15 Alltmawr Road, Cardiff, CF23 6NQ
About 15 Alltmawr Road
15 Alltmawr Road is a detached house in Cardiff (CF23 6NQ). It has a recorded floor area of 161 m² (around 1733 sq ft), construction records dating it to 1930-1949 and council tax band G. The latest certificate (July 2026) shows a C (score 74). When first surveyed in April 2021 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Average to Good, window efficiency went from Average to Good and lighting went from Good to Very Good. The recommended improvements would push it to B (score 81). This certificate was lodged in the last six months, so the rating reflects current condition.
2 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £826,000 is 25.2% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£381/sq ft) was about 64% above the typical sold price in the postcode. At 161 m² it's 20.7% smaller than the typical home in the postcode (203 m² median across 11 EPCs). Most recent transfer: December 2021 at £660,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about 15 Alltmawr 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
The EPC has just been inspected, so the rating reflects current condition.
EPC Rating
Certificate validity
Valid until 22 July 2036
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
High performance glazing installed
Roof insulation improved
More low energy lighting installed
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 £1,360 · Includes VAT
Planning history
2 applications on record at 15 Alltmawr Road, Cardiff, CF23 6NQ
- Oct 2022ExtensionFullOutcome in report
Extension: Rear of property
REMOVAL OF EXISTING EXTENSION AND CONSTRUCTION OF SINGLE STOREY REAR EXTENSION AND FIRST FLOOR EXTENSION ABOVE EXISTING GARAGE AND ASSOCIATED WORKS
- Documents
- 27 docs on file
- Reference
- 22/01153/DCH
- More recent applications — locked
- ConditionsJun 2023Decision
Unlock 15 Alltmawr Road, Cardiff, CF23 6NQ's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 1 notable nearby
- The 34 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£826,000
Modelled from EPC, postcode comparables.
£660,000
Recorded with HM Land Registry.
Sales timeline
9 December 2021Most recent
£660,000
Median price across the last 5 sales in CF23 6NQ: £737,500 (2025–2022).
Nearby sales in CF23 6NQ
Versus other Alltmawr Road homes
EPC Rating for 15 Alltmawr Road runs comfortably ahead of the street norm.
Price per m²
£4,099
Street avg £3,447
Floor Area
161 m²
Street avg 208 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
CO₂ Emissions
3.9 t/year
Street avg 8.0 t/year
Everything you need to know about 15 Alltmawr 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
0.2 km
Llangorse Rd — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.