137, Heol Isaf, CF15 8DX

137 Heol Isaf is a 171 m² / 1,841 sq ft detached home in Radyr. It sold for £370,000 in May 2008. Indexed forward to today's value, that sale is roughly £662k. Recent local prices imply a broad valuation context of £539k to £732k based on its internal area. The Land Registry and EPC data was last updated 1 June 2026.

Property data
Sale history
£370,000 on May 2008
Internal area
171 square metres (1,841 square feet) according to latest EPC inspection
Price per internal area

This property sold for £2,163 per square metre (£201 per square foot) in May 2008. Indexed forward to today's value, this is roughly £3,874 per square metre (£360 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
May 2008 £370,000 £2,164 £662,423 £3,874

Calculated using the latest EPC internal area of 171 m². Earlier sale dates may not have had the same measured area available.

Valuation
The most recent sale price indexed forward to today's value is £662,423. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Radyr are now selling for between £3,150 and £4,280 per square metre (£292 and £397 per square foot). Based on an internal area of 171 m², this implies a valuation between £539,000 and £732,000. Treat this as context only. For a valuation using hand-picked comparable sales, use the Advanced search tool — create a shortlist of similar condition homes, then export a valuation report.
Bedrooms
3
Type
Detached
Council tax band
G
Plot size
870 square metres (9,365 square feet) - map showing freehold boundary lines
Planning applications
Planning ref:
June 2017 17/01043/DCH
Type:
Full and householder planning application
Status:
Application approved
Address:
137 Heol Isaf Radyr Cardif
Description:
CONVERSION OF FORMER GARAGE AREA, THE CONSTRUCTION OF A SINGLE STOREY REAR EXTENSION WITH 1ST FLOOR ACCESS TO ROOF AREA ABOVE/ROOF TERRACE AND ATTIC CONVERSION WITH DORMER WINDOW
EPC Inspections
Summary:
08 October 2015 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
FiT application
Tenure:
Owner-occupied
Property type:
Detached House , has 6 habitable rooms. Estimated year built 1950 to 1966
Area:
171 sqm (1,841 square foot) total internal area
Comments:
Walls: Cavity wall, as built, no insulation (assumed). Roof: Pitched, 200 mm loft insulation. Heating: Boiler and radiators, mains gas.
Frequently asked questions

137 Heol Isaf is worth whatever price a willing buyer and seller agree upon. However, the following can provide useful context.

  • HouseMetric estimates the most recent sale price indexed forward to today's value is £662,423.
  • Based on an internal area of 171 m² and recent prices in Radyr, this implies a lower and upper quartile range from £539,000 to £732,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 137 Heol Isaf last sold for £370,000 in May 2008.

HouseMetric shows 137 Heol Isaf as 171 m² (1,841 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 3 bedrooms. Bedroom numbers can come from a previous estate agency listing, an EPC record, or an estimate based on the size of the property.

The latest EPC rating shown by HouseMetric is D, from an inspection dated 08 October 2015. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 137 Heol Isaf was in council tax band G. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

137 Heol Isaf is in postcode CF15 8DX, in Radyr. You can also view HouseMetric's sold-price page for Heol Isaf, CF15 8DX or analysis of the Radyr property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 1 June 2026. Figures such as indexed values and local valuation ranges are calculated estimates for context, while official records can change as public datasets are updated.

For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.