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Get started4 Canonbury Square is a two-bedroom mid-terrace house in Islington, London, London (N1 2AU). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to before 1900 and council tax band E. At 71 m² this is the 4th smallest of 11 units on EPC record in the building, where floor areas span 39–242 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (July 2022) shows a C (score 70). Earlier certificates rated it B (March 2009); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 81).
Today's modelled estimate of £692,000 sits 134.6% above the 2011 sale of £295,000. 12 planning records sit against the property, 9 approved, 2 refused. Past consents include subdivision, meaningful when judging how the property has evolved. The record references listed-building consent and conservation-area consent, which constrain future alterations. Its energy rating outperforms most of the postcode (better than 80% of similar EPCs). On the market in September 2011 and unlisted since — roughly 15 years.
Council records show a subdivision application — the property's legal arrangement has been altered.
External fenestration alterations to front and rear elevations and internal alterations to layout associated with incorporating the lower floor flat at No. 4 Canonbury Square with the lower/upper ground floor flat at No. 3 Canonbury Square to form a new maisonette.
£692,000
Modelled from EPC, postcode comparables.
£295,000
Recorded with HM Land Registry.
EPC Rating for 4 Canonbury Square runs comfortably ahead of the street norm.
Price per m²
£4,155
Street avg £8,096
Floor Area
71 m²
Street avg 69 m²
Habitable Rooms
3 rooms
Rail-style transport is unusually close for this postcode.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.0 km
Canonbury Square — bus stop.

Daytime· 07:00 – 23:00
57.1dB

Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
Low energy lighting percentage decreased
Heating controls upgraded for better temperature management
Heating controls changed
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
External fenestration alterations to front and rear elevations associated with incorporating the lower floor flat at No. 4 Canonbury Square with the lower/upper ground floor flat at No. 3 Canonbury Square to form a new maisonette.
10 more applications for this property
Join to see all planning history.
30 September 2011Most recent
£295,000
Median price across the last 5 sales in N1 2AU: £1,450,000 (2025–2020).
First Floor Flat 12 Canonbury Square London
Sold Sept 2025
6 Canonbury Square Islington London
Sold Sept 2024
Basement Flat 11 Canonbury Square Islington London
Sold May 2023
2 Canonbury Square Islington London
Sold Sept 2022
7 Canonbury Square Islington London
Sold Sept 2020
Street avg 3 rooms
CO₂ Emissions
2.4 t/year
Street avg 3.2 t/year
N1 2AS
Closest school
0.1 km
William Tyndale Primary School. 101 schools nearby.
Night-time· 23:00 – 07:00
47.8dB
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