4A, Thornhill Square
4A, Thornhill Square
Description & Estimates







The public record describes 4A, Thornhill Square as a period apartment with 1,033 ft2 of internal area.
In this area, apartments of this size normally have 3 bedrooms with a garden.
4A, Thornhill Square has an estimated sale value of £1,020,546 and an estimated rental value of £4,215 per month, assuming reasonable condition and based on the information available.
The apartment sits within 4, Thornhill Square, London, N1.
Thornhill Square, London, N1 lies in the borough of Islington, within the N1 postal district.
Our Data Sources
4A, Thornhill Square has no records in the the Land Registry and a single entry in the EPC database dated June 2023.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 4A, Thornhill Square would be worth £1,071,573, with a potential rental value of £4,426 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £949,108, with a rental value of £3,920 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Recent Market Change
The estimated sale value of 4A, Thornhill Square has fallen by £33,573 (3.3%) over the last year. During the same period, its estimated monthly rental value has moved up by £304 (7.2%). The property's estimated gross yield is currently 5.0%.
Energy Efficiency
4A, Thornhill Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 08 Jun 2023.
The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 290 metres of 4A, Thornhill Square across the last 2 years.
Most recently, 21A, Huntingdon Street, London, N1 1BS, a leasehold flat, sold at £1,220,000 on the 15th August 2025.
Read more about house prices in N1.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 4A, Thornhill Square as the 52nd largest and the 49th most expensive of the 102 addresses on Thornhill Square, London, N1.
Against the N1 postcode district average, it is £272k more expensive than the typical property.
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Schools Nearby
- 200mSt Andrew's (Barnsbury) CofE Primary School
- 300mThornhill Primary School
- 500mVittoria Primary School
- 800mElizabeth Garrett Anderson School
- 1.2kmCity of London Academy Islington
- 1.5kmRegent High School
More reading links
Public Transport Nearby
Caledonian Road & Barnsbury station is the nearest stop to 4A, Thornhill Square at 300 metres away.
- 300mCaledonian Road & Barnsbury
- 1.0kmCaledonian Road
- 1.0kmAngel
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.

