How much is 6 Castle Avenue, Mumbles, Swansea, SA3 4BA worth?
Estimated value — July 2026
£544,000
Latest recorded sale September 2008
30%
confidence
Low
Property details
Semi-detached house
Castle Avenue · Swansea · SA3 4BA
Energy performance
Mains Gas (Not Community) · EPC 8952-6920-4679-7332-0922 · inspected October 2012
Address
- District
- Swansea
- County
- Swansea
Value over time
- Modelled value
- Recorded sale
- Today's estimate
Modelled by indexing this property's most recent recorded sale, month by month, against the UK House Price Index for its area and property type. Earlier sales are shown as recorded. Today's estimate also uses the property's earlier sales, so it can sit a little off the line.
View as a table
| Year | Modelled value | Recorded sale |
|---|---|---|
| 2008 | £361,585 | £340,000 |
| 2009 | £324,463 | — |
| 2010 | £314,647 | — |
| 2011 | £313,862 | — |
| 2012 | £312,314 | — |
| 2013 | £323,652 | — |
| 2014 | £328,166 | — |
| 2015 | £341,968 | — |
| 2016 | £353,063 | — |
| 2017 | £365,980 | — |
| 2018 | £378,834 | — |
| 2019 | £394,800 | — |
| 2020 | £419,186 | — |
| 2021 | £480,919 | — |
| 2022 | £506,434 | — |
| 2023 | £507,049 | — |
| 2024 | £515,196 | — |
| 2025 | £550,881 | — |
| 2026 | £543,801 | — |
Sale history
Mortgage calculator
£2,920
Estimated monthly repayment
£489,600
Loan amount
£561,485
Total interest
£1,051,085
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
- 10 Castle Avenue, Mumbles, Swansea, SA3 4BA£525,000 · 2023£573,000
- 3 Castle Avenue, Mumbles, Swansea, SA3 4BA£370,000 · 2016£584,000
- 12 Castle Avenue, Mumbles, Swansea, SA3 4BA£302,500 · 2006£501,000
- 4 Castle Avenue, Mumbles, Swansea, SA3 4BA£197,500 · 2002£645,000
- 14 Castle Avenue, Mumbles, Swansea, SA3 4BA£290,000 · 2025£291,000
- 1 Castle Avenue, Mumbles, Swansea, SA3 4BA£100,000 · 2000£396,000
- 15 Castle Avenue, Mumbles, Swansea, SA3 4BA£53,000 · 2003£130,000
- 2 Castle Avenue, Mumbles, Swansea, SA3 4BA£340,000 · 2005£576,000
- 8 Castle Avenue, Mumbles, Swansea, SA3 4BA£510,000 · 2020£679,000
- 13 Castle Avenue, Mumbles, Swansea, SA3 4BA£575,000 · 2019£787,000
About this property
6 Castle Avenue, Mumbles, Swansea, SA3 4BA is a semi-detached house on Castle Avenue in Swansea. Stede's estimated value for July 2026 is £544,000. It re-indexes the property's recorded sale prices to today using the UK House Price Index. The confidence score is 30 out of 100 (low), based on how recent the most recent recorded sale is.
It last sold in September 2008 for £340,000. The current estimate is 60% higher than that price. The current owner has held it for about 18 years.
Its EPC energy-efficiency rating is band C (70 out of 100), with a potential of band B (83) after the recommended improvements. The certificate records a total floor area of 206 m² (2,217 sq ft). It was lodged in October 2012.
The modelled value is up 1% over the past year and up 20% over the past five years.
Among 10 nearby properties Stede tracks in the SA3 area, estimated values run from £130,000 to £787,000. This semi-detached house's £544,000 sits around the middle of that range.
Common questions
How much is 6 Castle Avenue, Mumbles, Swansea, SA3 4BA worth?
Stede estimates 6 Castle Avenue, Mumbles, Swansea, SA3 4BA is worth £544,000 as of July 2026. The estimate is generated automatically from recorded sale prices and the UK House Price Index, and is not a formal valuation.
When did 6 Castle Avenue, Mumbles, Swansea, SA3 4BA last sell?
It last sold in September 2008 for £340,000.
What type of property is 6 Castle Avenue, Mumbles, Swansea, SA3 4BA?
It is recorded as a Semi-detached house on Castle Avenue in the SA3 postcode area.
What is the EPC rating of 6 Castle Avenue, Mumbles, Swansea, SA3 4BA?
6 Castle Avenue, Mumbles, Swansea, SA3 4BA has an EPC energy-efficiency rating of band C (70 out of 100). Its potential rating after the recommended improvements is band B (83). The certificate records a floor area of 206 m² (2,217 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 30 out of 100 (low), which reflects how recent the most recent recorded sale is rather than local market volatility. 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?
Stede re-indexes this property's recorded sale prices to today using the House Price Index for its type and region, and tests the result against real sales to set the likely range and confidence. Full detail is on the methodology page.
How we calculated this
This estimate re-indexes the property's recorded sale prices to today with the UK House Price Index for its area and type. The confidence score reflects how recent the most recent recorded sale is.
2
Valuation methods used
1
Recorded sales on file
2008
Most recent recorded sale