| 19 May 2026 | TEWIN WATER FARM HOUSE, TEWIN WATER | Detached | Freehold | £1,895,000 |
| 4 Dec 2025 | TEWIN WATER HOUSE, APARTMENT 5, TEWIN WATER | Flat | Leasehold | £835,000 |
| 4 Mar 2025 | TEWIN WATER HOUSE, APARTMENT 4, TEWIN WATER | Flat | Leasehold | £870,000 |
| 31 Jul 2024 | OAK HEIGHTS, TEWIN WATER | Detached | Freehold | £1,750,000 |
| 9 Sep 2021 | TEWIN WATER HOUSE, APARTMENT 2, TEWIN WATER | Flat | Leasehold | £1,230,000 |
| 18 Feb 2021 | THE STABLE BLOCK, 2, TEWIN WATER | Terraced | Freehold | £795,000 |
| 31 Jul 2020 | THE STABLE BLOCK, 4, TEWIN WATER | Terraced | Freehold | £625,000 |
| 18 Jan 2016 | TEWIN WATER HOUSE, APARTMENT 4, TEWIN WATER | Flat | Leasehold | £757,575 |
| 22 Jan 2014 | TEWIN WATER HOUSE, APARTMENT 5, TEWIN WATER | Flat | Leasehold | £620,000 |
| 1 Jul 2013 | OAK HEIGHTS, TEWIN WATER | Detached | Freehold | £1,520,000 |
| 17 Dec 2009 | TEWIN WATER HOUSE, APARTMENT 6, TEWIN WATER | Flat | Leasehold | £590,000 |
| 7 Nov 2006 | TEWIN WATER HOUSE, APARTMENT 3, TEWIN WATER, WELWYN | Flat | Unknown | £895,000 |
| 19 Aug 2005 | THE STABLE BLOCK, 3, TEWIN WATER, WELWYN | Terraced | Freehold | £370,000 |
| 19 Oct 2004 | THE STABLE BLOCK, 2, TEWIN WATER, WELWYN | Terraced | Freehold | £450,000 |
| 16 May 2003 | THE STABLE BLOCK, 3, TEWIN WATER, WELWYN | Terraced | Freehold | £322,000 |
| 9 May 2003 | THE STABLE BLOCK, 4, TEWIN WATER, WELWYN | Terraced | Freehold | £302,500 |
| 6 Dec 2002 | TEWIN WATER HOUSE, APARTMENT 4, TEWIN WATER, WELWYN | Flat | Leasehold | £494,750 |
| 29 Nov 2002 | TEWIN WATER HOUSE, APARTMENT 6, TEWIN WATER, WELWYN | Flat | Leasehold | £419,000 |
| 31 Jul 2002 | THE STABLE BLOCK, 5, TEWIN WATER, WELWYN | Terraced | Freehold | £357,500 |
| 5 Jul 2002 | THE STABLE BLOCK, 6, TEWIN WATER, WELWYN | Detached | Freehold | £285,000 |
| 21 Mar 2002 | TEWIN WATER HOUSE, APARTMENT 3, TEWIN WATER, WELWYN | Flat | Leasehold | £605,000 |
| 23 Nov 2001 | TEWIN WATER HOUSE, APARTMENT 2, TEWIN WATER, WELWYN | Flat | Leasehold | £570,000 |
| 15 Oct 2001 | TEWIN WATER HOUSE, APARTMENT 5, TEWIN WATER, WELWYN | Flat | Leasehold | £490,000 |
| 28 Sep 2001 | THE STABLE BLOCK, 2, TEWIN WATER, WELWYN | Terraced | Freehold | £387,250 |
| 24 Aug 2001 | TEWIN WATER HOUSE, APARTMENT 1, TEWIN WATER, WELWYN | Flat | Leasehold | £877,000 |
| 28 Sep 2000 | TEWIN WATER FARM HOUSE, TEWIN WATER | Detached | Freehold | £620,000 |
| 28 Aug 1996 | OAK HEIGHTS, TEWIN WATER, WELWYN | Detached | Freehold | £470,000 |