21, Austenway, SL9 8NN

21 Austenway is a 226 m² / 2,433 sq ft detached home in Chalfont St Peter. It sold for £1,460,000 in September 2025. Indexed forward to today's value, that sale is roughly £1,440k. Recent local prices imply a broad valuation context of £1,281k to £1,668k based on its internal area. The Land Registry and EPC data was last updated 4 August 2026.

Property data
Sale history
£1,460,000 on Sep 2025
Internal area
226 square metres (2,433 square feet) according to latest EPC inspection
Price per internal area

This property sold for £6,460 per square metre (£600 per square foot) in Sep 2025. Indexed forward to today's value, this is roughly £6,372 per square metre (£592 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Sep 2025 £1,460,000 £6,460 £1,439,971 £6,372

Calculated using the latest EPC internal area of 226 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 £1,439,971. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Chalfont St Peter are now selling for between £5,670 and £7,380 per square metre (£526 and £685 per square foot). Based on an internal area of 226 m², this implies a valuation between £1,281,000 and £1,668,000. 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
5
Type
Detached
Council tax band
G
EPC Inspections
Summary:
01 April 2025 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
Marketed sale
Tenure:
Owner-occupied
Property type:
Detached House , has 8 habitable rooms. Estimated year built 1900 to 1929
Area:
226 sqm (2,433 square foot) total internal area
Comments:
Walls: Cavity wall, as built, no insulation (assumed). Roof: Pitched, insulated. Heating: Boiler and radiators, mains gas.
Frequently asked questions

21 Austenway 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 £1,439,971.
  • Based on an internal area of 226 m² and recent prices in Chalfont St Peter, this implies a lower and upper quartile range from £1,281,000 to £1,668,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 21 Austenway last sold for £1,460,000 in September 2025.

HouseMetric shows 21 Austenway as 226 m² (2,433 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 5 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 01 April 2025. EPC information comes from the public Energy Performance Certificate data for England and Wales.

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

21 Austenway is in postcode SL9 8NN, in Chalfont St Peter. You can also view HouseMetric's sold-price page for Austenway, SL9 8NN or analysis of the Chalfont St Peter 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.