Flat 23, St. John's Mansion has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 05 Feb 2026.

The property is connected to mains gas and has single glazed windows. It is heated using a boiler and radiators (mains gas).

Flat 23, St. John's Mansion last changed hands on 12th June 2015, selling for £587,760. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold 3 times since 1995.

The market for similar properties has dropped by 10.7% since June 2015.

• Sold Jun 2015£587,760
• Sold Nov 2005£232,000
• Sold Dec 2000£142,500

Land Registry records and our Estate Agent network show 65 sales of comparable properties within 270 metres of Flat 23, St. John's Mansion since 2014.

Most recently, Flat 20, Kinnoul Mansions , Rowhill Road, London, E5 8EB, a leasehold flat, sold at £707,200 on the 6th February 2026.

Read more about house prices in E5.

• Sold Feb 2026£707,200 | 3 Bed FlatFlat 20, Kinnoul Mansions , Rowhill Road, London, E5 8EBFlat 20, Kinnoul Mansions , Rowhill Road, London, E5 8EB
• Sold Jan 2026£730,000 | 3 Bed FlatFlat 3, 9, Clapton Square, London, E5 8HPFlat 3, 9, Clapton Square, London, E5 8HP
• Sold Nov 2025£645,000 | 3 Bed Flat43, Clapton Square, London, E5 8HE43, Clapton Square, London, E5 8HE
• Sold Aug 2025£760,000 | 3 Bed FlatFlat 8, St. John's Mansion, Clapton Square, London, E5 8HTFlat 8, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold Feb 2025£660,000 | 2 Bed Flat19B , Clapton Square, London, E5 8HP19B , Clapton Square, London, E5 8HP
• Sold Feb 2025£647,500 | 3 Bed FlatFlat 32, Cavendish Mansions, Clapton Square, London, E5 8HRFlat 32, Cavendish Mansions, Clapton Square, London, E5 8HR
• Sold Oct 2024£760,000 | 3 Bed FlatFlat 32, St. John's Mansion, Clapton Square, London, E5 8HTFlat 32, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold Aug 2024£725,000 | 3 Bed FlatFlat 1, Rowhill Mansions , Rowhill Road, London, E5 8EDFlat 1, Rowhill Mansions , Rowhill Road, London, E5 8ED
• Sold Jul 2024£795,000 | 3 Bed FlatFlat 1, 41, Glenarm Road, London, E5 0LYFlat 1, 41, Glenarm Road, London, E5 0LY
• Sold Jan 2024£599,999 | 3 Bed Flat35C, Glenarm Road, London, E5 0LY35C, Glenarm Road, London, E5 0LY
• Sold Aug 2023£585,000 | 2 Bed Flat19D , Clapton Square, London, E5 8HP19D , Clapton Square, London, E5 8HP
• Sold Jun 2023£716,000 | 3 Bed FlatFlat 2, 9, Clapton Square, London, E5 8HPFlat 2, 9, Clapton Square, London, E5 8HP
• Sold Mar 2023£692,000 | 2 Bed FlatFlat 7, St. John's Mansion, Clapton Square, London, E5 8HTFlat 7, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold May 2022£710,000 | 3 Bed FlatFlat 12, St. John's Mansion, Clapton Square, London, E5 8HTFlat 12, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold Feb 2021£645,000 | 3 Bed FlatFlat 31, St. John's Mansion, Clapton Square, London, E5 8HTFlat 31, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold Jan 2021£680,000 | 3 Bed FlatFlat C, 19, Glenarm Road, London, E5 0LYFlat C, 19, Glenarm Road, London, E5 0LY
• Sold Jan 2021£585,000 | 3 Bed FlatFlat 10, St. John's Mansion, Clapton Square, London, E5 8HTFlat 10, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold Oct 2020£700,000 | 3 Bed FlatFlat 11, St. John's Mansion, Clapton Square, London, E5 8HTFlat 11, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold Sep 2019£125,000 | 2 Bed FlatFlat 3, St. John's Mansion, Clapton Square, London, E5 8HTFlat 3, St. John's Mansion, Clapton Square, London, E5 8HT
• Sold Oct 2014£520,000 | 3 Bed FlatFlat 5, St. John's Mansion, Clapton Square, London, E5 8HTFlat 5, St. John's Mansion, Clapton Square, London, E5 8HT

Our analysis of the public data ranks Flat 23, St. John's Mansion as the 62nd largest and the 39th most expensive of the 178 addresses on Clapton Square, London, E5.

Against the E5 postcode district average, it is £112k more expensive than the typical property.

• The Olive School, Hackney

  200 m away
• Millfields Community School

  500 m away
• St John and St James CofE Primary School

  500 m away

• Clapton Girls' Academy

  300 m away
• The City Academy, Hackney

  500 m away
• Mossbourne Community Academy

  600 m away

• Hackney Central

  |

  500 m away
• Hackney Downs

  |

  600 m away
• Homerton

  |

  900 m away

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