According to data from HM Land Registry, 21, Alexander Square sits on a plot of 96 m².

We have plot size data on 2 out of 4 other houses in the postcode and 21, Alexander Square sits on the 2nd largest plot.

21, Alexander Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 05 Dec 2023.

The property is connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 21, Alexander Square was last sold on 3rd May 2024 for £5,860,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since May 2024, the market for similar properties has dropped by 37.5%.

• Sold May 2024£5,860,000
• Sold May 2002£295,000

According to the Land Registry and our network of Estate Agents, there have been 20 sales of properties similar to 21, Alexander Square within a radius of 270 metres since 2008.

The most recent example is 15, Pelham Place, London, SW7 2NQ, a freehold house which sold for £6,235,000 on the 4th March 2026.

Read more about house prices in SW3.

• Sold Mar 2026£6,235,000 | 5 Bed House15, Pelham Place, London, SW7 2NQ15, Pelham Place, London, SW7 2NQ
• Sold Mar 2025£5,000,000 | 4 Bed House18, Pelham Place, London, SW7 2NH18, Pelham Place, London, SW7 2NH
• Sold Jul 2023£7,450,000 | 4 Bed House8, Crescent Place, London, SW3 2EA8, Crescent Place, London, SW3 2EA
• Sold Dec 2022£6,067,500 | 5 Bed House9, Alexander Place, London, SW7 2SG9, Alexander Place, London, SW7 2SG
• Sold Oct 2020£7,500,000 | 5 Bed House5, Pelham Place, London, SW7 2NQ5, Pelham Place, London, SW7 2NQ
• Sold Jan 2020£7,300,000 | 4 Bed House3, Pelham Place, London, SW7 2NQ3, Pelham Place, London, SW7 2NQ
• Sold Nov 2018£9,350,000 | 4 Bed House10, Pelham Crescent, London, SW7 2NP10, Pelham Crescent, London, SW7 2NP
• Sold Mar 2017£5,800,000 | 4 Bed House20, South Terrace, London, SW7 2TD20, South Terrace, London, SW7 2TD
• Sold Feb 2017£5,300,000 | 5 Bed House7, First Street, London, SW3 2LB7, First Street, London, SW3 2LB
• Sold Nov 2016£5,750,000 | 5 Bed House1, Pelham Place, London, SW7 2NQ1, Pelham Place, London, SW7 2NQ
• Sold Mar 2016£6,250,000 | 4 Bed House12, Pelham Place, London, SW7 2NH12, Pelham Place, London, SW7 2NH
• Sold Mar 2016£5,500,000 | 5 Bed House23, Alexander Square, London, SW3 2AU23, Alexander Square, London, SW3 2AU
• Sold Feb 2016£7,400,000 | 4 Bed House8, Alexander Square, London, SW3 2AY8, Alexander Square, London, SW3 2AY
• Sold Jan 2015£5,100,000 | 4 Bed House14, South Terrace, London, SW7 2TD14, South Terrace, London, SW7 2TD
• Sold Aug 2013£5,450,000 | 4 Bed House19, Alexander Place, London, SW7 2SG19, Alexander Place, London, SW7 2SG
• Sold Sep 2011£4,750,000 | 4 Bed House22, South Terrace, London, SW7 2TD22, South Terrace, London, SW7 2TD
• Sold Mar 2011£4,300,000 | 5 Bed House17, Alexander Place, London, SW7 2SG17, Alexander Place, London, SW7 2SG
• Sold Aug 2010£2,950,000 | 5 Bed House33, Hasker Street, London, SW3 2LE33, Hasker Street, London, SW3 2LE
• Sold Jul 2010£4,950,000 | 5 Bed House7, Thurloe Street, London, SW7 2SS7, Thurloe Street, London, SW7 2SS
• Sold Oct 2008£5,500,000 | 4 Bed House10, Pelham Place, London, SW7 2NH10, Pelham Place, London, SW7 2NH

Alexander Square, London, SW3 has a total of 20 addresses. According to our analysis of all the public data, 21, Alexander Square is the 18th largest and the 18th most expensive property on the street.

When compared to the postcode district it is £3.536m more expensive than the average property in SW3.

• Marlborough Primary School

  300 m away
• Oratory Roman Catholic Primary School

  500 m away
• St Joseph's Catholic Primary School

  500 m away

• St. Thomas More Language College

  500 m away
• Chelsea Academy

  2.1 km away
• Westminster City School

  2.1 km away

• South Kensington

  |

  400 m away
• Knightsbridge

  |

  700 m away
• Sloane Square

  |

  900 m away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.