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Belsize Square, NW3

Street in London

Median, last 3 years
£975,250
12 sales, Jun 2023 – May 2026
Last standard sale
£862,500
30 Jan 2026
Standard sales
282
since 1995

Figures count standard sales only (Price Paid category A). Additional entries (category B) - repossessions, buy-to-lets with an identifiable mortgage, and purchases by companies and other non-private buyers - are listed below but flagged.

Sale history (292 records · 88 homes sold more than once)

Address Price
27D, BELSIZE SQUARE
NW3 4HU · 30 Jan 2026 · Flat / maisonette
Previously £815,000 (Jun 2012) · +6%
£862,500
44A, BELSIZE SQUARE
NW3 4HN · 27 Aug 2025 · Flat / maisonette
£1,040,000
43D, BELSIZE SQUARE
NW3 4HN · 17 Jan 2025 · Flat / maisonette
Previously £1,315,000 (Oct 2014) · −5%
£1,250,000
FLAT 5, 8, BELSIZE SQUARE
NW3 4HT · 1 Nov 2024 · Flat / maisonette
Previously £720,000 (Jul 2008) · +51%
£1,090,000
46A, BELSIZE SQUARE
NW3 4HN · 16 Oct 2024 · Flat / maisonette
Previously £335,000 (Nov 1998) · +279%
£1,269,537
FLAT 2, 47, BELSIZE SQUARE
NW3 4HN · 13 Sep 2024 · Flat / maisonette
Previously £970,000 (Jun 2014) · −6%
£910,500
FLAT 5, 42, BELSIZE SQUARE
NW3 4HN · 19 Jul 2024 · Flat / maisonette
Previously £550,000 (Jul 2005) · +184%
£1,563,290
ENTRANCE FLOOR FLAT, 46, BELSIZE SQUARE
NW3 4HN · 28 Jun 2024 · Flat / maisonette
Previously £1,200,000 (May 2021) · +29%
£1,545,000
27, BELSIZE SQUARE Cat B
NW3 4HU · 31 May 2024 · Other
£1,000
27B, BELSIZE SQUARE
NW3 4HU · 31 May 2024 · Flat / maisonette
£675,000
27C, BELSIZE SQUARE
NW3 4HU · 31 May 2024 · Flat / maisonette
£594,000
FLAT 2, 5, BELSIZE SQUARE
NW3 4HT · 30 Oct 2023 · Flat / maisonette
Previously £450,000 (Nov 2009) · +73%
£780,000
10D, BELSIZE SQUARE
NW3 4HT · 19 Sep 2023 · Flat / maisonette
£617,500
FLAT 2, 50, BELSIZE SQUARE Cat B
NW3 4HN · 14 Jul 2023 · Flat / maisonette
Previously £649,000 (Apr 2012)
£840,000
FLAT 27, 35 - 36, BELSIZE SQUARE Cat B
NW3 4HL · 22 Mar 2023 · Flat / maisonette
£508,000
TOP FLOOR MAISONETTE, 23, BELSIZE SQUARE
NW3 4HU · 30 Nov 2022 · Flat / maisonette
£1,550,000
FLAT 4, 22, BELSIZE SQUARE
NW3 4HT · 15 Aug 2022 · Flat / maisonette
Previously £1,085,000 (Nov 2015) · +23%
£1,330,000
FLAT 5, 22, BELSIZE SQUARE
NW3 4HT · 25 May 2022 · Flat / maisonette
Previously £695,000 (Sep 2013) · +44%
£1,000,000
4E, BELSIZE SQUARE
NW3 4HT · 4 Mar 2022 · Flat / maisonette
Previously £480,000 (Jul 2015) · +8%
£519,000
15A, BELSIZE SQUARE
NW3 4HT · 25 Feb 2022 · Flat / maisonette
Previously £878,000 (Mar 2007) · +85%
£1,625,000
FLAT 2, 9, BELSIZE SQUARE
NW3 4HT · 29 Jun 2021 · Flat / maisonette
£1,200,000
FLAT 4, 39, BELSIZE SQUARE Cat B
NW3 4HL · 29 Jun 2021 · Flat / maisonette
£1,175,000
