18 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX
About 18 Rhyd Yr Helyg
18 Rhyd Yr Helyg is a mid-terrace house in Nantgarw, Cardiff, Cardiff (CF15 7SX). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (March 2018) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 80).
One planning record on file: a loft conversion approved in 2026. Past consents include a loft conversion, meaningful when judging how the property has evolved. Across 2013–2021, sale prices on this property compounded at 7.4% per year. Today's modelled estimate of £202,000 is 44.3% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£171/sq ft) was about 31.2% above the typical sold price in the postcode. Last sale on file: £140,000 in January 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
EPC Rating
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Planning history
1 application on record at 18 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX
- Mar 2026Loft ConversionOutlineOutcome in report
Proposed loft conversion including dormer extension to the rear
- Documents
- 8 docs on file
- Reference
- 26/0193/CPRO
Unlock 18 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX's full planning history
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Sales history & valuation
18 Rhyd Yr Helyg saw 3 transfers in just over a decade — high turnover for the postcode.
£202,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.4% per year over 7 years.
£140,000
Growth on file: 7.4% per year over 7 years.
Sales timeline
22 January 2021Most recent
£140,000
28 March 2018
£140,000
+70.7%over 4 years30 July 2013
£82,000
Median price across the last 5 sales in CF15 7SX: £176,100 (2022–2020).
Nearby sales in CF15 7SX
47 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX
Sold Nov 2022
£170,00036 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX
Sold Jul 2022
£260,65046 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX
Sold Dec 2021
£180,00049 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX
Sold Dec 2020
£92,50051 Rhyd Yr Helyg, Nantgarw, Cardiff, CF15 7SX
Sold Jan 2019
£163,000
Versus other Rhyd Yr Helyg homes
On floor area, 18 Rhyd Yr Helyg runs well behind the street norm.
Price per m²
£1,842
Street avg £1,638
Floor Area
76 m²
Street avg 86 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.2 t/year
Street avg 3.1 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
Day Centre — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







