Property data
Sale history
£582,500 on Jul 2026
Internal area
148 square metres (1,593 square feet) according to latest EPC inspection
Price per internal area

This property sold for £3,935 per square metre (£366 per square foot) in Jul 2026. Indexed forward to today's value, this is roughly £3,924 per square metre (£365 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Jul 2026 £582,500 £3,936 £580,679 £3,924

Calculated using the latest EPC internal area of 148 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 £580,679. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Mullion are now selling for between £2,980 and £4,350 per square metre (£276 and £404 per square foot). Based on an internal area of 148 m², this implies a valuation between £441,000 and £644,000. 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
2
Type
Detached
Council tax band
D
Plot size
654 square metres (7,040 square feet) - map showing freehold boundary lines
Planning applications
Planning ref:
January 2025 PA24/08591
Type:
Outline application - proposal prior to a full application, including assessments and scoping opinions.
Status:
Application approved
Address:
Buildings At Tregoon Farm Gweek Downs Gweek Helston Cornwall
Description:
Prior Approval for change of use of agricultural barn to form two dwellings, and associated operational development

Planning ref:
July 2024 PA24/02764
Type:
Full and householder planning application
Status:
Application refused
Address:
Tregoon Gweek Downs Gweek Helston Cornwall
Description:
Construction of two dwellings as an alternative to Class Q Development (PA21/02190), improvements to approved conversion of the blockwork barn and conversion of stone barn to dwelling

Planning ref:
August 2022 PA21/05176
Type:
Full and householder planning application
Status:
Application refused
Address:
Buildings At Tregoon Farm Gweek Downs Gweek Helston Cornwal
Description:
Construction of two dwellings, improvements to approved conversion of blockwork barn and conversion of stone barn to dwelling

Planning ref:
May 2021 PA21/02190
Type:
Outline application - proposal prior to a full application, including assessments and scoping opinions.
Status:
Application approved
Address:
Buildings At Tregoon Farm Gweek Downs Gweek Helston Cornwal
Description:
Application to determine if prior approval is required for proposed change of use of agricultural buildings to 3 dwellinghouses (Class C3) and for building operations reasonably necessary for the conversion

Planning ref:
November 2019 PA19/09499
Type:
Outline application - proposal prior to a full application, including assessments and scoping opinions.
Status:
Application approved
Address:
Tregoon Farm Bungalow Gweek Downs Gweek Helston Cornwal
Description:
New access track to allow machinery and trailers to enter without damaging other parcels of land.

Planning ref:
January 2019 PA18/11749
Type:
Full and householder planning application
Status:
Application approved with conditions
Address:
Tregoon Farm Bungalow Gweek Downs Gweek
Description:
Erection of conservatory to the SW elevation of the property

Planning ref:
June 2016 PA16/03024
Type:
Full and householder planning application
Status:
Application approved with conditions
Address:
Tregoon Farm Gweek Downs Gweek Helston Cornwal
Description:
Erection of agricultural machinery store/workshop
EPC Inspections
Summary:
16 October 2024 - energy performance certificate grade E
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
Detached House , has 6 habitable rooms. Estimated year built 1930 to 1949
Area:
148 sqm (1,593 square foot) total internal area
Comments:
Walls: Cavity wall, filled cavity. Roof: Pitched, 250 mm loft insulation. Heating: Boiler and radiators, oil.

Summary:
18 December 2015 - energy performance certificate grade E
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
Assessment for Green Deal
Tenure:
Owner-occupied
Property type:
Detached Bungalow , has 5 habitable rooms. Estimated year built 1900 to 1929
Area:
146 sqm (1,572 square foot) total internal area
Comments:
Walls: Cavity wall, filled cavity. Roof: Pitched, insulated (assumed). Heating: Boiler and radiators, oil.
Frequently asked questions

Tregoon 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 £580,679.
  • Based on an internal area of 148 m² and recent prices in Mullion, this implies a lower and upper quartile range from £441,000 to £644,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, Tregoon last sold for £582,500 in July 2026.

HouseMetric shows Tregoon as 148 m² (1,593 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 2 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 E, from an inspection dated 16 October 2024. EPC information comes from the public Energy Performance Certificate data for England and Wales.

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

Tregoon is in postcode TR12 7AF, in Mullion. You can also view HouseMetric's sold-price page for TR12 7AF or analysis of the Mullion property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 8 October 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.