21, Blair Close has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 02 Sep 2010.

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

The most recent sale of 21, Blair Close completed on 9th November 2015 at £426,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold 4 times.

Values of comparable properties have dropped by 12.7% over the period since November 2015.

Since 2010 36 properties similar to 21, Blair Close have sold within a radius of 320 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 29th May 2026, was 17, Upper Bardsey Walk, London, N1 2RZ, a leasehold flat which sold for £500,000.

Read more about house prices in N1.

• Sold May 2026£500,000 | 2 Bed Flat17, Upper Bardsey Walk, London, N1 2RZ17, Upper Bardsey Walk, London, N1 2RZ
• Sold Jan 2026£325,500 | 1 Bed Flat38, Spring Gardens, London, N5 2DT38, Spring Gardens, London, N5 2DT
• Sold Dec 2025£350,000 | 2 Bed Flat39, Spring Gardens, London, N5 2DT39, Spring Gardens, London, N5 2DT
• Sold Aug 2025£455,000 | 1 Bed Flat105C , Grosvenor Avenue, London, N5 2NL105C , Grosvenor Avenue, London, N5 2NL
• Sold Jun 2024£427,500 | 1 Bed Flat87C , Grosvenor Avenue, London, N5 2NL87C , Grosvenor Avenue, London, N5 2NL
• Sold Aug 2023£425,000 | 2 Bed Flat47, Northampton Park, London, N1 2PP47, Northampton Park, London, N1 2PP
• Sold Jul 2023£450,000 | 2 Bed Flat15, Upper Bardsey Walk, London, N1 2RZ15, Upper Bardsey Walk, London, N1 2RZ
• Sold Jun 2023£360,000 | 2 Bed Flat24, Spring Gardens, London, N5 2DT24, Spring Gardens, London, N5 2DT
• Sold Apr 2023£430,000 | 1 Bed Flat41, Northampton Park, London, N1 2PP41, Northampton Park, London, N1 2PP
• Sold Sep 2022£450,000 | 1 Bed FlatFlat 1, 25, Ramsey Walk, London, N1 2NJFlat 1, 25, Ramsey Walk, London, N1 2NJ
• Sold Sep 2021£476,000 | 2 Bed Flat47D , St. Pauls Road, London, N1 2LT47D , St. Pauls Road, London, N1 2LT
• Sold Sep 2021£282,000 | 2 Bed Flat38, Upper Caldy Walk, London, N1 2QS38, Upper Caldy Walk, London, N1 2QS
• Sold Jun 2021£405,000 | 1 Bed FlatFlat 1, 24, Ramsey Walk, London, N1 2NHFlat 1, 24, Ramsey Walk, London, N1 2NH
• Sold Jun 2021£375,000 | 2 Bed FlatFlat 4, 24, Ramsey Walk, London, N1 2NHFlat 4, 24, Ramsey Walk, London, N1 2NH
• Sold Nov 2020£365,000 | 2 Bed Flat30, Blair Close, London, N1 2YP30, Blair Close, London, N1 2YP
• Sold Jul 2020£356,000 | 2 Bed Flat18, Upper Bardsey Walk, London, N1 2RZ18, Upper Bardsey Walk, London, N1 2RZ
• Sold Oct 2019£385,000 | 2 Bed Flat7, Upper Bardsey Walk, London, N1 2RZ7, Upper Bardsey Walk, London, N1 2RZ
• Sold Jan 2017£415,000 | 2 Bed Flat24, Blair Close, London, N1 2YP24, Blair Close, London, N1 2YP
• Sold Jan 2014£350,000 | 2 Bed Flat26, Blair Close, London, N1 2YP26, Blair Close, London, N1 2YP
• Sold May 2010£260,000 | 2 Bed Flat25, Blair Close, London, N1 2YP25, Blair Close, London, N1 2YP

Over the past 2 years our Estate Agent network has recorded 1 let within 320 metres of 21, Blair Close.

The latest, in October 2025, was Flat 5, 14, Highbury New Park, London, N5 2DB, a leasehold flat let by Fine Living.

• 
  Let agreed Oct 2025£ Undisclosed | 2 Bed FlatFlat 5, 14, Highbury New Park, London, N5 2DBFlat 5, 14, Highbury New Park, London, N5 2DB

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

Of the 34 addresses on Blair Close, London, N1, 21, Blair Close comes out as the 30th largest and the 30th most expensive in our analysis of the public data.

It is also £344k less expensive than the average property across the N1 district.

• Canonbury Primary School

  600 m away
• Newington Green Primary School

  800 m away
• William Tyndale Primary School

  800 m away

• City of London Academy Highbury Grove

  400 m away
• Highbury Fields School

  800 m away
• City of London Academy Islington

  1.3 km away

• Canonbury

  |

  100 m away
• Highbury & Islington

  |

  600 m away

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