Energy Performance Certificate
51a Harmer Green Lane
AL6 0AP
WELWYN
Current
A
92
Potential
A
96
At a Glance
About This Property
This detached house is located in WELWYN, AL6 0AP. The property offers 672m² (7233 sq ft) of generously-sized living space. With an EPC rating of A (92/100), this property is highly energy efficient, placing it in the top tier of UK homes. This property benefits from a ground source heat pump system, which can deliver 3-4 units of heat for every unit of electricity used. Heat pumps are eligible for the £7,500 Boiler Upgrade Scheme grant, making them increasingly popular for UK homes seeking to reduce carbon emissions. Estimated annual energy costs are £2708, comprising £1571 for heating, £941 for hot water, and £196 for lighting. The property produces 0.9 tonnes of CO2 per year, which is very low for a UK home.
How Does 51a Harmer Green Lane Compare?
With an energy efficiency score of 92/100, this WELWYN property is outstanding, placing it in the top 3% of UK homes. Energy costs of £2708 annually are £908 above the UK average. Improvements could reduce bills significantly. At 672m², this property is significantly larger than the average UK home (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 AL6 postcode district.
How This Property Compares
vs UK Average
vs WELWYN
vs AL6
National Ranking: With an EPC score of 92/100, this property is excellent and performs better than approximately 97% of UK homes for energy efficiency.
Top 3% nationally
Energy Costs: £1692/year more than the WELWYN average
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Potential Rating
Based on assessment dated 7 Mar 2025
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Property Information
Full Address
51a Harmer Green Lane
AL6 0AP
WELWYN
Property Type
House
Detached
Construction Age
2024
Floor Area
672.0 m²
NaN total rooms
NaN heated
Tenure
Owner-occupied
Efficiency Score
92 / 100
Potential: 96
CO₂ Emissions
0.9 tonnes/year
1 kg/m²
Energy Consumption
13 kWh/m²/year
Last Inspected
7 Mar 2025
new dwelling
About WELWYN
WELWYN is situated in Hertfordshire, East of England. Properties in WELWYN have an average EPC rating of D (score 62/100). This property performs better than most homes in the area. Heating costs are £555 above the local average, suggesting room for improvement. The AL6 postcode district contains over 3600 registered properties.
Location & Nearby Area
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Annual Energy Costs
Heating
Ground source heat pump, radiators and underfloor, electric
£1571.0/yr
Hot Water
£941.0/yr
Lighting
100.0% low energy
£196.0/yr
Building Elements
Walls
Average thermal transmittance 0.14 W/m-¦K
Roof
Average thermal transmittance 0.12 W/m-¦K
Windows
High performance glazing
Floor
Average thermal transmittance 0.1 W/m-¦K
Heating System
Ground source heat pump, radiators and underfloor, electric
Main Fuel
Electricity: electricity, unspecified tariff
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
St John's CofE Primary School
PrimaryLast inspected: Apr 2023
Oaklands Primary School
PrimaryLast inspected: Jul 2023
Harwood Hill Junior Mixed Infant and Nursery School
PrimaryLast inspected: Mar 2023
Homerswood Primary and Nursery School
PrimaryLast inspected: Jan 2019
Waterside Academy
PrimaryLast inspected: Jun 2022
The Holy Family Catholic Primary School
PrimaryLast inspected: Jul 2019
Monk's Walk School
SecondaryLast inspected: Sept 2023
Welwyn St Mary's Church of England Voluntary Aided Primary School
PrimaryLast inspected: Sept 2013
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: 227 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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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.