26, Cornwallis Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 May 2019.

The property is not connected to mains gas and has fully double glazed windows. It is heated using electric storage heaters.

26, Cornwallis Square last changed hands on 30th September 2025, selling for £335,000. 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 risen by 9.1% since September 2025.

• Sold Sep 2025£335,000
• Sold Feb 1999£63,750

Land Registry records and our Estate Agent network show 34 sales of comparable properties within 270 metres of 26, Cornwallis Square since 2011.

Most recently, Flat 41, Blenheim Court, Marlborough Road, London, N19 4HR, a leasehold flat, sold at £365,000 on the 1st August 2025.

Read more about house prices in N19.

• Sold Aug 2025£365,000 | 2 Bed FlatFlat 41, Blenheim Court, Marlborough Road, London, N19 4HRFlat 41, Blenheim Court, Marlborough Road, London, N19 4HR
• Sold Jul 2025£325,000 | 1 Bed FlatFlat 4, 656, Holloway Road, London, N19 3NUFlat 4, 656, Holloway Road, London, N19 3NU
• Sold Mar 2025£351,400 | 2 Bed Flat3, Ringmer Gardens, London, N19 4SB3, Ringmer Gardens, London, N19 4SB
• Sold Feb 2025£350,000 | 1 Bed Flat708B, Holloway Road, London, N19 3NL708B, Holloway Road, London, N19 3NL
• Sold Jun 2024£320,000 | 2 Bed FlatFlat 28, Blenheim Court, Marlborough Road, London, N19 4HRFlat 28, Blenheim Court, Marlborough Road, London, N19 4HR
• Sold Nov 2022£369,000 | 2 Bed Flat52, Cornwallis Square, London, N19 4LY52, Cornwallis Square, London, N19 4LY
• Sold Aug 2022£350,000 | 2 Bed FlatFlat 40, Blenheim Court, Marlborough Road, London, N19 4HRFlat 40, Blenheim Court, Marlborough Road, London, N19 4HR
• Sold Jun 2022£373,000 | 2 Bed Flat94, Kiver Road, London, N19 4PQ94, Kiver Road, London, N19 4PQ
• Sold Feb 2021£400,000 | 1 Bed Flat44B , Davenant Road, London, N19 3NN44B , Davenant Road, London, N19 3NN
• Sold Jan 2021£237,000 | 1 Bed Flat98, Kiver Road, London, N19 4PQ98, Kiver Road, London, N19 4PQ
• Sold Sep 2018£375,000 | 2 Bed FlatFlat 23, Blenheim Court, Marlborough Road, London, N19 4HRFlat 23, Blenheim Court, Marlborough Road, London, N19 4HR
• Sold Sep 2017£325,000 | 1 Bed FlatFlat 2, 254, Sussex Way, London, N19 4HYFlat 2, 254, Sussex Way, London, N19 4HY
• Sold Jul 2016£430,000 | 1 Bed FlatFlat 2, 658, Holloway Road, London, N19 3NUFlat 2, 658, Holloway Road, London, N19 3NU
• Sold May 2016£345,000 | 1 Bed FlatFlat 45, Blenheim Court, Marlborough Road, London, N19 4HRFlat 45, Blenheim Court, Marlborough Road, London, N19 4HR
• Sold Oct 2015£461,500 | 1 Bed Flat82, Kiver Road, London, N19 4PQ82, Kiver Road, London, N19 4PQ
• Sold Jan 2015£313,000 | 2 Bed Flat102, Kiver Road, London, N19 4PQ102, Kiver Road, London, N19 4PQ
• Sold Jan 2015£320,000 | 2 Bed Flat54, Cornwallis Square, London, N19 4LY54, Cornwallis Square, London, N19 4LY
• Sold Nov 2013£315,000 | 2 Bed Flat84, Kiver Road, London, N19 4PQ84, Kiver Road, London, N19 4PQ
• Sold Apr 2013£210,000 | 2 Bed FlatFlat 34, Blenheim Court, Marlborough Road, London, N19 4HRFlat 34, Blenheim Court, Marlborough Road, London, N19 4HR
• Sold Nov 2011£91,250 | 2 Bed Flat79, Cornwallis Square, London, N19 4LZ79, Cornwallis Square, London, N19 4LZ

Our analysis of the public data ranks 26, Cornwallis Square as the 95th largest and the 106th most expensive of the 108 addresses on Cornwallis Square, London, N19.

Against the N19 postcode district average, it is £291k less expensive than the typical property.

• Duncombe Primary School

  300 m away
• St Mark's CofE Primary School

  300 m away
• Yerbury Primary School

  500 m away

• City of London Academy, Highgate Hill

  500 m away
• Arts and Media School Islington

  700 m away
• St Aloysius' College

  1.1 km away

• Upper Holloway

  |

  300 m away
• Archway

  |

  700 m away
• Crouch Hill

  |

  900 m away

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