How much is 4 Castle Square, Mumbles, Swansea, SA3 4BJ worth?
Estimated value — October 2026
£328,000
Likely range £327,000 – £329,000
Latest recorded sale August 2021
80%
confidence
High
Property details
Mid-terrace house
Castle Square · Swansea · SA3 4BJ
Energy performance
Mains Gas (Not Community) · EPC 0269-2830-7020-9021-5711 · inspected February 2019
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 blends in the other valuation methods, so it can sit a little off the line.
View as a table
| Year | Modelled value | Recorded sale |
|---|---|---|
| 2000 | £76,206 | — |
| 2001 | £81,224 | — |
| 2002 | £97,748 | — |
| 2003 | £131,136 | — |
| 2004 | £166,275 | — |
| 2005 | £192,074 | — |
| 2006 | £208,979 | — |
| 2007 | £232,185 | — |
| 2008 | £221,486 | — |
| 2009 | £199,623 | — |
| 2010 | £190,754 | — |
| 2011 | £188,744 | — |
| 2012 | £189,747 | — |
| 2013 | £195,005 | — |
| 2014 | £197,884 | — |
| 2015 | £204,930 | — |
| 2016 | £210,244 | — |
| 2017 | £217,529 | — |
| 2018 | £224,425 | — |
| 2019 | £232,667 | — |
| 2020 | £249,531 | — |
| 2021 | £287,920 | £275,000 |
| 2022 | £304,688 | — |
| 2023 | £303,973 | — |
| 2024 | £311,134 | — |
| 2025 | £334,064 | — |
| 2026 | £329,109 | — |
Sale history
Mortgage calculator
£1,558
Estimated monthly repayment
£295,200
Loan amount
£265,589
Total interest
£560,789
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
- 3 Castle Square, Mumbles, Swansea, SA3 4BJ£290,000 · 2022£306,000
- 7 Castle Square, Mumbles, Swansea, SA3 4BJ£186,000 · 2006£297,000
- 1 Castle Square, Mumbles, Swansea, SA3 4BJ£82,500 · 2001£332,000
- 2 Castle Square, Mumbles, Swansea, SA3 4BJ£55,000 · 1995£297,000
- 11 Castle Square, Mumbles, Swansea, SA3 4BJ£257,500 · 2025£256,000
- 8 Castle Square, Mumbles, Swansea, SA3 4BJ£173,500 · 2015£283,000
- 5 Castle Square, Mumbles, Swansea, SA3 4BJ£66,000 · 2001£278,000
- 12 Castle Square, Mumbles, Swansea, SA3 4BJ£208,000 · 2025£204,000
About this property
4 Castle Square, Mumbles, Swansea, SA3 4BJ is a mid-terrace house on Castle Square in Swansea. Stede's estimated value for October 2026 is £328,000. The likely range is £327,000 to £329,000. It is the average of 2 independent methods that re-index recorded sale prices to today. The confidence score is 80 out of 100 (high), based on how recent the most recent recorded sale is.
It last sold in August 2021 for £275,000. It has 2 sales on record, the earliest in 1996. The current estimate is 19% higher than that price. The current owner has held it for about 5 years.
Its EPC energy-efficiency rating is band D (67 out of 100), with a potential of band B (86) after the recommended improvements. The certificate records a total floor area of 81 m² (872 sq ft). It was lodged in February 2019.
The modelled value is unchanged over the past year and up 20% over the past five years.
Among 8 nearby properties Stede tracks in the SA3 area, estimated values run from £204,000 to £332,000. This mid-terrace house's £328,000 sits toward the upper end of that range.
Common questions
How much is 4 Castle Square, Mumbles, Swansea, SA3 4BJ worth?
Stede estimates 4 Castle Square, Mumbles, Swansea, SA3 4BJ is worth £328,000 as of October 2026, within a likely range of £327,000 to £329,000. The estimate is generated automatically from recorded sale prices and the UK House Price Index, and is not a formal valuation.
When did 4 Castle Square, Mumbles, Swansea, SA3 4BJ last sell?
It last sold in August 2021 for £275,000. There are 2 sales on record, the earliest in 1996.
What type of property is 4 Castle Square, Mumbles, Swansea, SA3 4BJ?
It is recorded as a Mid-terrace house on Castle Square in the SA3 postcode area.
What is the EPC rating of 4 Castle Square, Mumbles, Swansea, SA3 4BJ?
4 Castle Square, Mumbles, Swansea, SA3 4BJ has an EPC energy-efficiency rating of band D (67 out of 100). Its potential rating after the recommended improvements is band B (86). The certificate records a floor area of 81 m² (872 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 80 out of 100 (high), 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 runs 2 independent methods that re-index this property's recorded sale prices to today using the House Price Index for its type and region, then takes the average. Full detail is on the methodology page.
How we calculated this
This estimate averages 2 valuation methods, each re-indexing recorded sale prices to today. The confidence score reflects how recent the most recent recorded sale is.
2
Valuation methods used
2
Recorded sales on file
2021
Most recent recorded sale