| 19 Dec 2025 | 10, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £175,000 |
| 14 Nov 2025 | 9, LOWER GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £367,500 |
| 24 Oct 2025 | 6, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £302,000 |
| 23 Sep 2025 | 6, GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £276,000 |
| 29 Aug 2025 | 18, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £270,000 |
| 14 Feb 2025 | 8, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £312,500 |
| 10 Jan 2025 | 18A, PORTLAND PLACE | Flat | Leasehold | £370,000 |
| 1 Jan 2025 | 11, PORTLAND PLACE | Terraced | Freehold | £1,100,000 |
| 21 Feb 2024 | 9, LOWER GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £216,000 |
| 4 Dec 2023 | 15 - 17, FLAT 7, PORTLAND PLACE | Flat | Leasehold | £385,000 |
| 30 Jun 2023 | 10, FLAT 6, PORTLAND PLACE | Flat | Leasehold | £190,000 |
| 26 Jan 2023 | 24, PORTLAND PLACE | Terraced | Freehold | £2,000,000 |
| 20 Jan 2023 | 15 - 17, FLAT 5, PORTLAND PLACE | Flat | Leasehold | £400,000 |
| 9 Dec 2022 | 4, UPPER MAISONETTE, PORTLAND PLACE | Flat | Leasehold | £850,000 |
| 4 Oct 2022 | 6, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £295,000 |
| 16 Sep 2022 | 18, FLAT 2, PORTLAND PLACE | Flat | Leasehold | £390,000 |
| 9 Sep 2022 | 10, FLAT 7, PORTLAND PLACE | Flat | Leasehold | £169,000 |
| 21 Mar 2022 | 15 - 17, FLAT 11, PORTLAND PLACE | Flat | Leasehold | £320,000 |
| 10 Sep 2021 | 6, GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £269,000 |
| 9 Sep 2021 | 4, LOWER GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £335,000 |
| 1 Sep 2021 | 15 - 17, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £330,000 |
| 27 Aug 2021 | 15 - 17, BASEMENT FLAT 14, PORTLAND PLACE | Flat | Leasehold | £305,000 |
| 23 Aug 2021 | 15 - 17, FLAT 7, PORTLAND PLACE | Flat | Leasehold | £330,000 |
| 29 Jan 2021 | 15 - 17, FLAT 4, PORTLAND PLACE | Flat | Leasehold | £415,000 |
| 25 Sep 2020 | 3, FLAT 5, PORTLAND PLACE | Flat | Leasehold | £282,500 |
| 19 Dec 2019 | 15 - 17, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £283,000 |
| 15 Nov 2019 | 18, FLAT 2, PORTLAND PLACE | Flat | Leasehold | £263,500 |
| 17 Oct 2019 | 9, PORTLAND PLACE | Other | Freehold | £36,000 |
| 16 Oct 2019 | 4, LOWER GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £288,000 |
| 17 Apr 2019 | 8, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £245,000 |
| 11 Oct 2017 | 18, FLAT 5, PORTLAND PLACE | Flat | Leasehold | £180,000 |
| 22 Sep 2017 | 18, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £275,000 |
| 11 Sep 2017 | 8, PORTLAND PLACE | Other | Freehold | £16,211 |
| 1 Sep 2017 | 3, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £300,000 |
| 3 Apr 2017 | 6, FLAT 3, PORTLAND PLACE | Other | Leasehold | £240,000 |
| 9 Jun 2016 | 15 - 17, FLAT 2, PORTLAND PLACE | Flat | Leasehold | £320,000 |
| 29 Jan 2016 | 21, PORTLAND PLACE | Terraced | Freehold | £1,735,000 |
| 5 Oct 2015 | 2, PORTLAND PLACE | Terraced | Freehold | £1,055,000 |
| 25 Sep 2015 | 15 - 17, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £260,000 |
| 1 Sep 2015 | 15 - 17, FLAT 4, PORTLAND PLACE | Flat | Leasehold | £310,000 |
| 11 Jun 2015 | 20, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £239,000 |
| 18 Feb 2015 | 10, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £272,000 |
| 30 Dec 2014 | 5, PORTLAND PLACE | Terraced | Freehold | £560,000 |
| 2 Jul 2014 | 15 - 17, FLAT 10, PORTLAND PLACE | Flat | Leasehold | £250,000 |
| 27 Jun 2014 | 11, PORTLAND PLACE | Terraced | Freehold | £910,000 |
| 20 May 2014 | 18, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £193,000 |
| 17 Mar 2014 | 7A, BASEMENT FLAT, PORTLAND PLACE | Terraced | Freehold | £1,100,000 |
| 23 Jan 2014 | 4, LOWER GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £249,000 |
| 30 Aug 2013 | 18, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £227,500 |
| 9 Aug 2013 | 21, PORTLAND PLACE | Terraced | Freehold | £1,250,000 |
| 23 Jul 2013 | 15 - 17, FLAT 11, PORTLAND PLACE | Flat | Leasehold | £225,000 |
| 24 May 2013 | 15 - 17, FLAT 15, PORTLAND PLACE | Flat | Leasehold | £225,000 |
