12, Thornhill Square
12, Thornhill Square
Description & Estimates
12, Thornhill Square is recorded publicly as a period freehold house across 2,034 ft2 of internal area, sitting on a 168 m2 plot.
Locally, houses of this size normally have 4 bedrooms with a garden.
Our estimate of the sale value of 12, Thornhill Square is £2,533,468 and its rental estimate is £10,253 per month, given the available information and assuming reasonable condition.
Thornhill Square, London, N1 falls within the N1 postal district, in the borough of Islington.
Our Data Sources
12, Thornhill Square has a single entry in the Land Registry from March 2018 and a single entry in the EPC database dated April 2025.
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 12, Thornhill Square, we estimate a market value of £2,660,141 and a rental value of £10,766 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £2,356,125 and £9,535 per month respectively.
Recent Market Change
Over the last year, 12, Thornhill Square has seen its estimated sale value move down by £56,758 (2.2%) and its estimated rental value increase by £682 per month (6.6%). This results in an estimated gross rental yield of 4.9%.
Plot Size
HM Land Registry records the plot of land for 12, Thornhill Square as measuring 168 m2.
That makes it the 18th largest plot in the postcode, where all 24 other houses have recorded plot data.
Energy Efficiency
12, Thornhill Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 08 Apr 2025.
The property is connected to mains gas and has some double glazing. It is heated using Boiler and underfloor heating, mains gas.
Sold Prices
The most recent sale of 12, Thornhill Square completed on 9th March 2018 at £1,851,888 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have dropped by 18.3% over the period since March 2018.
- Sold Mar 2018£1,851,888
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 12, Thornhill Square have sold within a radius of 300 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 27th January 2026, was 2, Lambert Street, London, N1 1JE, a freehold house which sold for £2,880,000.
Read more about house prices in N1.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Properties Let Nearby
Over the past 2 years our Estate Agent network has recorded 1 let within 300 metres of 12, Thornhill Square.
The latest, in November 2020, was 242A, Caledonian Road, London, N1 0NG, a leasehold flat let by Fine Living.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Location Comparison
Of the 102 addresses on Thornhill Square, London, N1, 12, Thornhill Square comes out as the 24th largest and the 17th most expensive in our analysis of the public data.
It is also £1.785m more expensive than the average property across the N1 district.
More reading links
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
From 12, Thornhill Square, the nearest station is Caledonian Road & Barnsbury, 300 metres away.
- 300mCaledonian Road & Barnsbury
- 1.0kmCaledonian Road
- 1.0kmAngel
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.
