Apartment 21, 6 Mill Street, Derby, DE1 1DY
About Apartment 21
Apartment 21 is a detached house in Derby (DE1 1DY). It has a recorded floor area of 33 m² (around 355 sq ft) and construction records dating it to 2020. At 33 m² this is the 19th smallest of 23 units on EPC record in the building, where floor areas span 22–49 m². The building's EPC ratings span E to D, with this unit at the bottom. The latest certificate (August 2021) shows an E (score 54), well below the UK norm with real room to improve. Main heating runs on electricity: electricity, unspecified tariff.
At 33 m² it's 22.2% larger than the typical home in the postcode (27 m² median across 25 EPCs).
Everything you need to know about Apartment 21
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
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Planning history
Apartment 21 has no planning applications on record.
But the area is active
76 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Apartment 21 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£136,000
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 5 sales in DE1 1DY: £123,000 (2024–2012).
Versus other Mill Street homes
EPC Rating
54 (E)
Street avg 58 (D)
Floor Area
33 m²
Street avg 35 m²
CO₂ Emissions
2.2 t/year
Street avg 2.1 t/year
Everything you need to know about Apartment 21
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
37/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Mill Street — bus stop.
Closest school
0.5 km
Ashgate Primary School. 35 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
54.5dB

Night-time· 23:00 – 07:00
44.6dB






