Flat B, 3 Maldwyn Street, Cardiff, CF11 9JR
About Flat B
Flat B is a mid-terrace house in Cardiff (CF11 9JR). It has a recorded floor area of 48 m² (around 517 sq ft) and construction records dating it to 1900-1929. The latest certificate (October 2022) shows a C (score 72). When first surveyed in March 2012 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor and window efficiency went from Very Poor to Poor.
At 48 m² it sits well below the postcode median (78 m² across 13 EPCs), making it one of the more compact homes locally.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Single glazing replaced with double or better glazing
Wall insulation improved
More low energy lighting installed
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 £885 · Includes VAT
Planning history
Flat B has no planning applications on record.
But the area is active
4 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Flat B has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£213,000
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 CF11 9JR: £250,000 (2021–2015).
Nearby sales in CF11 9JR
Versus other Maldwyn Street homes
Floor Area for Flat B lags the street by a wide margin.
EPC Rating
72 (C)
Street avg 67 (D)
Floor Area
48 m²
Street avg 63 m²
CO₂ Emissions
1.7 t/year
Street avg 2.8 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
Similar properties nearby
55 57, Flat 1 & 4 12, Cathedral Road
CF11 9HD
55 57, Flat 11, Cathedral Road
CF11 9HD
55 57, Flat 9, Cathedral Road
CF11 9HD
Alexandra Court, Flat 5, Llandaff Road
CF11 9PB
104a, Flat 1, Cowbridge Road East
CF11 9DX
55 57, Flat 3, Cathedral Road
CF11 9HD
55 57, Flat 6, Cathedral Road
CF11 9HD
55 57, Flat 8, Cathedral Road
CF11 9HD
The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Halfway Hotel — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







