128 St John Street, Islington, London, EC1V 4JS
About 128 St John Street
128 St John Street is a semi-detached house in Islington, London, London (EC1V 4JS). It has a recorded floor area of 25 m² (around 269 sq ft) and construction records dating it to 1950-1966. At 25 m² this is the smallest unit on EPC record across the building (25–91 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (55 versus a best of 74). The latest certificate (May 2019) shows a D (score 55), a step below the typical UK home. The recommended improvements would push it to C (score 73). Main heating runs on to be used only when there is no heating/hot.
At 25 m² the property is well over the postcode median (16 m² across 22 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs). 4 planning records sit against the property, 1 approved, 1 refused.
Know exactly what you're buying at 128 St John Street
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
EPC Rating
Planning history
- Feb 2025AmendmentIn report
Application for a Certificate of Lawfulness (Existing) for the use of the upper floors as three residential self contained flats (Class C3).
Retrospective- Documents
- 5 docs on file
- Reference
- P2025/0612/COL
- Sept 2012Change Of UseFullIn report
Change of use of ground floor from shop (A1) to 24 hour mini cab office (sui generis).
- Documents
- 7 docs on file
- Reference
- P120510
What's in 128 St John Street, Islington, London, EC1V 4JS's planning history?
2 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
128 St John Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£529,000
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 128 St John Street, 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 epc rating, 128 St John Street runs well behind the street norm.
EPC Rating
55 (D)
Street avg 78 (C)
Floor Area
25 m²
Street avg 25 m²
CO₂ Emissions
3.9 t/year
Street avg 1.3 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