1 Marconi House, Avon Way, Colchester, CO4 3TZ
About 1 Marconi House
1 Marconi House is a four-bedroom mid-terrace house in Colchester (CO4 3TZ). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to 1983-1990 and council tax band A. The latest certificate (June 2021) shows a C (score 78), near the top of the C band. Other recorded features include outbuildings.
Across 2007–2025, sale prices on this property compounded at -3.1% per year. Today's modelled estimate of £239,000 sits 83.8% above the 2025 sale of £130,000. Most recent transfer was July 2025 at £130,000 — fresh data. At 73 m² it's 17.7% larger than the typical home in the postcode (62 m² median across 12 EPCs).
Know exactly what you're buying at 1 Marconi House
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
- Bedrooms4
- Bathrooms1
- StudyYes
- FireplaceYes
Outside
- ParkingOff street
- OutbuildingsYes
Building
- ConciergeYes
Energy performance
EPC Rating
Planning history
1 Marconi House has no planning applications on record.
Notable planning nearby
8applications of note in the surrounding area
We flagged 1 thing worth checking at 1 Marconi House
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
1 Marconi House's sale-price growth has lagged the wider UK trajectory across its history on file.
£239,000
Modelled from EPC, postcode comparables and a sale-price growth of -3.1% per year over 18 years.
£130,000
Growth on file: -3.1% per year over 18 years.
Sales timeline
17 July 2025Most recent
£130,000
-42.2%over 17 years12 December 2007
£225,000
Median price across the last 5 sales in CO4 3TZ: £112,000 (2023–2016).
Nearby sales in CO4 3TZ
9 Wright House, Avon Way, Colchester, CO4 3TZ
Sold Feb 2023
£185,2501 Baird House, Avon Way, Colchester, CO4 3TZ
Sold Sept 2019
£110,0009 Einstein House, Avon Way, Colchester, CO4 3TZ
Sold Aug 2017
£118,0004 Einstein House, Avon Way, Colchester, CO4 3TZ
Sold Mar 2017
£112,0007 Einstein House, Avon Way, Colchester, CO4 3TZ
Sold Aug 2016
£110,000
Everything we know about 1 Marconi House, 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 Avon Way homes
On years held, 1 Marconi House runs well behind the street norm.
Price per m²
£1,781
Street avg £2,299
Floor Area
73 m²
Street avg 70 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
1.9 t/year
Street avg 2.7 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
University Residences — bus stop.
Closest school
0.6 km
Unity Primary Academy. 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
50.7dB

Night-time· 23:00 – 07:00
42.0dB