20 Blackwater Avenue, Colchester, CO4 3UY
About 20 Blackwater Avenue
20 Blackwater Avenue is a three-bedroom detached house in Colchester (CO4 3UY). It has a recorded floor area of 96 m² (around 1033 sq ft), construction records dating it to 1967-1975 and council tax band D. The latest certificate (February 2020) shows a D (score 64), on the cusp of jumping into the C band. Earlier certificates rated it C (September 2018); the latest reading is one band lower. Between certificates, wall efficiency dropped from Good to Poor. The recommended improvements would lift it to B (score 82), a 2-band jump.
Held since November 2004 — that's 22 years off the open market, well above the local norm. Across 1997–2004, sale prices on this property compounded at 12.8% per year. Today's modelled estimate of £332,000 sits 89.7% above the 2004 sale of £175,000.
Know exactly what you're buying at 20 Blackwater Avenue
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms2
Outside
- Private gardenYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
20 Blackwater Avenue has no planning applications on record.
Notable planning nearby
8applications of note in the surrounding area
We flagged 1 thing worth checking at 20 Blackwater Avenue
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
30-day money-back guarantee
Sales history & valuation
20 Blackwater Avenue has more than doubled in price since the earliest registered sale in 1997.
£332,000
Modelled from EPC, postcode comparables and a sale-price growth of 12.8% per year over 8 years.
£175,000
Growth on file: 12.8% per year over 8 years.
Sales timeline
19 November 2004Most recent
£175,000
+155.5%over 7 years30 January 1997
£68,500
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
Everything we know about 20 Blackwater Avenue, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area

Versus other Blackwater Avenue homes
Years Held for 20 Blackwater Avenue runs comfortably ahead of the street norm.
Price per m²
£1,823
Street avg £2,574
Floor Area
96 m²
Street avg 103 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
4.3 t/year
Street avg 4.1 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
5/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
The full 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