How much is 21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU worth?
Estimated value — November 2026
£337,000
Likely range £263,000 – £394,000Four in five similar homes sold within their range when we tested it.
Latest recorded sale June 1999
61%
confidence
Medium
Typically within 10% of the sale price
Property details
Semi-detached house
Trenethick Avenue · Helston · TR13 8LU
Energy performance
Mains Gas (Not Community) · EPC 1236-0421-7600-0986-6292 · inspected September 2026
Address
- District
- Kerrier
- County
- Cornwall
Value over time
- Modelled value
- Projected
- Likely range (80%)
- Today's estimate
Drawn through each of this property's recorded sales and ending at today's estimate, with the UK House Price Index for its area and property type filling in the months between. The shaded band is where four in five prices fell when we tested this line against real sales of similar homes; it widens the further a month is from a recorded sale, and today it matches the likely range above.
View as a table
| Year | Modelled value | Likely range |
|---|---|---|
| 2000 | £82,639 | £71,765 – £97,364 |
| 2001 | £98,424 | £84,759 – £113,733 |
| 2002 | £135,301 | £115,278 – £156,067 |
| 2003 | £161,525 | £136,194 – £186,930 |
| 2004 | £193,219 | £161,313 – £224,738 |
| 2005 | £197,389 | £163,434 – £229,789 |
| 2006 | £213,620 | £175,720 – £248,407 |
| 2007 | £227,334 | £185,683 – £264,472 |
| 2008 | £199,282 | £161,358 – £232,483 |
| 2009 | £204,406 | £164,134 – £239,105 |
| 2010 | £214,052 | £170,658 – £251,198 |
| 2011 | £207,091 | £164,577 – £243,858 |
| 2012 | £205,115 | £162,798 – £242,290 |
| 2013 | £212,601 | £168,434 – £252,332 |
| 2014 | £223,465 | £176,852 – £265,679 |
| 2015 | £236,772 | £205,194 – £261,095 |
| 2016 | £236,966 | £203,447 – £262,785 |
| 2017 | £251,511 | £213,902 – £280,480 |
| 2018 | £261,639 | £220,401 – £293,404 |
| 2019 | £268,731 | £224,203 – £303,030 |
| 2020 | £295,956 | £244,524 – £335,572 |
| 2021 | £319,219 | £261,164 – £363,937 |
| 2022 | £360,607 | £292,111 – £413,368 |
| 2023 | £344,337 | £276,148 – £396,861 |
| 2024 | £342,974 | £272,283 – £397,426 |
| 2025 | £336,764 | £264,631 – £392,326 |
| 2026 | £337,000 | £263,000 – £394,000 |
Sale history
Mortgage calculator
£1,809
Estimated monthly repayment
£303,300
Loan amount
£347,831
Total interest
£651,131
Total repayable
A guide only, based on a capital repayment mortgage held at a constant interest rate for the full term. Not a mortgage offer or financial advice.
Related properties
- 40 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU£275,000 · 2021£323,000
- 15 Trenethick Avenue, Helston, Cornwall, TR13 8LU£222,000 · 2017£311,000
- 27 Trenethick Avenue, Helston, Cornwall, TR13 8LU£217,500 · 2013£367,000
- 25 Trenethick Avenue, Helston, Cornwall, TR13 8LU£223,000 · 2019£299,000
- 7 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU£217,400 · 2018£283,000
- 17 Trenethick Avenue, Helston, Cornwall, TR13 8LU£209,950 · 2014£279,000
- 38 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU£68,000 · 1999£286,000
- 14A, Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU£58,000 · 1998£268,000
- 7A, Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU£57,000 · 1998£264,000
- 14 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU£45,500 · 1996£265,000
About this property
21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU is a semi-detached house on Trenethick Avenue in Helston, Cornwall. Stede's estimated value for November 2026 is £337,000. Four in five similar homes sold within their likely range when tested; for this property that range is £263,000 to £394,000. It combines their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 81 similar homes in the same postcode sector (25%). The confidence score is 61 out of 100 (medium): estimates like this one are typically within 10% of the eventual sale price.
It last sold in June 1999 for £66,000. The current estimate is 411% higher than that price. The current owner has held it for about 27 years.
Its EPC energy-efficiency rating is band C (69 out of 100). The certificate records a total floor area of 112 m² (1,206 sq ft). It was lodged in September 2026.
The modelled value is unchanged over the past year and up 6% over the past five years.
Among 10 nearby properties Stede tracks in the TR13 area, estimated values run from £264,000 to £367,000. This semi-detached house's £337,000 sits toward the upper end of that range.
Common questions
How much is 21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU worth?
Stede estimates 21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU is worth £337,000 as of November 2026, within a likely range of £263,000 to £394,000. The estimate is generated automatically from recorded sale prices of this and similar nearby homes and the UK House Price Index, and is not a formal valuation.
When did 21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU last sell?
It last sold in June 1999 for £66,000.
What type of property is 21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU?
It is recorded as a Semi-detached house on Trenethick Avenue in the TR13 postcode area.
What is the EPC rating of 21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU?
21 Trenethick Avenue, Helston, Kerrier, Cornwall, TR13 8LU has an EPC energy-efficiency rating of band C (69 out of 100). The certificate records a floor area of 112 m² (1,206 sq ft). EPC data is published by the Ministry of Housing, Communities & Local Government and reflects the most recent certificate on record.
How reliable is this estimate?
The confidence score is 61 out of 100 (medium). Tested against real sales of similar homes, estimates like this one are typically within 10% of the sale price, and four in five sold within their likely range. The figure is a data model, not a RICS valuation or Home Report, and should not be used for mortgage or legal decisions.
How does Stede calculate this estimate?
It combines their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 81 similar homes in the same postcode sector (25%). Each piece of evidence gets the share that proved most accurate when tested against real sales of similar homes, and the same testing sets the likely range and confidence. Full detail is on the methodology page.
How we got this figure
We weighed the evidence below, giving each piece the share that proved most accurate when we tested it against real sales of similar homes. The likely range and confidence come from testing the same method against 58,473 real sales of similar homes.
- Recent price per m² in the same postcode sector, for its 112 m²£394,51350%
- Its sale in June 1999, brought up to today with the House Price Index£287,64325%
- 81 similar homes sold recently in the same postcode sector£271,32225%
Estimate £337,000, likely £263,000 – £394,000
Read the full methodology and data sources →