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Get started12a, Keystone Crescent, Islington, London, N1 9DS
About 12a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
12a is a mid-terrace house in Islington, London, London (N1 9DS). It has a recorded floor area of 33 m² (around 355 sq ft), construction records dating it to before 1900 and council tax band C. At 33 m² this is the smallest unit on EPC record across the building (33–126 m²). The building's EPC ratings span G to C, with this unit at the top. On EPC score it ranks first in the building (75 versus a worst of 6). The latest certificate (December 2022) shows a C (score 75), near the top of the C band. When first surveyed in August 2020 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Good.
At 33 m² it sits well below the postcode median (102 m² across 21 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). Today's modelled estimate of £358,000 is 17.4% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£859/sq ft) was about 31.9% above the typical sold price in the postcode. Most recent transfer: December 2021 at £305,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
12a's carbon output is low for the local stock.
Current Certificate(1 of 2)
Dec 2022
EPC Rating
A
B
C
C75
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
1.1 t/year
Occupancy
Rented
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
Current estimate
See how we calculated this£358,000
Modelled from EPC, postcode comparables.
Last sold (2021)
£305,000
Recorded with HM Land Registry.
Sales timeline
Versus other Keystone Crescent homes
Four headline reads against 6 similar flats on this street, drawn from the latest EPC and Land Registry data.
On epc rating, 12a stands well clear of the street.
Price per m²
£9,242
Street avg £17,469
Floor Area
33 m²
Street avg 61 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the London district page.
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.
Road noise across the postcode
Modelled day and night-time noise levels around N1 9DS from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
60.4dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 104 points of interest in total.
Beautiful places to visit nearby
Curated scenic spots within reach of this postcode, served by Beautifulplaces.ai. Photography and tagging come from their open dataset.
Common questions
The questions buyers, sellers and homeowners most often ask about 12a, Keystone Crescent, Islington, London, N1 9DS. Each answer is also embedded as structured data for search engines.