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Get started3 Alwyne Square is a four-bedroom mid-terrace house in Islington, London, London (N1 2JX). It has a recorded floor area of 153 m² (around 1647 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (April 2021) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 84), a 2-band jump. Our model identifies extension potential, subject to local planning policy.
3 planning records sit against the property, 3 approved, 0 refused. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. Today's modelled estimate of £2,277,000 is 24.8% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£1,108/sq ft) was about 101.2% above the typical sold price in the postcode. Most recent transfer: September 2021 at £1,825,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Recommended upgrades on file would lift this property by multiple EPC bands.
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
Extension: Single storey · Rear of property
Application to erect a full-width, single-storey, rear extension at ground floor.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£2,277,000
Modelled from EPC, postcode comparables.
£1,825,000
Recorded with HM Land Registry.
3 Alwyne Square is notably below the street on epc rating.
Price per m²
£11,928
Street avg £9,210
Floor Area
153 m²
Street avg 160 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
Rail-style transport is unusually close for this postcode.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Highbury Grove — bus stop.

Daytime· 07:00 – 23:00
55.7dB

Construction of a rear-facing dormer in rear roof slope, and insertion of rooflights into front roof slope, with associated internal renovations.
1 more application for this property
Join to see all planning history.
30 September 2021Most recent
£1,825,000
Median price across the last 5 sales in N1 2JX: £1,850,000 (2025–2009).
CO₂ Emissions
5.5 t/year
Street avg 4.8 t/year
N1 2JX
Closest school
0.4 km
City of London Academy Highbury Grove. 102 schools nearby.
Night-time· 23:00 – 07:00
46.1dB
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