| 26 Apr 2012 | 10, FLAT 7, PORTLAND PLACE | Flat | Leasehold | £120,000 |
| 4 Jan 2012 | 15 - 17, FLAT 5, PORTLAND PLACE | Flat | Leasehold | £265,000 |
| 26 Oct 2011 | 4, GROUND FLOOR FLAT, PORTLAND PLACE | Terraced | Leasehold | £190,000 |
| 14 Oct 2011 | 15 - 17, FLAT 14, PORTLAND PLACE | Flat | Leasehold | £220,000 |
| 18 Aug 2011 | 22, FIRST FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £222,500 |
| 28 Jul 2011 | 15 - 17, FLAT 2, PORTLAND PLACE | Flat | Leasehold | £232,000 |
| 27 Jun 2011 | 23, PORTLAND PLACE | Terraced | Freehold | £820,000 |
| 10 Jun 2011 | 3, FLAT 5, PORTLAND PLACE | Flat | Leasehold | £202,000 |
| 21 Apr 2011 | 18, FLAT 4, PORTLAND PLACE | Flat | Leasehold | £124,995 |
| 7 Mar 2011 | 24, PORTLAND PLACE | Terraced | Freehold | £876,738 |
| 24 Feb 2011 | 6, GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £180,000 |
| 17 Dec 2010 | 22, BASEMENT FLAT, PORTLAND PLACE | Flat | Leasehold | £209,000 |
| 15 Jul 2010 | 18, FLAT 4, PORTLAND PLACE | Flat | Leasehold | £96,000 |
| 14 Jul 2010 | 15 - 17, FLAT 9, PORTLAND PLACE | Flat | Leasehold | £215,000 |
| 18 Dec 2009 | 4, UPPER MAISONETTE, PORTLAND PLACE | Flat | Leasehold | £500,000 |
| 11 Dec 2009 | 4, LOWER GROUND FLOOR FLAT, PORTLAND PLACE | Terraced | Leasehold | £229,000 |
| 2 Jan 2009 | 22, BASEMENT FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £189,000 |
| 2 Dec 2008 | 15 - 17, FLAT 8, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £201,000 |
| 25 Jan 2008 | 8, FLAT 2, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £244,950 |
| 9 Jan 2008 | 20A, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £180,000 |
| 19 Oct 2007 | 10, FLAT 7, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £122,750 |
| 5 Sep 2007 | 15 - 17, FLAT 1, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £275,000 |
| 16 Aug 2007 | 8, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £199,950 |
| 20 Jul 2007 | 15 - 17, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £256,400 |
| 5 Feb 2007 | 3, FLAT 3, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £184,950 |
| 1 Dec 2006 | 18, FLAT 3, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £167,500 |
| 29 Sep 2006 | 8, FLAT 1, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £195,000 |
| 18 Aug 2006 | 3, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £198,000 |
| 2 Aug 2006 | 4, UPPER MAISONETTE, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £385,000 |
| 28 Jul 2006 | 15 - 17, FLAT 4, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £182,500 |
| 7 Apr 2006 | 15 - 17, FLAT 1, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £182,500 |
| 3 Mar 2006 | 15 - 17, FLAT 6, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £210,000 |
| 13 Jan 2006 | 7, PORTLAND PLACE, BRIGHTON | Terraced | Freehold | £730,000 |
| 26 Aug 2005 | 25, PORTLAND PLACE | Terraced | Freehold | £687,500 |
| 1 Jul 2005 | 10, FLAT 6, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £123,000 |
| 10 Jun 2005 | 8, FLAT 1, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £151,000 |
| 22 Apr 2005 | 10, FLAT 7, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £85,000 |
| 4 Apr 2005 | 10, FLAT 3, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £117,000 |
| 28 Feb 2005 | 22, THIRD FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £164,000 |
| 20 Dec 2004 | 15 - 17, FLAT 8, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £176,000 |
| 20 Aug 2004 | 22, GROUND FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £174,000 |
| 6 Aug 2004 | 9, FLAT 3, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £144,400 |
| 30 Jul 2004 | 22, FIRST FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £169,950 |
| 2 Jul 2004 | 6, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £135,500 |
| 16 Feb 2004 | 15 - 17, FLAT 7, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £173,000 |
| 12 Dec 2003 | 10, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £157,500 |
| 12 Dec 2003 | 6, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £125,000 |
| 4 Dec 2003 | 8, FLAT 1, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £134,000 |
| 3 Dec 2003 | 8, FLAT 2, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £171,000 |
