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Get started3 Keystone Crescent is a four-bedroom mid-terrace house in Islington, London, London (N1 9DS). It has a recorded floor area of 126 m² (around 1356 sq ft), construction records dating it to before 1900 and council tax band G. It is a listed building, which means external alterations are tightly controlled but it may qualify for heritage tax reliefs. The latest certificate (October 2018) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 78).
At 126 m² the property is well over the postcode median (89 m² across 21 EPCs), placing it in the larger end of the local stock. 7 planning records sit against the property, 3 approved, 2 refused. Past consents include an extension and new windows, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. Today's modelled estimate of £1,135,000 is 14.1% above the 2023 sale price. Sold February 2023 for £995,000.
A recent planning application at 3 Keystone Crescent was refused — worth checking the council file.
Extension: Single storey · Rear of property
Erection of a single-storey rear lower ground floor extension; erection of a rear dormer extension; reinstatement of the front garden and repair/reinstatement of cast-iron railings. Alterations to the existing windows on the front and rear elevations with associated secondary glazing; internal alterations.
3 Keystone Crescent valuation sits well clear of the typical sold price in this postcode.
£1,135,000
Modelled from EPC, postcode comparables.
£995,000
Recorded with HM Land Registry.
3 Keystone Crescent is notably below the street on price per m².
Price per m²
£7,897
Street avg £17,805
Floor Area
126 m²
Street avg 46 m²
Habitable Rooms
5 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
King's Cross /Pentonville Road — bus stop.

Daytime· 07:00 – 23:00
60.4dB

Extension: Single storey · Rear of property
Erection of a single-storey rear lower ground floor extension; erection of a rear dormer extension; reinstatement of the front garden and repair/reinstatement of cast-iron railings. Alterations to the existing windows on the front and rear elevations with associated secondary glazing; internal alterations.
5 more applications for this property
Join to see all planning history.
22 February 2023Most recent
£995,000
Median price across the last 5 sales in N1 9DS: £850,000 (2025–2021).
Street avg 3 rooms
CO₂ Emissions
4.9 t/year
Street avg 2.2 t/year
N1 9AY
Closest school
0.2 km
Winton Primary School. 74 schools nearby.
Night-time· 23:00 – 07:00
51.8dB
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