21, Lon Isaf, CF83 1BT

21 Lon Isaf is a 85 m² / 915 sq ft detached home in Caerphilly. It sold for £250,000 in June 2021. Indexed forward to today's value, that sale is roughly £307k. Recent local prices imply a broad valuation context of £197k to £303k based on its internal area. The Land Registry and EPC data was last updated 4 August 2026.

Property data
Sale history
£250,000 on Jun 2021
Internal area
85 square metres (915 square feet) according to latest EPC inspection
Price per internal area

This property sold for £2,941 per square metre (£273 per square foot) in Jun 2021. Indexed forward to today's value, this is roughly £3,615 per square metre (£336 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Jun 2021 £250,000 £2,941 £307,305 £3,615

Calculated using the latest EPC internal area of 85 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 £307,305. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Caerphilly are now selling for between £2,320 and £3,570 per square metre (£215 and £331 per square foot). Based on an internal area of 85 m², this implies a valuation between £197,000 and £303,000. 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
E
Plot size
402 square metres (4,327 square feet) - map showing freehold boundary lines
Archived listings
History:
Archived sales listing for 21 Lon Isaf. Advertised on multiple portals. It was reduced on 20/01/2021. It last appeared Jul 2021.
Photos:

There are 17 archived estate agent listing photos for 21 Lon Isaf.

Photos for 21 Lon Isaf
View photos
Advertiser remarks:
  • 3 bedrooms
  • 1 bathrooms
Planning applications
Planning ref:
October 2021 21/0793/FULL
Type:
Full and householder planning application ; this application involves multiple dwellings
Status:
Application approved
Address:
21 Lon Isaf Caerphilly
Description:
Demolish existing conservatory and erect a single storey extension with roof pitched to gable end
EPC Inspections
Summary:
14 July 2020 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
Marketed sale
Tenure:
Owner-occupied
Property type:
Detached Bungalow , has 4 habitable rooms. Estimated year built 1950 to 1966
Area:
85 sqm (915 square foot) total internal area
Comments:
Walls: Cavity wall, as built, no insulation (assumed). Roof: Pitched, 100 mm loft insulation. Heating: Boiler and radiators, mains gas.
Frequently asked questions

21 Lon 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 £307,305.
  • Based on an internal area of 85 m² and recent prices in Caerphilly, this implies a lower and upper quartile range from £197,000 to £303,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 21 Lon Isaf last sold for £250,000 in June 2021.

HouseMetric shows 21 Lon Isaf as 85 m² (915 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 14 July 2020. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 21 Lon Isaf was in council tax band E. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

21 Lon Isaf is in postcode CF83 1BT, in Caerphilly. You can also view HouseMetric's sold-price page for Lon Isaf, CF83 1BT or analysis of the Caerphilly property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 4 August 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.