| 23 Oct 2003 | 10, FLAT 6, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £105,000 |
| 21 Aug 2003 | 10, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £140,000 |
| 11 Jul 2003 | 18, FLAT 3, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £138,000 |
| 22 Nov 2002 | 22, THIRD FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £135,000 |
| 18 Nov 2002 | 4, LOWER GROUND FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £124,000 |
| 9 Oct 2002 | 22, SECOND FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £123,500 |
| 27 Sep 2002 | 9, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £115,000 |
| 27 Sep 2002 | 15 - 17, FLAT 14, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £172,000 |
| 27 Sep 2002 | 22, GROUND FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £125,000 |
| 4 Sep 2002 | 22, FIRST FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £140,000 |
| 22 Aug 2002 | 22, BASEMENT FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £125,500 |
| 1 Jul 2002 | 15 - 17, FLAT 12B, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £138,000 |
| 21 Jun 2002 | 20, FIRST FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £145,000 |
| 23 May 2002 | 10, FLAT 3, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £97,000 |
| 22 May 2002 | 18, FLAT 1, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £140,000 |
| 21 May 2002 | 5, PORTLAND PLACE, BRIGHTON | Terraced | Freehold | £350,000 |
| 20 May 2002 | 25, PORTLAND PLACE | Terraced | Freehold | £490,000 |
| 26 Apr 2002 | 15 - 17, FLAT 14, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £136,000 |
| 12 Nov 2001 | 9, LOWER GROUND FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £114,000 |
| 17 Oct 2001 | 10, FLAT 6, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £78,000 |
| 18 Sep 2001 | 15 - 17, FLAT 10, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £125,000 |
| 17 Jul 2001 | 18, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £44,000 |
| 16 Jul 2001 | 21, PORTLAND PLACE, BRIGHTON | Detached | Freehold | £630,000 |
| 30 Mar 2001 | 3, FLAT 5, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £113,000 |
| 29 Jan 2001 | 15 - 17, FLAT 14, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £113,000 |
| 30 Nov 2000 | 3, FLAT 4, PORTLAND PLACE | Flat | Leasehold | £76,700 |
| 23 Nov 2000 | 18, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £73,000 |
| 20 Oct 2000 | 9, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £94,000 |
| 4 Jul 2000 | 3, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £66,000 |
| 29 Jun 2000 | 25, PORTLAND PLACE | Terraced | Freehold | £310,000 |
| 26 May 2000 | 15 - 17, FLAT 14, PORTLAND PLACE | Flat | Leasehold | £107,500 |
| 8 May 2000 | 17, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £87,000 |
| 20 Mar 2000 | 18, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £86,500 |
| 17 Mar 2000 | 9, PORTLAND PLACE | Flat | Leasehold | £74,500 |
| 15 Mar 2000 | 3, FLAT 5, PORTLAND PLACE | Flat | Leasehold | £60,000 |
| 25 Feb 2000 | 3, FLAT 2, PORTLAND PLACE | Flat | Leasehold | £77,000 |
| 20 Jan 2000 | 8, FLAT 4, PORTLAND PLACE | Flat | Leasehold | £73,000 |
| 7 Dec 1999 | 6, GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £52,950 |
| 29 Nov 1999 | 15 - 17, FLAT 8, PORTLAND PLACE | Flat | Leasehold | £109,950 |
| 10 Nov 1999 | 15 - 17, FLAT 10, PORTLAND PLACE | Flat | Leasehold | £85,000 |
| 15 Oct 1999 | 15 - 17, FLAT 7, PORTLAND PLACE | Flat | Leasehold | £79,950 |
| 3 Sep 1999 | 15 - 17, FLAT 12B, PORTLAND PLACE | Flat | Leasehold | £74,950 |
| 2 Jul 1999 | 15 - 17, FLAT 14, PORTLAND PLACE | Flat | Leasehold | £66,000 |
| 6 May 1999 | 10, FLAT 3, PORTLAND PLACE | Flat | Leasehold | £41,000 |
| 31 Mar 1999 | 9, LOWER GROUND FLOOR FLAT, PORTLAND PLACE | Flat | Leasehold | £56,000 |
| 30 Nov 1998 | 9, LOWER GROUND FLOOR FLAT, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £27,000 |
| 27 Nov 1998 | 15 - 17, FLAT 10, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £76,950 |
| 28 Sep 1998 | 15 - 17, FLAT 12, PORTLAND PLACE, BRIGHTON | Flat | Leasehold | £54,500 |
| 22 Sep 1998 | 10, FLAT 1, PORTLAND PLACE | Flat | Leasehold | £49,500 |