1a, Newminster Road, Cardiff, CF23 5AP
About 1a
1a is a three-bedroom detached house in Cardiff (CF23 5AP). It has a recorded floor area of 145 m² (around 1561 sq ft), construction records dating it to 1976-1982 and council tax band G. The latest certificate (April 2025) shows a D (score 57), a step below the typical UK home. The rating has held steady at D across 2 certificates since March 2009. Between certificates, hot-water efficiency went from Very Poor to Average; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 79).
It changed hands recently, sold December 2025 for £542,500. One planning record on file: a garage conversion approved in 2019. Past consents include a garage conversion, meaningful when judging how the property has evolved. At 145 m² it's 23.9% larger than the typical home in the postcode (117 m² median across 11 EPCs). Across 2009–2025, sale prices on this property compounded at 5.2% per year. On a £-per-square-foot basis, the last sale (£348/sq ft) was about 110.1% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms3
- Bathrooms2
- Utility roomYes
- StudyYes
Outside
- GarageDouble
Everything you need to know about 1a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
1a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Certificate validity
Valid until 10 April 2035
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
1 application on record at 1a, Newminster Road, Cardiff, CF23 5AP
- Jul 2019Garage ConversionFullOutcome in report
CONVERSION OF EXISTING DOUBLE GARAGE TO A GARDEN ROOM, CREATING A PROPOSED LINK FROM THE EXISTING DWELLING TO THE PROPOSED GARDEN ROOM
- Documents
- 12 docs on file
- Reference
- 19/01664/DCH
Unlock 1a, Newminster Road, Cardiff, CF23 5AP's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 1 notable nearby
- The 12 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Latest sale on 1a was the highest on Land Registry record across the postcode.
£553,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.2% per year over 16 years.
£542,500
Growth on file: 5.2% per year over 16 years.
Sales timeline
10 December 2025Most recent
£542,500
+126.0%over 15 years11 December 2009
£240,000
Median price across the last 5 sales in CF23 5AP: £220,000 (2024–2013).
Nearby sales in CF23 5AP
Versus other Newminster Road homes
1a outperforms the street on price per m² by a wide margin.
Price per m²
£3,741
Street avg £2,179
Floor Area
145 m²
Street avg 130 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
6.4 t/year
Street avg 4.9 t/year
Everything you need to know about 1a
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Crime
169/mo
Falling year-on-year across the wider district.
Nearest stop
0.3 km
Waterloo Gardens — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.