4 Mortimer Road, Cardiff, CF11 9JZ
About 4 Mortimer Road
4 Mortimer Road is a three-bedroom mid-terrace house in Cardiff (CF11 9JZ). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (August 2024) shows a C (score 70). The rating has held steady at C across 2 certificates since September 2018. Between certificates, roof efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would push it to B (score 82).
At 109 m² the property is well over the postcode median (79 m² across 30 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 70% of similar EPCs). Across 2007–2018, sale prices on this property compounded at 3.6% per year. Today's modelled estimate of £424,000 sits 60% above the 2018 sale of £265,000. On a £-per-square-foot basis, the last sale (£226/sq ft) was about 28.1% above the typical sold price in the postcode. One planning record on file: a loft conversion approved in 2018. Past consents include a loft conversion, meaningful when judging how the property has evolved. Most recent transfer: November 2018 at £265,000.
What this property has
Inside
- Bedrooms3
- Bathrooms2
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
1 application on record at 4 Mortimer Road, Cardiff, CF11 9JZ
- Nov 2018Loft ConversionOutlineOutcome in report
PROPOSED LOFT CONVERSION WITH REAR FLAT ROOF DORMER TO CREATE AN ADDITIONAL ROOM WITH EN-SUITE
- Documents
- 6 docs on file
- Reference
- 18/02539/DCH
Unlock 4 Mortimer Road, Cardiff, CF11 9JZ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 4 notable nearby
- The 6 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
4 Mortimer Road valuation sits well clear of the typical sold price in this postcode.
£424,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.6% per year over 11 years.
£265,000
Growth on file: 3.6% per year over 11 years.
Sales timeline
7 November 2018Most recent
£265,000
+47.2%over 11 years1 November 2007
£180,000
Median price across the last 5 sales in CF11 9JZ: £319,000 (2025–2018).
Nearby sales in CF11 9JZ
Versus other Mortimer Road homes
4 Mortimer Road outperforms the street on habitable rooms by a wide margin.
Price per m²
£2,431
Street avg £2,583
Floor Area
109 m²
Street avg 86 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
3.5 t/year
Street avg 3.8 t/year
Similar properties nearby
1 Mortimer Road
CF11 9JZ
1 Bloom Street
CF11 9QE
1 Meadow Street
CF11 9PY
1 Beacon Street
CF11 9QD
1 Cwrt Penhill, Penhill Road
CF11 9SN
1 Fairleigh Road
CF11 9JT
1 Denbigh Street
CF11 9JQ
1 Iestynian Avenue
CF11 9HU
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.







