Energy Performance Certificate
10 Blackwater Close
SG1 4GZ
Stevenage
Current
A
94
Potential
A
94
At a Glance
About This Property
This semi-detached house is located in Stevenage, SG1 4GZ. The property offers 94m² (1012 sq ft) of good-sized living space. With an EPC rating of A (94/100), this property is highly energy efficient, placing it in the top tier of UK homes. The property benefits from a highly efficient gas central heating system, likely a modern condensing boiler achieving 90%+ efficiency. Estimated annual energy costs are £479, comprising £275 for heating, £148 for hot water, and £56 for lighting. The property produces 0.9 tonnes of CO2 per year, which is very low for a UK home. The property last sold in July 2024 for £455,000.
How Does 10 Blackwater Close Compare?
With an energy efficiency score of 94/100, this Stevenage property is outstanding, placing it in the top 3% of UK homes. Annual energy costs of £479 are approximately £1321 below the UK average of £1800, representing significant savings. The 94m² floor area is above the UK average of 87m². CO2 emissions of 0.9 tonnes/year are less than half the UK household average, making this an environmentally friendly choice.
Data source: Comparisons based on UK national statistics from the Department for Energy Security and Net Zero.This property is located in the SG1 postcode district.
How This Property Compares
vs UK Average
vs Stevenage
vs SG1
National Ranking: With an EPC score of 94/100, this property is excellent and performs better than approximately 97% of UK homes for energy efficiency.
Top 3% nationally
Energy Costs: £45/year more than the Stevenage average
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Potential Rating
Based on assessment dated 25 Jun 2024
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Property Information
Full Address
10 Blackwater Close
SG1 4GZ
Stevenage
Property Type
House
Semi-Detached
Construction Age
2022
Floor Area
94.0 m²
NaN total rooms
NaN heated
Tenure
Not defined - use in the case of a new dwelling for which the intended tenure in not known. It is not to be used for an existing dwelling
Efficiency Score
94 / 100
Potential: 94
CO₂ Emissions
0.9 tonnes/year
9 kg/m²
Energy Consumption
48 kWh/m²/year
Last Inspected
25 Jun 2024
new dwelling
About Stevenage
Stevenage is situated in Hertfordshire, East of England. Properties in Stevenage have an average EPC rating of C (score 80/100). This property performs better than most homes in the area. The SG1 postcode district contains over 19700 registered properties.
Location & Nearby Area
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Property Sale History
£455,000
25 July 2024
Type: Semi-Detached
Annual Energy Costs
Heating
Boiler and radiators, mains gas
£275.0/yr
Hot Water
£148.0/yr
Lighting
100.0% low energy
£56.0/yr
Building Elements
Walls
Average thermal transmittance 0.24 W/m-¦K
Roof
Average thermal transmittance 0.09 W/m-¦K
Windows
High performance glazing
Floor
Average thermal transmittance 0.11 W/m-¦K
Heating System
Boiler and radiators, mains gas
Main Fuel
Gas: mains gas
Lighting
Excelent lighting efficiency
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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
The Saint John Henry Newman Catholic School
SecondaryLast inspected: May 2018
Graveley Primary School
PrimaryLast inspected: May 2023
Almond Hill Junior School
PrimaryLast inspected: May 2021
Barclay Academy
SecondaryLast inspected: Apr 2023
The Thomas Alleyne Academy
SecondaryLast inspected: Oct 2019
Letchmore Infants' and Nursery School
PrimaryLast inspected: May 2013
Trotts Hill Primary and Nursery School
PrimaryLast inspected: Nov 2022
The Giles Infant and Nursery School
PrimaryLast inspected: Feb 2023
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: 500 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) has slightly above average crime levels
Most Common Incidents
April 2026violent crime
59 incidents (45%)
Anti-social behaviour
26 incidents (20%)
Public order
13 incidents (10%)
Theft
10 incidents (8%)
Criminal damage
7 incidents (5%)
About this data: Crime statistics show incidents reported during April 2026 within a 1-mile radius. Data from Police.uk, updated monthly.
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All properties in SG1 • 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.