30c, Northampton Square, Islington, London, EC1V 0ES
About 30c
30c is a one-bedroom end-of-terrace house in Islington, London, London (EC1V 0ES). It has a recorded floor area of 32 m² (around 344 sq ft), construction records dating it to before 1900 and council tax band C. At 32 m² this is the smallest unit on EPC record across the building (32–168 m²). The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (February 2020) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (September 2009); the latest reading is one band lower. Between certificates, lighting went from Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to C (score 78).
Today's modelled estimate of £363,000 is 17.5% below the 2024 sale of £440,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£1,277/sq ft) was about 30.7% above the typical sold price in the postcode. A recent sale: £440,000 in December 2024. At 32 m² it sits well below the postcode median (72 m² across 14 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 30c
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
What this property has
Inside
- Bedrooms1
- Bathrooms1
Energy performance
30c's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Planning history
30c has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
30c valuation runs notably under the typical sold price in this postcode.
£363,000
Modelled from EPC, postcode comparables.
£440,000
Recorded with HM Land Registry.
Sales timeline
19 December 2024Most recent
£440,000
Median price across the last 5 sales in EC1V 0ES: £850,000 (2024–2017).
Nearby sales in EC1V 0ES
30b, Northampton Square, Islington, London, EC1V 0ES
Sold Apr 2024
£560,00032 Northampton Square, Islington, London, EC1V 0ES
Sold Apr 2023
£2,400,00029b, Northampton Square, London, EC1V 0ES
Sold Jul 2020
£855,00029d, Northampton Square, London, EC1V 0ES
Sold Jun 2019
£425,00031a, Northampton Square, Islington, London, EC1V 0ES
Sold Jan 2017
£850,000
Everything we know about 30c, 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 Northampton Square homes
On years held, 30c runs well behind the street norm.
Price per m²
£13,750
Street avg £13,898
Floor Area
32 m²
Street avg 75 m²
Habitable Rooms
1 rooms
Street avg 4 rooms
CO₂ Emissions
1.5 t/year
Street avg 2.9 t/year
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
10/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Percival Street / Malta Street — bus stop.
Closest school
0.3 km
Hugh Myddelton Primary School. 93 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
60.6dB

Night-time· 23:00 – 07:00
51.7dB