1a, Blackwater Drive, West Mersea, Colchester, CO5 8NJ
About 1a
1a is a three-bedroom detached house in West Mersea, Colchester, Colchester (CO5 8NJ). It has a recorded floor area of 100 m² (around 1076 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (January 2022) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in January 2021 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Good to Very Good and main heating went from Average to Good. The recommended improvements would push it to C (score 78).
At 100 m² it sits well below the postcode median (146 m² across 9 EPCs), making it one of the more compact homes locally. Across 1997–2023, sale prices on this property compounded at 7% per year. On a £-per-square-foot basis, the last sale (£492/sq ft) was about 125.3% above the typical sold price in the postcode. Most recent transfer: April 2023 at £530,000.
What this property has
Inside
- Bedrooms3
- Bathrooms2
- Utility roomYes
- EnsuiteYes
Outside
- Private gardenYes
- GarageDetached
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Switched from oil to mains gas, reducing emissions and costs
Hot water efficiency improved
More low energy lighting installed
Get a survey for this property
Level 2 HomeBuyer Report
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Planning history
1a has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
1a has more than quadrupled in price since its earliest registered sale in 1997.
£551,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.0% per year over 26 years.
£530,000
Growth on file: 7.0% per year over 26 years.
Sales timeline
13 April 2023Most recent
£530,000
+46.2%over 1 year13 May 2021
£362,500
+289.8%over 23 years29 May 1997
£93,000
Median price across the last 5 sales in CO5 8NJ: £565,000 (2024–2020).
Nearby sales in CO5 8NJ
7 Blackwater Drive, West Mersea, Colchester, CO5 8NJ
Sold Nov 2024
£550,0003 Blackwater Drive, West Mersea, Colchester, CO5 8NJ
Sold Jul 2021
£710,0005 Blackwater Drive, West Mersea, Colchester, CO5 8NJ
Sold May 2021
£400,0008 Blackwater Drive, West Mersea, Colchester, CO5 8NJ
Sold Oct 2020
£565,0006 Blackwater Drive, West Mersea, Colchester, CO5 8NJ
Sold Jun 2020
£432,000
Versus other Blackwater Drive homes
On floor area, 1a runs well behind the street norm.
Price per m²
£5,300
Street avg £4,621
Floor Area
100 m²
Street avg 155 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
5.2 t/year
Street avg 5.1 t/year
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
1/mo
Steady year-on-year across the wider district.
Nearest stop
0.5 km
High Street — bus stop.
Closest school
1.0 km
Mersea Island School. 1 school 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
44.9dB

Night-time· 23:00 – 07:00
36.5dB







