Flat 15, 120 St John Street, London, EC1V 4JS
About Flat 15
Flat 15 is a mid-terrace house in London (EC1V 4JS). It has a recorded floor area of 11 m² (around 118 sq ft) and construction records dating it to 2007 onwards. At 11 m² this is the smallest unit on EPC record across the building (11–27 m²). The building's EPC ratings span C to B, with this unit at the bottom. The latest certificate (October 2013) shows a C (score 79), near the top of the C band. Main heating runs on electricity. The latest certificate is from October 2013, so improvements made since then won't be reflected.
At 11 m² it sits well below the postcode median (16 m² across 22 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at Flat 15
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Flat 15's carbon output is low for the local stock.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 13 Oct 2023
EPC Rating
Planning history
Flat 15 has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
Flat 15 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£399,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 4 sales in EC1V 4JS: £2,475,000 (2025–2007).
Everything we know about Flat 15, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?
Versus other St John Street homes
On floor area, Flat 15 runs well behind the street norm.
EPC Rating
79 (C)
Street avg 77 (C)
Floor Area
11 m²
Street avg 25 m²
CO₂ Emissions
0.8 t/year
Street avg 1.4 t/year
Habitable Rooms
1 rooms
Street avg 1 rooms
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The neighbourhood at a glance
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
St John Street /Clerkenwell Rd — bus stop.
Closest school
0.2 km
St Peter and St Paul Catholic Primary School. 95 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
59.7dB
Night-time· 23:00 – 07:00
50.5dB