Energy Performance Certificate
9 Sonters Down, Rettendon Common
CM3 8EU
CHELMSFORD
Current
C
71
Potential
C
77
At a Glance
About This Property
This terraced flat is located in CHELMSFORD, CM3 8EU. The property offers 60m² (646 sq ft) of modest-sized living space with 3 habitable rooms. It is a post-war property from the mid-20th century. The property holds an EPC rating of C (71/100), meeting the government's target standard for energy efficiency. Heating is provided by oil-fired central heating. While effective, oil prices can be volatile and the system produces higher carbon emissions than gas or heat pumps. Double glazing is installed throughout the property, providing good thermal and acoustic insulation. Estimated annual energy costs are £434, comprising £221 for heating, £136 for hot water, and £77 for lighting. The property produces 2.6 tonnes of CO2 per year, which is low for a UK home. The property last sold in February 2019 for £205,000, with 2 recorded sales in our database.
How Does 9 Sonters Down Compare?
With an energy efficiency score of 71/100, this CHELMSFORD property is above average, performing better than 60% of UK properties. Annual energy costs of £434 are approximately £1366 below the UK average of £1800, representing significant savings. With 60m² of space, this is a more compact property compared to the UK average of 87m². At 2.6 tonnes of CO2 per year, emissions are below the UK average of 4.5 tonnes.
Data source: Comparisons based on UK national statistics from the Department for Energy Security and Net Zero.This property is located in the CM3 postcode district.
How This Property Compares
vs UK Average
vs CHELMSFORD
vs CM3
National Ranking: With an EPC score of 71/100, this property is good and performs better than approximately 60% of UK homes for energy efficiency.
Top 40% nationally
Energy Costs: £258/year less than the CHELMSFORD average
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Potential Rating
Based on assessment dated 24 Aug 2022
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Property Information
Full Address
9 Sonters Down
Rettendon Common
CM3 8EU
CHELMSFORD
Property Type
Flat
End-Terrace
Construction Age
England and Wales: 1967-1975
Floor Area
60.0 m²
3.0 total rooms
3.0 heated
Tenure
Owner-occupied
Efficiency Score
71 / 100
Potential: 77
CO₂ Emissions
2.6 tonnes/year
43 kg/m²
Energy Consumption
169 kWh/m²/year
Last Inspected
24 Aug 2022
marketed sale
About CHELMSFORD
CHELMSFORD is situated in Essex, East of England. Properties in CHELMSFORD have an average EPC rating of D (score 63/100). Heating costs are £471 below the CHELMSFORD average, offering good value. The CM3 postcode district contains over 16500 registered properties.
Location & Nearby Area
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Property Sale History
£205,000
8 February 2019
Type: Flat
vs previous sale
£180,000
4 November 2016
Type: Flat
Market Insights: This property has sold 2 times since 2015. Value has increased by 13.9% over this period.
Annual Energy Costs
Heating
Boiler and radiators, oil
£221.0/yr
Save £34/yr
Hot Water
£136.0/yr
Save £31/yr
Lighting
71.0% low energy
£77.0/yr
Save £18/yr
Building Elements
Walls
Cavity wall, filled cavity
Roof
(another dwelling above)
Windows
Fully double glazed
Floor
Solid, no insulation (assumed)
Heating System
Boiler and radiators, oil
Main Fuel
oil (not community)
Lighting
Low energy lighting in 71% of fixed outlets
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📊 Compare with UK-Wide Property Data
See how this property compares to national averages. Explore energy efficiency trends, top-rated areas, and comprehensive UK property statistics.
View UK Property Insights →Nearby Schools
Within 3 miles of this property
Rettendon Primary School
PrimaryLast inspected: Apr 2023
St Luke's Park Primary School
PrimaryHilltop Junior School
PrimaryLast inspected: Jan 2022
Hilltop Infant School
PrimaryBeauchamps High School
SecondaryLast inspected: Oct 2014
Runwell Community Primary School
PrimaryLast inspected: Jul 2023
The Wickford Church of England School
PrimaryLast inspected: Sept 2023
Elmwood Primary School
PrimaryLast inspected: Mar 2018
About school ratings: Ofsted ratings range from Outstanding to Inadequate. These ratings are based on inspections of teaching quality, leadership, pupil behavior, and safety. Note that school catchment areas vary - check with the school or local council for admission details.
Data source: School information from Get Information About Schools (GIAS). Distances are approximate. Always verify school catchment areas directly with the school or local education authority.
Broadband & Connectivity
Average download speed: 165 Mbps
Download Speed
Upload Speed
Available Providers
What do these speeds mean? 10-30 Mbps: Good for browsing and streaming. 30-100 Mbps: Great for multiple users and HD streaming. 100-300 Mbps: Excellent for 4K streaming and gaming. 300+ Mbps: Perfect for large households and heavy internet use.
Data source: Broadband speeds are from Ofcom Connected Nations 2025 report (July 2025 release). Data shows typical speeds available in this postcode area. Actual speeds at this specific property may vary depending on line quality, distance from exchange, and chosen provider. Always verify availability with providers before committing.
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Area Safety
The surrounding area (1-mile radius) experiences very low crime levels
Most Common Incidents
April 2026violent crime
14 incidents (50%)
Burglary
4 incidents (14%)
Criminal damage
3 incidents (11%)
Anti-social behaviour
2 incidents (7%)
Public order
2 incidents (7%)
About this data: Crime statistics show incidents reported during April 2026 within a 1-mile radius. Data from Police.uk, updated monthly.
More Properties in CM3 8EU
Showing properties in the same postcode. Click to view detailed EPC data for each property.
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All properties in CM3 • Click to view detailed energy performance data
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About this EPC: Energy Performance Certificates are valid for 10 years and are required when a property is built, sold, or rented. Learn more about EPCs or book an EPC assessment.
Cost estimates are approximate and actual savings may vary. Find local tradesmen to get accurate quotes for improvements.
Data Sources: This report contains public sector information licensed under the Open Government Licence v3.0.
Data from: UK Energy Performance Certificate Register, HM Land Registry Price Paid Data, and Police.uk crime statistics.