20 Arnstones Close, Colchester, CO4 3AS
About 20 Arnstones Close
20 Arnstones Close is a semi-detached house in Colchester (CO4 3AS). It has a recorded floor area of 121 m² (around 1302 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (September 2013) shows a C (score 75), near the top of the C band. When first surveyed in June 2011 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good, window efficiency went from Average to Good and hot-water efficiency went from Poor to Good. The recommended improvements would push it to B (score 85). The latest certificate is from September 2013, so improvements made since then won't be reflected.
Across 2012–2022, sale prices on this property compounded at 8.1% per year. Today's modelled estimate of £297,000 is 15.1% below the 2022 sale of £350,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£269/sq ft) was about 52.2% above the typical sold price in the postcode. One planning record on file: a garage conversion approved in 2012. Past consents include a garage conversion, meaningful when judging how the property has evolved. At 121 m² it's 21.6% larger than the typical home in the postcode (100 m² median across 6 EPCs). Most recent transfer: January 2022 at £350,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 20 Arnstones Close
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
Energy performance
20 Arnstones Close's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 11 Sept 2023
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
Planning history
- Apr 2012Garage ConversionIn report
Certificate of lawfulness for conversion of double garage to additional living space - bedrooms and study/utility room.
- Documents
- 6 docs on file
- Reference
- 120299
We flagged 1 thing worth checking at 20 Arnstones Close
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
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Sales history & valuation
Latest sale on 20 Arnstones Close was the highest on Land Registry record across the postcode.
£297,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.1% per year over 10 years.
£350,000
Growth on file: 8.1% per year over 10 years.
Sales timeline
14 January 2022Most recent
£350,000
+118.8%over 10 years6 January 2012
£160,000
Median price across the last 5 sales in CO4 3AS: £230,000 (2020–2014).
Nearby sales in CO4 3AS
Everything we know about 20 Arnstones Close, 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 Arnstones Close homes
Years Held for 20 Arnstones Close lags the street by a wide margin.
Price per m²
£2,893
Street avg £2,471
Floor Area
121 m²
Street avg 102 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
3.2 t/year
Street avg 3.8 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Longcroft Road — bus stop.
Closest school
0.6 km
Willow Brook Primary School and Nursery. 28 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
51.4dB

Night-time· 23:00 – 07:00
42.2dB