House Price Watch
100 most expensive houses in Castle
In the charming area of Castle, part of Swansea, the real estate market has seen a fascinating range of property sales. The most expensive house fetched an impressive £605,000 in 2014, while the least costly on the list was £220,000. Notably, nine houses are located on the same street, Oystermouth Road. Since 1995, there have been 6,378 sales, showcasing the area's vibrant housing market, with the latest sale occurring in 2026.
Sold in March 2014
homegower house st helens road, swansea
£605,000
Sold for a lower amount since this price
Sold in May 2025
heathfield house , swansea
£600,000
Sold in September 2025
226 oystermouth road, swansea
£555,000
4.
Sold in March 2024
48 - 49 the kingsway, swansea
£505,000
5.
Sold in March 2025
27 wind street, swansea
£500,000
6.
Sold in November 2016
210 high street, swansea
£450,000
7.
Sold in November 2016
211 high street, swansea
£450,000
8.
Sold in April 2023
12 gore terrace, swansea
£411,000
9.
Sold in July 2025
4 carlton terrace, swansea
£400,000
10.
Sold in September 2023
28 carlton terrace, swansea
£400,000
Most expensive houses in areas around Castle
£1,175,000
94.21%
£1,150,000
90.08%
£950,000
57.02%
£1,425,000
135.54%
£2,500,000
313.22%
£1,380,000
128.10%
£2,882,745
376.49%
11.
Sold in October 2004
17 union street, swansea
£395,000
12.
Sold in February 2020
1 - 3 ebenezer street, swansea
£380,000
13.
Sold in June 2023
20 carlton terrace, swansea
£380,000
14.
Sold in September 2002
21 union street, swansea
£360,000
15.
Sold in October 2007
6 st helens road, swansea
£360,000
16.
Sold in May 2008
256 - 258 oystermouth road, swansea
£355,000
17.
Sold in December 2025
31 mansel street, swansea
£340,000
18.
Sold in September 2024
6 chaddesley terrace, swansea
£335,000
19.
Sold in December 2021
272 oystermouth road, swansea
£325,000
20.
Sold in December 2004
31 the kingsway, swansea
£325,000
21.
Sold in July 2010
31 the kingsway, swansea
£325,000
22.
Sold in September 2024
14 chaddesley terrace, swansea
£321,000
23.
Sold in July 1997
19 union street, swansea
£320,000
24.
Sold in August 2007
286 oystermouth road, swansea
£320,000
Sold for a lower amount since this price
25.
Sold in May 2022
67 mansel street, swansea
£315,000
26.
Sold in August 2007
206 high street, swansea
£305,000
27.
Sold in November 2022
7 chaddesley terrace, swansea
£305,000
28.
Sold in May 2024
11 gore terrace, swansea
£300,000
29.
Sold in February 2022
4 chaddesley terrace, swansea
£300,000
30.
Sold in November 2022
135 constitution hill, swansea
£300,000
31.
Sold in February 2024
4 gore terrace, swansea
£295,000
32.
Sold in November 2021
8 chaddesley terrace, swansea
£295,000
33.
Sold in October 2021
5 the promenade, swansea
£285,000
34.
Sold in August 2025
378 oystermouth road, swansea
£281,000
35.
Sold in May 2008
excelsior apartment 68, swansea
£280,000
36.
Sold in June 2007
89 st helens road, swansea
£280,000
37.
Sold in February 2006
hwyrnos green dragon lane, swansea
£275,000
38.
Sold in November 1995
19 oxford street, swansea
£275,000
39.
Sold in August 2008
11 - 15 ebenezer street, swansea
£275,000
40.
Sold in September 2023
49 rhondda street, swansea
£273,750
41.
Sold in May 2008
80 oxford street, swansea
£270,000
42.
Sold in June 2007
390 oystermouth road, swansea
£270,000
43.
Sold in October 2021
8 the promenade, swansea
£270,000
44.
Sold in September 2001
22 - 23 high street, swansea
£265,000
45.
Sold in June 2006
199a high street, swansea
£265,000
46.
Sold in September 2015
castle quarter apartment 4, swansea
£265,000
47.
Sold in December 2024
39 heathfield, swansea
£264,500
48.
Sold in March 2025
151 rodney street, swansea
£260,000
49.
