15 Tyla Gwyn, Nantgarw, Cardiff, CF15 7TD
About 15 Tyla Gwyn
15 Tyla Gwyn is a detached house in Nantgarw, Cardiff, Cardiff (CF15 7TD). It has a recorded floor area of 94 m² (around 1012 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (February 2016) shows a C (score 70). The recommended improvements would push it to B (score 84). The latest certificate is from February 2016, so improvements made since then won't be reflected.
Untraded for 31 years, with the last transfer in January 1995. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £322,000 sits 341.1% above the 1995 sale of £73,000. On a £-per-square-foot basis, the last sale (£72/sq ft) was about 67.9% below the postcode norm. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. At 94 m² it's 25.3% larger than the typical home in the postcode (75 m² median across 4 EPCs). Its energy rating outperforms most of the postcode (better than 75% of similar EPCs).
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 28 Feb 2026
EPC Rating
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Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
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Planning history
15 Tyla Gwyn has 2 separate extension applications on the council record.
2 applications on record at 15 Tyla Gwyn, Nantgarw, Cardiff, CF15 7TD
- Sept 2011ConservatoryFullOutcome in report
Extension: Front of property
Conservatory to front elevation
Extension- Documents
- 6 docs on file
- Reference
- 11/0743/10
- More recent applications — locked
- ConservatorySept 2011Decision
Unlock 15 Tyla Gwyn, Nantgarw, Cardiff, CF15 7TD's full planning history
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- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 1 notable nearby
- The 13 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
15 Tyla Gwyn's modelled value sits at over four times its earliest registered sale price (1995).
£322,000
Modelled from EPC, postcode comparables.
£73,000
Recorded with HM Land Registry.
Sales timeline
11 January 1995Most recent
£73,000
Median price across the last 5 sales in CF15 7TD: £196,000 (2020–2013).
Versus other Tyla Gwyn homes
On price per m², 15 Tyla Gwyn runs well behind the street norm.
Price per m²
£777
Street avg £2,497
Floor Area
94 m²
Street avg 79 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
3.2 t/year
Street avg 3.7 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Cross Keys Inn — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







