Flat B, 17
Flat B, 17
Description & Estimates







Flat B, 17, John Spencer Square is recorded publicly as a mid-century leasehold apartment across 775 ft2 of internal area.
Locally, apartments of this size normally have 2 bedrooms.
Our estimate of the sale value of Flat B, 17, John Spencer Square is £766,852 and its rental estimate is £3,494 per month, given the available information and assuming reasonable condition.
17, John Spencer Square is a residential building on John Spencer Square, London, N1 and falls within the N1 postal district and the London Borough of Islington.
Our Data Sources
Flat B, 17, John Spencer Square has 41 entries in the Land Registry , most recently in October 2022 and a single entry in the EPC database dated August 2019.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For Flat B, 17, John Spencer Square, we estimate a market value of £805,195 and a rental value of £3,669 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £713,173 and £3,249 per month respectively.
Recent Market Change
Over the last year, Flat B, 17, John Spencer Square has seen its estimated sale value move down by £21,797 (2.8%) and its estimated rental value increase by £224 per month (6.4%). This results in an estimated gross rental yield of 5.5%.
Energy Efficiency
Flat B, 17, John Spencer Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 19 Aug 2019.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of Flat B, 17, John Spencer Square completed on 6th October 2022 at £785,000 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 34.0% over the period since October 2022.
- Sold Oct 2022£785,000
- Sold Nov 2011£530,000
- Sold Feb 2007£440,000
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to Flat B, 17, John Spencer Square have sold within a radius of 350 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 28th February 2025, was Flat H, 18, John Spencer Square, London, N1 2LZ, a leasehold flat which sold for £800,000.
Read more about house prices in N1.
- Sold Feb 2025£800,000 | 2 Bed Flat18, John Spencer SquareFlat H, 18, John Spencer Square, London, N1 2LZ
- Sold May 2024£824,000 | 2 Bed Flat17, John Spencer SquareFlat C, 17, John Spencer Square, London, N1 2LZ
- Sold Mar 2023£775,000 | 2 Bed Flat17, John Spencer SquareFlat G, 17, John Spencer Square, London, N1 2LZ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Similar Properties Let Nearby
Over the past 2 years our Estate Agent network has recorded 1 let of a property comparable to Flat B, 17, John Spencer Square, all within 350 metres.
The latest, in October 2025, was Flat 5, 14, Highbury New Park, London, N5 2DB, a leasehold flat let by Fine Living.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Location Comparison
Of the 68 addresses on John Spencer Square, London, N1, Flat B, 17, John Spencer Square comes out as the 47th largest and the 42nd most expensive in our analysis of the public data.
It is also £18k more expensive than the average property across the N1 district.
More reading links
Schools Nearby
- 200mCanonbury Primary School
- 400mLaycock Primary School
- 500mWilliam Tyndale Primary School
- 400mCity of London Academy Highbury Grove
- 800mHighbury Fields School
- 1.1kmCity of London Academy Islington
More reading links
Public Transport Nearby
From Flat B, 17, John Spencer Square, the nearest station is Highbury & Islington, 200 metres away.
- 200mHighbury & Islington
- 500mCanonbury
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.

