12 Grenville Road, Cardiff, CF23 5BP
About 12 Grenville Road
12 Grenville Road is a three-bedroom end-of-terrace house in Cardiff (CF23 5BP). It has a recorded floor area of 112 m² (around 1206 sq ft), construction records dating it to 1930-1949 and council tax band F. The latest certificate (January 2026) shows a C (score 71). When first surveyed in March 2012 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Poor; while window efficiency dropped from Average to Poor.
Most recent transfer was May 2026 at £500,000 — fresh data. Across the public record there are 4 sales, relatively high churn for a single property. Its energy rating outperforms most of the postcode (better than 86% of similar EPCs). Across 2006–2026, sale prices on this property compounded at 4% per year. On a £-per-square-foot basis, the last sale (£415/sq ft) was about 80.5% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Everything you need to know about 12 Grenville Road
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
EPC Rating
Certificate validity
Valid until 14 January 2036
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Wall insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
12 Grenville Road 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
Latest sale on 12 Grenville Road was the highest on Land Registry record across the postcode.
£493,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.0% per year over 20 years.
£500,000
Growth on file: 4.0% per year over 20 years.
Sales timeline
10 May 2026Most recent
£500,000
+63.4%over 11 years20 April 2015
£306,000
+15.5%over 2 years21 June 2012
£265,000
+13.7%over 5 years7 September 2006
£233,000
Median price across the last 5 sales in CF23 5BP: £297,500 (2020–2012).
Nearby sales in CF23 5BP
Versus other Grenville Road homes
On price per m², 12 Grenville Road stands well clear of the street.
Price per m²
£4,464
Street avg £2,690
Floor Area
112 m²
Street avg 115 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.3 t/year
Street avg 4.8 t/year
Everything you need to know about 12 Grenville Road
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
0.1 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.