15a, Flat 1, High Street, Colchester, CO1 1DA
About 15a
15a is a mid-terrace house in Colchester (CO1 1DA). It has a recorded floor area of 60 m² (around 646 sq ft) and construction records dating it to 2007 onwards. At 60 m² this is the smallest unit on EPC record across 15a (60–100 m²). The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (43 versus a best of 73). The latest certificate (June 2024) shows an E (score 43), well below the UK norm with real room to improve. Earlier certificates rated it C (September 2013); the latest reading is 2 bands lower. Between certificates, window efficiency went from Very Poor to Good; while wall efficiency dropped from Very Good to Very Poor and hot-water efficiency dropped from Good to Very Poor. The recommended improvements would push it to D (score 55). Main heating runs on electricity.
At 60 m² it sits well below the postcode median (88 m² across 3 EPCs), making it one of the more compact homes locally.
Everything you need to know about 15a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Changed to a more efficient fuel source
Hot water efficiency decreased
Single glazing replaced with double or better glazing
Hot water system changed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
15a has no planning applications on record.
But the area is active
25 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
15a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£172,000
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 CO1 1DA: £340,000 (2024–2018).
Versus other High Street homes
EPC Rating for 15a lags the street by a wide margin.
EPC Rating
43 (E)
Street avg 55 (D)
Floor Area
60 m²
Street avg 85 m²
CO₂ Emissions
3.8 t/year
Street avg 4.1 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Everything you need to know about 15a
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
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
High Street — bus stop.
Closest school
0.2 km
The Sixth Form College Colchester. 37 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
53.3dB
Night-time· 23:00 – 07:00
43.4dB