| 30 Castle Street, Wellingborough, NN8 1LW | Oct 2025 | £327,500 | Terraced | Freehold |
| Flat 9, Castle Court Castle Street, Wellingborough, NN8 1LW | Sep 2025 | £106,500 | Flat / maisonette | Leasehold |
| 47 Castle Street, Wellingborough, NN8 1LW | Jul 2025 | £338,035 | Detached | Freehold |
| 27 Castle Street, Wellingborough, NN8 1LW | Dec 2024 | £340,000 | Terraced | Freehold |
| 36 Castle Street, Wellingborough, NN8 1LW | Apr 2024 | £380,000 | Terraced | Freehold |
| 28 Castle Street, Wellingborough, NN8 1LW | Dec 2023 | £358,500 | Terraced | Freehold |
| 39 Castle Street, Wellingborough, NN8 1LW | Oct 2023 | £210,000 | Terraced | Freehold |
| 19A Castle Street, Wellingborough, NN8 1LW | Aug 2023 | £280,000 | Terraced | Freehold |
| 21 Castle Street, Wellingborough, NN8 1LW | Dec 2022 | £370,000 | Terraced | Freehold |
| Flat 5, Castle Court Castle Street, Wellingborough, NN8 1LW | Nov 2022 | £105,000 | Flat / maisonette | Leasehold |
| 19B Castle Street, Wellingborough, NN8 1LW | Jul 2022 | £330,000 | Terraced | Freehold |
| 26 Castle Street, Wellingborough, NN8 1LW | Sep 2021 | £400,000 | Terraced | Freehold |
| 34 Castle Street, Wellingborough, NN8 1LW | Dec 2020 | £545,000 | Detached | Freehold |
| 45 Castle Street, Wellingborough, NN8 1LW | Jul 2020 | £300,000 | Semi-detached | Freehold |
| 34A Castle Street, Wellingborough, NN8 1LW | Jul 2020 | £60,000 | Other property | Freehold |
| Flat 6, Castle Court Castle Street, Wellingborough, NN8 1LW | Jul 2020 | £78,000 | Flat / maisonette | Leasehold |
| 43 Castle Street, Wellingborough, NN8 1LW | Nov 2019 | £300,000 | Semi-detached | Freehold |
| 23 Castle Street, Wellingborough, NN8 1LW | Dec 2018 | £280,000 | Terraced | Freehold |
| 22 Castle Street, Wellingborough, NN8 1LW | Apr 2018 | £269,950 | Terraced | Freehold |
| Flat 4, Castle Court Castle Street, Wellingborough, NN8 1LW | Dec 2017 | £50,000 | Flat / maisonette | Leasehold |
| 25 Castle Street, Wellingborough, NN8 1LW | Jul 2016 | £292,000 | Terraced | Freehold |
| 37 Castle Street, Wellingborough, NN8 1LW | May 2015 | £240,000 | Terraced | Freehold |
| Flat 2, Castle Court Castle Street, Wellingborough, NN8 1LW | Sep 2013 | £57,000 | Flat / maisonette | Leasehold |
| 24 Castle Street, Wellingborough, NN8 1LW | Nov 2011 | £155,000 | Terraced | Freehold |
| 32 Castle Street, Wellingborough, NN8 1LW | May 2011 | £178,000 | Terraced | Freehold |
| 38 Castle Street, Wellingborough, NN8 1LW | Jul 2008 | £245,000 | Semi-detached | Freehold |
| 44 Castle Street, Wellingborough, NN8 1LW | Aug 2007 | £245,000 | Terraced | Freehold |
| Flat 7, Castle Court Castle Street, Wellingborough, NN8 1LW | Dec 2006 | £75,000 | Flat / maisonette | Leasehold |
| Flat 12, Castle Court Castle Street, Wellingborough, NN8 1LW | Jul 2004 | £65,000 | Flat / maisonette | Leasehold |
| Flat 1, Castle Court Castle Street, Wellingborough, NN8 1LW | Jul 2003 | £47,500 | Flat / maisonette | Leasehold |
| Flat 8, Castle Court Castle Street, Wellingborough, NN8 1LW | Nov 2002 | £55,000 | Flat / maisonette | Leasehold |
| Flat 3, Castle Court Castle Street, Wellingborough, NN8 1LW | Feb 2001 | £27,500 | Flat / maisonette | Leasehold |
| Flat 3, 41 Castle Street, Wellingborough, NN8 1LW | Nov 1996 | £20,000 | Flat / maisonette | Leasehold |
| Flat 1, 41 Castle Street, Wellingborough, NN8 1LW | Nov 1996 | £30,000 | Flat / maisonette | Leasehold |
| Flat 2, 41 Castle Street, Wellingborough, NN8 1LW | Nov 1996 | £31,500 | Flat / maisonette | Leasehold |
| Flat 10, Castle Court Castle Street, Wellingborough, NN8 1LW | Aug 1996 | £19,500 | Flat / maisonette | Leasehold |