ENTRANCE FLOOR FLAT, 46, BELSIZE SQUARE
NW3 4HN · 21 May 2021 · Flat / maisonette
Previously £875,000 (Nov 2009) · +37%
£1,200,000
48, BELSIZE SQUARE
NW3 4HN · 1 Apr 2021 · Flat / maisonette
Previously £1,283,420 (Sep 2018)
£1,000,000
FIRST FLOOR FLAT, 23, BELSIZE SQUARE Cat B
NW3 4HU · 2 Mar 2021 · Flat / maisonette
£870,000
16D, BELSIZE SQUARE
NW3 4HT · 19 Feb 2021 · Flat / maisonette
£515,000
19, BELSIZE SQUARE
NW3 4HT · 22 Jan 2021 · Semi-detached
£5,600,000
41D, BELSIZE SQUARE
NW3 4HN · 8 Jan 2021 · Flat / maisonette
Previously £445,000 (Aug 2018)
£525,000
37D, BELSIZE SQUARE
NW3 4HL · 4 Dec 2020 · Flat / maisonette
Previously £1,300,000 (Jan 2014) · +8%
£1,405,000
14A, BELSIZE SQUARE
NW3 4HT · 13 Aug 2020 · Flat / maisonette
Previously £1,630,000 (Sep 2014) · −3%
£1,585,000
GROUND FLOOR FLAT, 23, BELSIZE SQUARE
NW3 4HU · 18 Jun 2020 · Flat / maisonette
Previously £480,000 (Sep 2009) · +34%
£645,000
FLAT 6, 38, BELSIZE SQUARE
NW3 4HL · 30 Apr 2020 · Flat / maisonette
Previously £499,950 (Jun 2010) · +56%
£780,000
FLAT 1, 9, BELSIZE SQUARE
NW3 4HT · 3 Apr 2020 · Flat / maisonette
Previously £1,100,000 (Jul 2007) · +33%
£1,464,500
18A, BELSIZE SQUARE
NW3 4HT · 2 Dec 2019 · Flat / maisonette
£1,490,000
GARDEN FLAT, 26, BELSIZE SQUARE
NW3 4HU · 2 Dec 2019 · Flat / maisonette
Previously £2,800,000 (Aug 2015) · −27%
£2,034,280
FLAT 1, 13, BELSIZE SQUARE
NW3 4HT · 28 Jun 2019 · Flat / maisonette
Previously £645,000 (Sep 2002) · +117%
£1,400,000
FLAT 1, 47, BELSIZE SQUARE
NW3 4HN · 23 May 2019 · Flat / maisonette
Previously £1,240,000 (May 2014) · −6%
£1,160,000
48, BELSIZE SQUARE Cat B
NW3 4HN · 13 Sep 2018 · Other
£1,283,420
FLAT 2, 15, BELSIZE SQUARE
NW3 4HT · 10 Aug 2018 · Flat / maisonette
Previously £895,000 (Jul 2012) · +42%
£1,275,000
41D, BELSIZE SQUARE Cat B
NW3 4HN · 10 Aug 2018 · Flat / maisonette
£445,000
FLAT E, 30, BELSIZE SQUARE
NW3 4HU · 18 Jun 2018 · Flat / maisonette
Previously £137,000 (Apr 1998) · +274%
£512,500
44B, BELSIZE SQUARE
NW3 4HN · 23 Mar 2018 · Flat / maisonette
£1,160,000
FLAT 4, 5, BELSIZE SQUARE
NW3 4HT · 31 Mar 2017 · Flat / maisonette
Previously £480,000 (Apr 2004) · +140%
£1,150,000
10C, BELSIZE SQUARE Cat B
NW3 4HT · 26 Aug 2016 · Flat / maisonette
£720,000
27A, BELSIZE SQUARE
NW3 4HU · 4 May 2016 · Flat / maisonette
Previously £620,000 (Jun 2010) · +44%
£895,000
12C, BELSIZE SQUARE
NW3 4HT · 31 Mar 2016 · Flat / maisonette
Previously £825,000 (Jul 2012) · +122%
£1,835,500
FLAT B, 28, BELSIZE SQUARE
NW3 4HU · 24 Mar 2016 · Flat / maisonette
Previously £450,000 (Dec 2005) · +109%
£940,000
16G, BELSIZE SQUARE
NW3 4HT · 1 Mar 2016 · Flat / maisonette
£602,500
41C, BELSIZE SQUARE
NW3 4HN · 19 Feb 2016 · Flat / maisonette
Previously £345,000 (Sep 2009) · +91%
£659,000
