9, First Street occupies a 78 m² plot as recorded by HM Land Registry.

Of the 20 other houses in this postcode, 19 have recorded plot sizes, and this one ranks as the 6th largest.

9, First Street has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 30 Apr 2026.

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

9, First Street last changed hands on 29th July 2019, selling for £3,850,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 4 times since 1995.

The market for similar properties has risen by 2.8% since July 2019.

• Sold Jul 2019£3,850,000
• Sold Jan 2010£3,100,000
• Sold May 2004£1,650,000

Land Registry records and our Estate Agent network show 67 sales of comparable properties within 260 metres of 9, First Street since 2014.

Most recently, 14, Ovington Street, London, SW3 2JB, a freehold house, sold at £3,125,000 on the 19th February 2026.

Read more about house prices in SW3.

• Sold Feb 2026£3,125,000 | 4 Bed House14, Ovington Street, London, SW3 2JB14, Ovington Street, London, SW3 2JB
• Sold Jan 2026£3,700,000 | 4 Bed House26, Ovington Street, London, SW3 2JB26, Ovington Street, London, SW3 2JB
• Sold Sep 2025£4,650,000 | 4 Bed House58, Ovington Street, London, SW3 2JB58, Ovington Street, London, SW3 2JB
• Sold Jul 2025£4,175,000 | 4 Bed House12, Ovington Street, London, SW3 2JB12, Ovington Street, London, SW3 2JB
• Sold Jul 2025£3,700,000 | 4 Bed House14, First Street, London, SW3 2LD14, First Street, London, SW3 2LD
• Sold Apr 2025£3,175,000 | 4 Bed House2, Ovington Street, London, SW3 2JB2, Ovington Street, London, SW3 2JB
• Sold Mar 2025£4,575,000 | 4 Bed House25, Ovington Street, London, SW3 2JA25, Ovington Street, London, SW3 2JA
• Sold Feb 2025£3,400,000 | 4 Bed House31, Ovington Street, London, SW3 2JA31, Ovington Street, London, SW3 2JA
• Sold Sep 2024£3,028,500 | 4 Bed House1, Halsey Street, London, SW3 2QH1, Halsey Street, London, SW3 2QH
• Sold Mar 2024£3,900,000 | 4 Bed House50, First Street, London, SW3 2LD50, First Street, London, SW3 2LD
• Sold Aug 2023£4,750,000 | 4 Bed House40, Ovington Street, London, SW3 2JB40, Ovington Street, London, SW3 2JB
• Sold Jun 2023£3,000,000 | 4 Bed House7, Halsey Street, London, SW3 2QH7, Halsey Street, London, SW3 2QH
• Sold Jan 2023£3,850,000 | 4 Bed House28, Ovington Street, London, SW3 2JB28, Ovington Street, London, SW3 2JB
• Sold Oct 2022£3,500,000 | 4 Bed House55, Hasker Street, London, SW3 2LE55, Hasker Street, London, SW3 2LE
• Sold Jul 2022£3,950,000 | 4 Bed House6, Halsey Street, London, SW3 2QH6, Halsey Street, London, SW3 2QH
• Sold Jun 2021£4,500,000 | 4 Bed House48, Ovington Street, London, SW3 2JB48, Ovington Street, London, SW3 2JB
• Sold Mar 2021£9,350,000 | 4 Bed House42, Ovington Street, London, SW3 2JB42, Ovington Street, London, SW3 2JB
• Sold Apr 2019£3,850,000 | 4 Bed House27, Ovington Street, London, SW3 2JA27, Ovington Street, London, SW3 2JA
• Sold Jan 2018£2,950,000 | 4 Bed House10, First Street, London, SW3 2LD10, First Street, London, SW3 2LD
• Sold May 2014£3,715,000 | 4 Bed House9, Hasker Street, London, SW3 2LE9, Hasker Street, London, SW3 2LE

Our analysis of the public data ranks 9, First Street as the 3rd largest and the 3rd most expensive of the 53 addresses on First Street, London, SW3.

Against the SW3 postcode district average, it is £1.946m more expensive than the typical property.

• Marlborough Primary School

  200 m away
• St Joseph's Catholic Primary School

  300 m away
• Oratory Roman Catholic Primary School

  500 m away

• St. Thomas More Language College

  300 m away
• Westminster City School

  1.9 km away
• Pimlico Academy

  2.1 km away

• South Kensington

  |

  600 m away
• Knightsbridge

  |

  600 m away
• Sloane Square

  |

  700 m away

Environment Agency data suggests this area has a Very Low risk of flooding.