31 Bryn Y Nant, Llanedeyrn, Cardiff, CF23 9NZ
About 31 Bryn Y Nant
31 Bryn Y Nant is a mid-terrace house in Llanedeyrn, Cardiff, Cardiff (CF23 9NZ). It has a recorded floor area of 113 m² (around 1216 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (October 2017) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (November 2012); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good; while wall efficiency dropped from Poor to Very Poor and roof efficiency dropped from Poor to Very Poor. The recommended improvements would push it to C (score 79).
At 113 m² the property is well over the postcode median (87 m² across 36 EPCs), placing it in the larger end of the local stock. Most recent transfer was May 2025 at £140,000 — fresh data. Across 1998–2025, sale prices on this property compounded at 6.4% per year. Today's modelled estimate of £206,000 is 47.1% above the 2025 sale price.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Window efficiency improved
Roof insulation improved
Low energy lighting percentage decreased
Heating controls changed
More low energy lighting installed
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Planning history
31 Bryn Y Nant has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
31 Bryn Y Nant has more than quadrupled in price since its earliest registered sale in 1998.
£206,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.4% per year over 27 years.
£140,000
Growth on file: 6.4% per year over 27 years.
Sales timeline
21 May 2025Most recent
£140,000
+439.5%over 27 years3 February 1998
£25,950
Median price across the last 5 sales in CF23 9NZ: £180,000 (2025–2023).
Nearby sales in CF23 9NZ
12 Bryn Y Nant, Llanedeyrn, Cardiff, CF23 9NZ
Sold May 2025
£180,00015 Bryn Y Nant, Llanedeyrn, Cardiff, CF23 9NZ
Sold Feb 2025
£195,0007 Bryn Y Nant, Llanedeyrn, Cardiff, CF23 9NZ
Sold Oct 2024
£190,00033 Bryn Y Nant, Llanedeyrn, Cardiff, CF23 9NZ
Sold Jul 2024
£140,00016 Bryn Y Nant, Llanedeyrn, Cardiff, CF23 9NZ
Sold Dec 2023
£162,000
Versus other Bryn Y Nant homes
31 Bryn Y Nant is notably below the street on years held.
Price per m²
£1,239
Street avg £1,430
Floor Area
113 m²
Street avg 88 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
4.0 t/year
Street avg 3.3 t/year
Similar properties nearby
1 Bryn Y Nant, Llanedeyrn
CF23 9NZ
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1 Ferny Court, Waterloo Road, Penylan
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1 Awel Mor, Llanedeyrn
CF23 9QA
1 Eastside Quarter, Maelfa, Llanedeyrn
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1 Howardian Close, Penylan
CF23 9AG
1 Grafton Close, Penylan
CF23 9JA
1 Ffordd Nowell, Penylan
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Bryn-Y-Nant — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







