has a recorded floor area of 66 m² (around 710 sq ft) and construction records dating it to 1900-1929. At 66 m² this is the largest unit on EPC record across the building (29–66 m²). The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (76 versus a worst of 60). The latest certificate (July 2026) shows a C (score 76), near the top of the C band. When first surveyed in September 2014 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Very Good and hot-water efficiency went from Very Poor to Good; while window efficiency dropped from Good to Average. This certificate was lodged in the last six months, so the rating reflects current condition.
At 66 m² the property is well over the postcode median (36 m² across 51 EPCs), placing it in the larger end of the local stock.
Everything you need to know about Flat 3
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Energy performance
Flat 3's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 5 July 2036
Property Improvements
Changes detected from historical EPC data
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Upgraded to gas central heating
Connected to mains gas supply
Hot water system upgraded
Wall insulation improved
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
Flat 3 has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Flat 3 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£220,000
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 CF23 5BT: £485,000 (2024–2017).
Nearby sales in CF23 5BT
Versus other Marlborough Road homes
On epc rating, Flat 3 stands well clear of the street.
EPC Rating
76 (C)
Street avg 65 (D)
Floor Area
66 m²
Street avg 44 m²
CO₂ Emissions
1.5 t/year
Street avg 2.3 t/year
Habitable Rooms
3 rooms
Street avg 2 rooms
Everything you need to know about Flat 3
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
Charnwood Court, Flat 2, Maryport Road
CF23 5JY
Charnwood Court, Flat 3, Maryport Road
CF23 5JY
Charnwood Court, Flat 4, Maryport Road
CF23 5JY
Charnwood Court, Flat 1, Maryport Road
CF23 5JY
Carmel Court, Flat 7, Bronwydd Avenue
CF23 5JW
Boleyn Court, Flat 2, Boleyn Walk
CF23 5HT
33a, Flat 1, Fairoak Road
CF23 5HH
Carmel Court, Flat 4, Bronwydd Avenue
CF23 5JW
The neighbourhood at a glance
Crime
169/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Marlborough Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.