17 Blackwater Avenue, Colchester, CO4 3UY
About 17 Blackwater Avenue
17 Blackwater Avenue is a detached house in Colchester (CO4 3UY). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (September 2022) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2012. Between certificates, lighting went from Good to Very Good. The recommended improvements would lift it to B (score 87), a 2-band jump.
A recent sale: £360,000 in January 2026. On a £-per-square-foot basis, the last sale (£408/sq ft) was about 143.1% above the typical sold price in the postcode. At 82 m² it's 15.5% smaller than the typical home in the postcode (97 m² median across 14 EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 29 September 2032
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Level 2 HomeBuyer Report
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Planning history
17 Blackwater Avenue has no planning applications on record.
But the area is active
8 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
17 Blackwater Avenue valuation sits well clear of the typical sold price in this postcode.
£365,000
Modelled from EPC, postcode comparables.
£360,000
Recorded with HM Land Registry.
Sales timeline
30 January 2026Most recent
£360,000
Median price across the last 5 sales in CO4 3UY: £297,000 (2025–2018).
Nearby sales in CO4 3UY
8 Blackwater Avenue, Colchester, CO4 3UY
Sold Jan 2025
£375,00018 Blackwater Avenue, Colchester, CO4 3UY
Sold Jul 2024
£388,00016 Blackwater Avenue, Colchester, CO4 3UY
Sold Mar 2021
£297,00029 Blackwater Avenue, Colchester, CO4 3UY
Sold Mar 2021
£295,00023 Blackwater Avenue, Colchester, CO4 3UY
Sold Jul 2018
£270,000
Versus other Blackwater Avenue homes
Price per m² for 17 Blackwater Avenue runs comfortably ahead of the street norm.
Price per m²
£4,390
Street avg £2,516
Floor Area
82 m²
Street avg 104 m²
Habitable Rooms
4 rooms
Street avg 6 rooms
CO₂ Emissions
3.7 t/year
Street avg 4.1 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
430/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Welshwood Park — bus stop.
Closest school
0.3 km
Roach Vale Primary School. 17 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
50.5dB

Night-time· 23:00 – 07:00
41.0dB







