HM Land Registry records the plot of land for 20, Markham Square as measuring 101 m².

That makes it the 9th largest plot in the postcode, where all 18 other houses have recorded plot data.

20, Markham Square has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 27 Jun 2012.

The property is not connected to mains gas and has single glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 20, Markham Square completed on 3rd December 2013 at £5,250,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 8.7% over the period since December 2013.

• Sold Dec 2013£5,250,000
• Sold Jan 2012£4,250,000

Since 2007 29 properties similar to 20, Markham Square have sold within a radius of 240 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 18th July 2025, was 47, Markham Square, London, SW3 4XA, a freehold house which sold for £5,100,000.

Read more about house prices in SW3.

• Sold Jul 2025£5,100,000 | 5 Bed House47, Markham Square, London, SW3 4XA47, Markham Square, London, SW3 4XA
• Sold Jun 2025£4,550,000 | 5 Bed House8, Markham Square, London, SW3 4UY8, Markham Square, London, SW3 4UY
• Sold May 2025£5,650,000 | 5 Bed House15, Astell Street, London, SW3 3RT15, Astell Street, London, SW3 3RT
• Sold Sep 2024£6,300,000 | 4 Bed House25, Sloane Avenue, London, SW3 3JB25, Sloane Avenue, London, SW3 3JB
• Sold Oct 2023£5,375,000 | 5 Bed House22, Royal Avenue, London, SW3 4QF22, Royal Avenue, London, SW3 4QF
• Sold Jul 2023£5,750,000 | 5 Bed House21, Markham Square, London, SW3 4UY21, Markham Square, London, SW3 4UY
• Sold Jun 2023£4,475,000 | 5 Bed House13, Jubilee Place, London, SW3 3TD13, Jubilee Place, London, SW3 3TD
• Sold May 2022£4,700,000 | 4 Bed House33, Wellington Square, London, SW3 4NR33, Wellington Square, London, SW3 4NR
• Sold Aug 2021£5,800,000 | 5 Bed House6, Wellington Square, London, SW3 4NJ6, Wellington Square, London, SW3 4NJ
• Sold Mar 2021£5,200,000 | 5 Bed House32, Markham Square, London, SW3 4XA32, Markham Square, London, SW3 4XA
• Sold Mar 2021£5,400,000 | 5 Bed House18, Radnor Walk, London, SW3 4BN18, Radnor Walk, London, SW3 4BN
• Sold Jun 2020£4,350,000 | 5 Bed House31, Smith Street, London, SW3 4ER31, Smith Street, London, SW3 4ER
• Sold Mar 2020£5,700,000 | 4 Bed House33, Markham Square, London, SW3 4XA33, Markham Square, London, SW3 4XA
• Sold Dec 2018£5,700,000 | 5 Bed House7, Markham Square, London, SW3 4UY7, Markham Square, London, SW3 4UY
• Sold Sep 2018£6,525,000 | 5 Bed House41, Markham Square, London, SW3 4XA41, Markham Square, London, SW3 4XA
• Sold Oct 2016£4,900,000 | 5 Bed House18, Astell Street, London, SW3 3RU18, Astell Street, London, SW3 3RU
• Sold May 2013£6,000,000 | 5 Bed House34, Markham Square, London, SW3 4XA34, Markham Square, London, SW3 4XA
• Sold Oct 2010£5,100,000 | 5 Bed House16, Royal Avenue, London, SW3 4QF16, Royal Avenue, London, SW3 4QF
• Sold Sep 2007£4,651,000 | 5 Bed House35, Markham Square, London, SW3 4XA35, Markham Square, London, SW3 4XA
• Sold Jul 2007£3,500,000 | 4 Bed House22, Markham Square, London, SW3 4UY22, Markham Square, London, SW3 4UY

Of the 62 addresses on Markham Square, London, SW3, 20, Markham Square comes out as the 31st largest and the 28th most expensive in our analysis of the public data.

It is also £3.252m more expensive than the average property across the SW3 district.

• Marlborough Primary School

  300 m away
• Oratory Roman Catholic Primary School

  400 m away
• St Joseph's Catholic Primary School

  400 m away

• St. Thomas More Language College

  400 m away
• Saint John Bosco College

  1.7 km away
• Chelsea Academy

  1.8 km away

• Sloane Square

  |

  600 m away
• South Kensington

  |

  800 m away
• Knightsbridge

  |

  1.1 km away

The flood risk here is rated Very Low, based on Environment Agency data.