FLAT F, 10, BELSIZE SQUARE
NW3 4HT · 11 Jan 2016 · Flat / maisonette
Previously £372,500 (Aug 2005) · +121%
£825,000
FLAT 4, 22, BELSIZE SQUARE
NW3 4HT · 2 Nov 2015 · Flat / maisonette
£1,085,000
FLAT 3, 42, BELSIZE SQUARE Cat B
NW3 4HN · 14 Oct 2015 · Flat / maisonette
Previously £305,000 (Jul 2005)
£734,000
GARDEN FLAT, 26, BELSIZE SQUARE
NW3 4HU · 27 Aug 2015 · Flat / maisonette
Previously £800,000 (Jul 2013) · +250%
£2,800,000
FLAT 6, 9, BELSIZE SQUARE
NW3 4HT · 10 Aug 2015 · Flat / maisonette
Previously £559,000 (Sep 2007) · +43%
£800,000
49, BELSIZE SQUARE
NW3 4HN · 15 Jul 2015 · Semi-detached
Previously £3,150,000 (Aug 2001) · +84%
£5,800,000
4E, BELSIZE SQUARE
NW3 4HT · 3 Jul 2015 · Flat / maisonette
£480,000
FLAT 2, 22, BELSIZE SQUARE
NW3 4HT · 25 Jun 2015 · Flat / maisonette
£1,450,000
FLAT 1, 38, BELSIZE SQUARE
NW3 4HL · 17 Jun 2015 · Flat / maisonette
Previously £405,000 (Nov 2007) · +65%
£670,000
FLAT 4, 42, BELSIZE SQUARE
NW3 4HN · 5 Jun 2015 · Flat / maisonette
Previously £420,000 (Apr 2011) · +67%
£700,000
43A, BELSIZE SQUARE
NW3 4HN · 27 May 2015 · Flat / maisonette
£1,230,500
FLAT 2, 42, BELSIZE SQUARE
NW3 4HN · 1 May 2015 · Flat / maisonette
£2,150,000
FLAT 2, 13, BELSIZE SQUARE
NW3 4HT · 6 Mar 2015 · Flat / maisonette
Previously £402,500 (Aug 1999) · +209%
£1,245,000
GARDEN FLAT, 23, BELSIZE SQUARE
NW3 4HU · 3 Feb 2015 · Flat / maisonette
Previously £780,000 (Dec 2007) · +21%
£945,000
FLAT 3, 18, BELSIZE SQUARE
NW3 4HT · 23 Jan 2015 · Flat / maisonette
Previously £625,000 (Jun 2006) · +214%
£1,960,000
43D, BELSIZE SQUARE
NW3 4HN · 31 Oct 2014 · Flat / maisonette
Previously £665,000 (Nov 2009) · +98%
£1,315,000
14A, BELSIZE SQUARE
NW3 4HT · 19 Sep 2014 · Flat / maisonette
Previously £602,500 (Feb 2006) · +171%
£1,630,000
FLAT 1, 22, BELSIZE SQUARE
NW3 4HT · 2 Sep 2014 · Flat / maisonette
Previously £885,000 (Jul 2009) · +76%
£1,560,000
FLAT 3, 47, BELSIZE SQUARE
NW3 4HN · 30 Jun 2014 · Flat / maisonette
£980,000
FLAT 2, 47, BELSIZE SQUARE
NW3 4HN · 26 Jun 2014 · Flat / maisonette
£970,000
FLAT A, 30, BELSIZE SQUARE Cat B
NW3 4HU · 10 Jun 2014 · Other
Previously £805,000 (Jun 2008)
£45,395
FLAT 1, 47, BELSIZE SQUARE
NW3 4HN · 28 May 2014 · Flat / maisonette
£1,240,000
FLAT 2, 40, BELSIZE SQUARE
NW3 4HL · 28 Apr 2014 · Flat / maisonette
Previously £810,800 (Dec 2009) · +63%
£1,320,008
37D, BELSIZE SQUARE
NW3 4HL · 31 Jan 2014 · Flat / maisonette
Previously £807,000 (Jul 2009) · +61%
£1,300,000
FLAT 2, 39, BELSIZE SQUARE
NW3 4HL · 14 Jan 2014 · Flat / maisonette
Previously £460,000 (Jul 2008) · +30%
£600,000
TOP FLAT, 6, BELSIZE SQUARE
NW3 4HT · 18 Dec 2013 · Flat / maisonette
Previously £1,280,000 (Jul 2013) · +27%
£1,620,000
10E, BELSIZE SQUARE
NW3 4HT · 6 Dec 2013 · Flat / maisonette
