9 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ
About 9 Melville Avenue
9 Melville Avenue is a detached house in Old St. Mellons, Cardiff, Cardiff (CF3 5TZ). It has a recorded floor area of 164 m² (around 1765 sq ft) and construction records dating it to 1950-1966. The latest certificate (May 2024) shows a D (score 63), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 83), a 2-band jump.
3 planning records sit against the property, 1 approved, 0 refused, 1 pending. Past consents include tree works, meaningful when judging how the property has evolved. An active application for an extension is awaiting a decision.
Energy performance
9 Melville Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
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Planning history
3 applications on record at 9 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ
1 live now- Oct 2025ExtensionFullOutcome in report
Alterations to Elevations, including Gable Forms and Flat Roof Extensions to property at first floor level, a first-floor rear roof terrace, and various other alterations to main property and to garage
- Documents
- 8 docs on file
- Reference
- 25/02410/HSE
- More recent applications — locked
- ConditionsMar 2026Decision
- Tree WorksDec 2025Decision
Unlock 9 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ'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- Every decision — granted, refused or withdrawn (2 on record)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 3 applications on this property in full
- The 19 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
9 Melville Avenue has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£401,000
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 CF3 5TZ: £400,000 (2022–2015).
Nearby sales in CF3 5TZ
12 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ
Sold Nov 2022
£480,00020 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ
Sold Aug 2022
£400,00015 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ
Sold Dec 2020
£360,00029 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ
Sold Jan 2018
£300,0006 Melville Avenue, Old St Mellons, Cardiff, CF3 5TZ
Sold Aug 2015
£405,000
Versus other Melville Avenue homes
EPC Rating
63 (D)
Street avg 68 (D)
Floor Area
164 m²
Street avg 200 m²
CO₂ Emissions
6.2 t/year
Street avg 5.8 t/year
Habitable Rooms
7 rooms
Street avg 6 rooms
Similar properties nearby
1 Chapel Row Lane, Old St Mellons
CF3 5ST
1 Clos Hendre Gadno, Old St Mellons
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1 Chapel Row, Old St Mellons
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1 Brendon Close, Llanrumney
CF3 5RJ
1 Courtenay Close, Old St Mellons
CF3 5UL
1 Axbridge Crescent, Llanrumney
CF3 5TJ
1 Captain S View, Braunton Crescent, Llanrumney
CF3 5AD
1 Blackbirds Way, St Mellons
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Wern Fawr Lane — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







