How much is 36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA worth?
Estimated value — November 2026
£294,000
Likely range £239,000 – £335,000Four in five similar homes sold within their range when we tested it.
Latest recorded sale September 1998
66%
confidence
High
Typically within 8% of the sale price
Property details
Detached house
Old Castle Avenue · Welshpool · SY21 9PA
Energy performance
Mains Gas (Not Community) · EPC 1335-1520-1509-0939-5292 · inspected October 2025
Address
- District
- Powys
- County
- Powys
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 | £81,557 | £70,651 – £94,135 |
| 2001 | £89,485 | £76,812 – £102,901 |
| 2002 | £112,072 | £95,327 – £128,978 |
| 2003 | £136,673 | £115,270 – £158,046 |
| 2004 | £163,996 | £137,280 – £189,913 |
| 2005 | £173,192 | £144,223 – £200,068 |
| 2006 | £184,328 | £152,710 – £212,746 |
| 2007 | £205,334 | £168,957 – £237,253 |
| 2008 | £172,569 | £140,952 – £199,922 |
| 2009 | £183,409 | £148,953 – £212,772 |
| 2010 | £189,514 | £153,358 – £220,625 |
| 2011 | £185,525 | £150,281 – £216,339 |
| 2012 | £182,699 | £147,874 – £213,882 |
| 2013 | £186,298 | £150,862 – £218,679 |
| 2014 | £189,021 | £168,438 – £204,365 |
| 2015 | £193,504 | £171,136 – £210,178 |
| 2016 | £205,276 | £180,171 – £223,990 |
| 2017 | £214,343 | £186,693 – £234,955 |
| 2018 | £226,062 | £195,386 – £248,930 |
| 2019 | £226,123 | £193,923 – £250,127 |
| 2020 | £248,998 | £211,872 – £276,674 |
| 2021 | £273,142 | £230,586 – £304,866 |
| 2022 | £302,409 | £253,266 – £339,043 |
| 2023 | £286,461 | £237,990 – £322,594 |
| 2024 | £288,576 | £237,814 – £326,417 |
| 2025 | £289,125 | £236,329 – £328,482 |
| 2026 | £294,000 | £239,000 – £335,000 |
Sale history
Mortgage calculator
£1,578
Estimated monthly repayment
£264,600
Loan amount
£303,449
Total interest
£568,049
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
- 9 Oldcastle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£275,000 · 2026£289,000
- 28 Oldcastle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£280,000 · 2025£283,000
- 31 Oldcastle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£281,500 · 2022£288,000
- 40 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£212,500 · 2018£286,000
- 15 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£185,000 · 2014£279,000
- 42 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£180,000 · 2013£274,000
- 9 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£179,995 · 2013£280,000
- 52 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£195,000 · 2012£280,000
- 14 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£187,500 · 2010£291,000
- 13 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA£210,000 · 2007£302,000
About this property
36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA is a detached house on Old Castle Avenue in Welshpool, Powys. Stede's estimated value for November 2026 is £294,000. Four in five similar homes sold within their likely range when tested; for this property that range is £239,000 to £335,000. 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 3 similar homes in the same postcode (25%). The confidence score is 66 out of 100 (high): estimates like this one are typically within 8% of the eventual sale price.
It last sold in September 1998 for £71,000. The current estimate is 314% higher than that price. The current owner has held it for about 28 years.
Its EPC energy-efficiency rating is band D (68 out of 100), with a potential of band C (73) after the recommended improvements. The certificate records a total floor area of 109 m² (1,173 sq ft). It was lodged in October 2025.
The modelled value is unchanged over the past year and up 7% over the past five years.
Among 10 nearby properties Stede tracks in the SY21 area, estimated values run from £274,000 to £302,000. This detached house's £294,000 sits around the middle of that range.
Common questions
How much is 36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA worth?
Stede estimates 36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA is worth £294,000 as of November 2026, within a likely range of £239,000 to £335,000. 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 36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA last sell?
It last sold in September 1998 for £71,000.
What type of property is 36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA?
It is recorded as a Detached house on Old Castle Avenue in the SY21 postcode area.
What is the EPC rating of 36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA?
36 Old Castle Avenue, Guilsfield, Welshpool, Powys, SY21 9PA has an EPC energy-efficiency rating of band D (68 out of 100). Its potential rating after the recommended improvements is band C (73). The certificate records a floor area of 109 m² (1,173 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 66 out of 100 (high). Tested against real sales of similar homes, estimates like this one are typically within 8% 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 3 similar homes in the same postcode (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 13,681 real sales of similar homes.
- Recent price per m² in the same postcode, for its 109 m²£328,85450%
- Its sale in September 1998, brought up to today with the House Price Index£241,12225%
- 3 similar homes sold recently in the same postcode£278,79125%
Estimate £294,000, likely £239,000 – £335,000
Read the full methodology and data sources →