Flat 1, 334 Old Street, Hackney, London, EC1V 9DR
About Flat 1
Flat 1 is a mid-terrace house in Hackney, London, London (EC1V 9DR). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1900-1929 and council tax band D. At 76 m² this is the smallest unit on EPC record across the building (76–97 m²). The building's EPC ratings span C to B, with this unit at the bottom. On EPC score it ranks last in the building (74 versus a best of 84). The latest certificate (October 2025) shows a C (score 74). The rating has held steady at C across 3 certificates since December 2008. Between certificates, wall efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. Main heating runs on electricity.
One historical planning record sits against the property in 2009.
Know exactly what you're buying at Flat 1
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 1's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
More low energy lighting installed
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Wall insulation improved
Floor insulation added or improved
Planning history
- Jul 2009Change Of UseFullIn report
Change of use of ground floor and basement from B1 offices to A1 (retail), restoration of shopfront. Hours of use: from 8:00am to 8:00pm Mondays to Saturdays and not at all on Sundays and Bank Holidays.
- Documents
- 4 docs on file
- Reference
- 2009/1077
What's in Flat 1, 334 Old Street, Hackney, London, EC1V 9DR's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
Flat 1 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£651,000
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.
Everything we know about Flat 1, 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 Old Street homes
Flat 1 is notably below the street on epc rating.
EPC Rating
74 (C)
Street avg 77 (C)
Floor Area
76 m²
Street avg 73 m²
CO₂ Emissions
0.5 t/year
Street avg 1.3 t/year
Habitable Rooms
3 rooms
Street avg 3 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
0.1 km
Great Eastern Street — bus stop.
Closest school
0.2 km
St Monica's Catholic Primary School. 106 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
60.8dB

Night-time· 23:00 – 07:00
51.8dB