Sold in May 2020
318 oystermouth road, swansea
£260,000
50.
Sold in April 2026
20 the promenade, swansea
£260,000
51.
Sold in November 2025
72 mansel street, swansea
£255,000
52.
Sold in October 1995
28 - 29 wind street, swansea
£250,000
53.
Sold in April 2023
225 high street, swansea
£250,000
54.
Sold in September 2007
235 high street, swansea
£250,000
Sold for a lower amount since this price
55.
Sold in 1998
232 oxford street, swansea
£250,000
56.
Sold in April 2007
12 portland street, swansea
£250,000
57.
Sold in October 2017
286 oystermouth road, swansea
£250,000
58.
Sold in October 2024
70 st helens road, swansea
£250,000
59.
Sold in October 2024
69 st helens road, swansea
£250,000
60.
Sold in February 2000
19 the kingsway, swansea
£250,000
61.
Sold in October 2023
19 the kingsway, swansea
£250,000
62.
Sold in November 2018
41 heathfield, swansea
£250,000
63.
Sold in October 2004
17 walter road, swansea
£249,500
Sold for a lower amount since this price
64.
Sold in September 2018
5 oaklands terrace, swansea
£249,000
65.
Sold in 2006
209a high street, swansea
£248,000
66.
Sold in 2023
24 carlton terrace, swansea
£247,000
67.
Sold in June 2007
115 st helens road, swansea
£245,000
Sold for a lower amount since this price
68.
Sold in August 2024
29 fleet street, swansea
£245,000
69.
Sold in June 2007
12 - 13 st helens road, swansea
£245,000
70.
Sold in June 2024
11 russell street, swansea
£245,000
71.
Sold in July 2006
76 mansel street, swansea
£245,000
72.
Sold in April 2019
6 heathfield, swansea
£245,000
73.
Sold in May 2022
23 the promenade, swansea
£241,500
74.
Sold in August 2023
1 vincent street, swansea
£241,000
75.
Sold in December 2004
5 st helens road, swansea
£241,000
76.
Sold in August 2019
376 oystermouth road, swansea
£240,000
77.
Sold in December 2004
63 st helens road, swansea
£240,000
78.
Sold in December 2024
6 russell street, swansea
£240,000
79.
Sold in May 2008
141a walter road, swansea
£240,000
Sold for a lower amount since this price
80.
Sold in May 2020
27 mount pleasant, swansea
£240,000
81.
Sold in December 2009
10 st helens road, swansea
£235,000
82.
Sold in April 2019
8 the promenade, swansea
£235,000
83.
Sold in November 2007
5 oaklands terrace, swansea
£234,950
84.
Sold in November 2013
88a st helens road, swansea
£233,000
85.
Sold in September 2007
46b worcester place, swansea
£232,500
86.
Sold in October 2022
4 carlton terrace, swansea
£232,500
87.
Sold in December 2024
54 st helens road, swansea
£230,000
88.
Sold in 2023
27 page street, swansea
£230,000
89.
Sold in March 2021
4 carlton terrace, swansea
£230,000
90.
Sold in September 2024
41 carlton terrace, swansea
£230,000
91.
Sold in May 2024
7 oaklands terrace, swansea
£230,000
92.
Sold in November 2025
43 mount pleasant, swansea
£227,500
93.
Sold in June 2006
8 dillwyn street, swansea
£227,000
94.
Sold in September 2023
6 - 7 hewson street, swansea
£226,000
95.
Sold in September 2005
25 russell street, swansea
£225,000
Sold for a lower amount since this price
96.
Sold in August 2025
11 heathfield, swansea
£225,000
97.
Sold in August 2023
10 bond street, swansea
£223,000
98.
Sold in April 2025
43 western street, swansea
£221,000
99.
Sold in July 2021
5 glamorgan street, swansea
£220,000
100.
Sold in April 2022
93 rodney street, swansea
£220,000
Data Source & Update Note:
This list of the 100 most expensive homes sold in Castle is compiled from all-time residential sales recorded by the HM Land Registry. Each entry includes the sale price and transaction date. The dataset was last updated 20 May 2026 at 11:39 with the latest HM Land Registry data (March 2026). The Castle dataset covers 839 postcodes. Prices reflect actual recorded transactions, not current market valuations. Read our full data methodology.