21, Castle Street has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 25 Aug 2020.

The property is not connected to mains gas and has high performance glazing. It is heated using community scheme.

21, Castle Street last changed hands on 20th November 2025, selling for £525,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has dropped by 38.5% since November 2025.

• Sold Nov 2025£525,000
• Sold Sep 2020£600,000

Land Registry records and our Estate Agent network show 36 sales of comparable properties within 250 metres of 21, Castle Street since 2020.

Most recently, 11, Castle Street, London, E13 9GN, a leasehold flat, sold at £575,000 on the 12th March 2026.

Read more about house prices in E13.

• Sold Mar 2026£575,000 | 3 Bed Flat11, Castle Street, London, E13 9GN11, Castle Street, London, E13 9GN
• Sold Feb 2026£550,000 | 3 Bed Flat3, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ3, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold May 2025£610,000 | 3 Bed Flat2, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ2, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Nov 2022£640,000 | 3 Bed Flat10, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ10, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Aug 2021£599,000 | 3 Bed Flat4, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ4, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Nov 2020£620,000 | 3 Bed Flat1, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ1, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Sep 2020£600,000 | 3 Bed Flat7, Castle Street, London, E13 9GN7, Castle Street, London, E13 9GN
• Sold Sep 2020£599,000 | 3 Bed Flat21A, Castle Street, London, E13 9GN21A, Castle Street, London, E13 9GN
• Sold Sep 2020£590,000 | 3 Bed Flat23, Castle Street, London, E13 9GN23, Castle Street, London, E13 9GN
• Sold Sep 2020£600,000 | 3 Bed Flat23A, Castle Street, London, E13 9GN23A, Castle Street, London, E13 9GN
• Sold Sep 2020£599,000 | 3 Bed Flat17, Castle Street, London, E13 9GN17, Castle Street, London, E13 9GN
• Sold Sep 2020£600,000 | 3 Bed Flat15, Castle Street, London, E13 9GN15, Castle Street, London, E13 9GN
• Sold Sep 2020£581,030 | 3 Bed Flat13, Castle Street, London, E13 9GN13, Castle Street, London, E13 9GN
• Sold Sep 2020£600,000 | 3 Bed Flat9, Castle Street, London, E13 9GN9, Castle Street, London, E13 9GN
• Sold Sep 2020£581,030 | 3 Bed Flat8, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ8, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Aug 2020£599,000 | 3 Bed Flat7, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ7, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Aug 2020£595,000 | 3 Bed Flat9, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ9, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Aug 2020£599,000 | 3 Bed Flat6, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ6, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Aug 2020£545,000 | 3 Bed Flat16, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ16, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ
• Sold Aug 2020£595,000 | 3 Bed Flat5, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ5, Ruffle House 4-14, Shipbuilding Way, London, E13 9GJ

Our analysis of the public data ranks 21, Castle Street as the 5th largest and the 16th most expensive of the 137 addresses on Castle Street, London, E13.

Against the E13 postcode district average, it is £181k more expensive than the typical property.

• St Edward's Catholic Primary School

  200 m away
• Central Park Primary School

  400 m away
• Cleves Primary School

  400 m away

• Lister Community School

  900 m away
• Brampton Manor Academy

  1.0 km away
• Plashet, City of London Academy

  1.1 km away

• Upton Park

  |

  500 m away
• East Ham

  |

  1.2 km away
• Plaistow

  |

  1.5 km away

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