3A, Union Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 08 Oct 2020.

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

The most recent sale of 3A, Union Square completed on 7th November 2023 at £930,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold twice.

Values of comparable properties have dropped by 6.9% over the period since November 2023.

Since 2009 13 properties similar to 3A, Union Square have sold within a radius of 260 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 23rd February 2026, was 3, Clock Tower Mews, London, N1 7BB, a leasehold flat which sold for £1,010,000.

Read more about house prices in N1.

• Sold Feb 2026£1,010,000 | 3 Bed Flat3, Clock Tower Mews, London, N1 7BB3, Clock Tower Mews, London, N1 7BB
• Sold May 2025£1,115,000 | 3 Bed Flat18A, Rees Street, London, N1 7AR18A, Rees Street, London, N1 7AR
• Sold Feb 2024£800,000 | 3 Bed Flat36, Arlington Avenue, London, N1 7AY36, Arlington Avenue, London, N1 7AY
• Sold Jun 2022£940,000 | 2 Bed Flat30B, Linton Street, London, N1 7DX30B, Linton Street, London, N1 7DX
• Sold Jul 2021£473,000 | 3 Bed FlatFlat 19, Finnemore House, Britannia Row, London, N1 8QJFlat 19, Finnemore House, Britannia Row, London, N1 8QJ
• Sold Mar 2021£900,000 | 3 Bed FlatFlat 3, 26, Packington Street, London, N1 8QBFlat 3, 26, Packington Street, London, N1 8QB
• Sold Oct 2020£753,000 | 3 Bed Flat54A, St. Paul Street, London, N1 7DA54A, St. Paul Street, London, N1 7DA
• Sold Jul 2019£1,078,000 | 3 Bed FlatFlat 1, Islinghaus Apartments 125A, Packington Street, London, N1 7EAFlat 1, Islinghaus Apartments 125A, Packington Street, London, N1 7EA
• Sold Nov 2018£35,000 | 3 Bed FlatFlat 1, 26, Packington Street, London, N1 8QBFlat 1, 26, Packington Street, London, N1 8QB
• Sold Jul 2014£865,000 | 2 Bed Flat48B, Linton Street, London, N1 7AS48B, Linton Street, London, N1 7AS
• Sold Jun 2014£990,000 | 3 Bed Flat24, Linton Street, London, N1 7DX24, Linton Street, London, N1 7DX
• Sold Feb 2010£345,000 | 3 Bed FlatFlat 2, 87, Arlington Avenue, London, N1 7BAFlat 2, 87, Arlington Avenue, London, N1 7BA
• Sold Feb 2009£499,999 | 3 Bed Flat38A, Packington Street, London, N1 8QB38A, Packington Street, London, N1 8QB

Over the past 2 years our Estate Agent network has recorded 7 lets within 260 metres of 3A, Union Square.

The latest, in April 2022, was Flat 5, 14-22, Coleman Fields, London, N1 7AD, a leasehold flat let by Fine Living.

• 
  Let agreed Apr 2022£ Undisclosed | 2 Bed FlatFlat 5, 14-22, Coleman Fields, London, N1 7ADFlat 5, 14-22, Coleman Fields, London, N1 7AD
• 
  Let May 2021£ Undisclosed | 1 Bed FlatFlat 1, 14-22, Coleman Fields, London, N1 7ADFlat 1, 14-22, Coleman Fields, London, N1 7AD
• 
  Let Mar 2021£ Undisclosed | 2 Bed FlatFlat 10, 14-22, Coleman Fields, London, N1 7ADFlat 10, 14-22, Coleman Fields, London, N1 7AD
• 
  Let Dec 2020£ Undisclosed | 2 Bed FlatFlat 2, Montanaro Court 24, Coleman Fields, London, N1 7ADFlat 2, Montanaro Court 24, Coleman Fields, London, N1 7AD
• 
  Let Nov 2020£ Undisclosed | 2 Bed FlatFlat 5, Montanaro Court 24, Coleman Fields, London, N1 7ADFlat 5, Montanaro Court 24, Coleman Fields, London, N1 7AD
• 
  Let Nov 2020£ Undisclosed | 2 Bed FlatFlat 8, 14-22, Coleman Fields, London, N1 7ADFlat 8, 14-22, Coleman Fields, London, N1 7AD
• 
  Let Nov 2020£ Undisclosed | 2 Bed House22A, Coleman Fields, London, N1 7AD22A, Coleman Fields, London, N1 7AD

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Of the 33 addresses on Union Square, London, N1, 3A, Union Square comes out as the 31st largest and the 30th most expensive in our analysis of the public data.

It is also £191k more expensive than the average property across the N1 district.

• Thomas Fairchild Community School

  400 m away
• Rotherfield Primary School

  400 m away
• The New North Academy

  400 m away

• City of London Academy Islington

  200 m away
• Waterside Academy

  1.2 km away
• Elizabeth Garrett Anderson School

  1.3 km away

• Essex Road

  |

  500 m away
• Angel

  |

  900 m away
• Old Street

  |

  1.2 km away

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