Previously £400,000 (Oct 2011) · +56%
£625,000
GROUND FLOOR FLAT, 14, BELSIZE SQUARE
NW3 4HT · 31 Oct 2013 · Flat / maisonette
Previously £470,000 (Dec 2002) · +177%
£1,300,000
REAR BASEMENT FLAT, 48, BELSIZE SQUARE
NW3 4HN · 18 Oct 2013 · Flat / maisonette
Previously £340,000 (Mar 2010) · +54%
£525,000
FLAT 5, 22, BELSIZE SQUARE
NW3 4HT · 2 Sep 2013 · Flat / maisonette
£695,000
TOP FLAT, 6, BELSIZE SQUARE
NW3 4HT · 25 Jul 2013 · Flat / maisonette
£1,280,000
GARDEN FLAT, 26, BELSIZE SQUARE
NW3 4HU · 5 Jul 2013 · Flat / maisonette
£800,000
41A, BELSIZE SQUARE
NW3 4HN · 14 Feb 2013 · Flat / maisonette
£1,430,000
26D, BELSIZE SQUARE
NW3 4HU · 10 Jan 2013 · Terraced
£575,000
FLAT 4, 8, BELSIZE SQUARE
NW3 4HT · 9 Nov 2012 · Flat / maisonette
Previously £425,000 (Mar 2009) · +38%
£585,000
FLAT D, 30, BELSIZE SQUARE
NW3 4HU · 27 Sep 2012 · Flat / maisonette
Previously £430,000 (Mar 2006) · +101%
£865,000
14D, BELSIZE SQUARE
NW3 4HT · 23 Aug 2012 · Flat / maisonette
£1,070,000
FLAT 2, 15, BELSIZE SQUARE
NW3 4HT · 27 Jul 2012 · Flat / maisonette
Previously £530,000 (Nov 2003) · +69%
£895,000
12C, BELSIZE SQUARE
NW3 4HT · 3 Jul 2012 · Flat / maisonette
Previously £570,000 (Jul 2006) · +45%
£825,000
27D, BELSIZE SQUARE
NW3 4HU · 13 Jun 2012 · Flat / maisonette
Previously £322,000 (Jun 2000) · +153%
£815,000
FLAT 2, 50, BELSIZE SQUARE
NW3 4HN · 24 Apr 2012 · Flat / maisonette
Previously £347,000 (Jul 2003) · +87%
£649,000
FLAT 5, 38, BELSIZE SQUARE
NW3 4HL · 14 Mar 2012 · Flat / maisonette
Previously £223,000 (Jun 2004) · +60%
£357,500
FLAT B, 30, BELSIZE SQUARE
NW3 4HU · 22 Dec 2011 · Flat / maisonette
£640,000
SECOND FLOOR FLAT, 37, BELSIZE SQUARE
NW3 4HL · 15 Dec 2011 · Flat / maisonette
Previously £695,000 (Sep 2004) · +33%
£925,000
10E, BELSIZE SQUARE
NW3 4HT · 28 Oct 2011 · Flat / maisonette
£400,000
17A, BELSIZE SQUARE
NW3 4HT · 28 Jun 2011 · Flat / maisonette
Previously £212,000 (Oct 1996) · +372%
£1,000,000
FLAT 2, 11, BELSIZE SQUARE
NW3 4HT · 16 Jun 2011 · Flat / maisonette
Previously £721,000 (Feb 2006) · +46%
£1,050,000
FLAT 4, 42, BELSIZE SQUARE
NW3 4HN · 12 Apr 2011 · Flat / maisonette
Previously £279,000 (May 2005) · +51%
£420,000
39A, BELSIZE SQUARE
NW3 4HL · 1 Apr 2011 · Flat / maisonette
Previously £610,000 (Sep 2003) · +89%
£1,150,000
FLAT C, 28, BELSIZE SQUARE
NW3 4HU · 4 Mar 2011 · Flat / maisonette
Previously £875,000 (May 2007) · +7%
£932,000
FLAT 4, 9, BELSIZE SQUARE
NW3 4HT · 18 Oct 2010 · Flat / maisonette
Previously £155,000 (Jul 1999) · +174%
£424,500

Cat B An additional Price Paid entry (category B): a repossession, a buy-to-let with an identifiable mortgage, a purchase by a company or other non-private buyer, or a sale of another kind of property. Left out of every average.