Energy Performance Certificate
48a, Harmer Green Lane
AL6 0AT
WELWYN
Current
C
80
Potential
B
83
At a Glance
About This Property
This detached house is located in WELWYN, AL6 0AT. The property offers 353m² (3800 sq ft) of generously-sized living space with 11 habitable rooms. It is a recently constructed modern home. The property holds an EPC rating of C (80/100), meeting the government's target standard for energy efficiency. With recommended improvements, it could achieve a B rating (83/100). The gas central heating system has good efficiency, indicating a relatively modern, well-maintained boiler. The walls feature cavity wall insulation with good efficiency ratings, providing solid thermal performance. The property has good loft insulation, though topping up to the recommended 270mm depth could provide additional energy savings. Double glazing is installed throughout the property, providing good thermal and acoustic insulation. Estimated annual energy costs are £1450, comprising £1177 for heating, £137 for hot water, and £136 for lighting. The property produces 6.1 tonnes of CO2 per year, which is above average for a UK home. The property last sold in October 2018 for £1,885,000.
How Does 48a, Harmer Green Lane Compare?
With an energy efficiency score of 80/100, this WELWYN property is above average, performing better than 60% of UK properties. At £1450 per year, energy costs are below the national average of £1800. At 353m², this property is significantly larger than the average UK home (87m²).
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 80/100, this property is good and performs better than approximately 60% of UK homes for energy efficiency.
Top 40% nationally
Energy Costs: £434/year more than the WELWYN average
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Potential Rating
With recommended improvements
Based on assessment dated 6 Aug 2018
Advertisement
Planning a Move? Get Expert Removals
We Got The Moves are professional removal specialists helping families and businesses move across the UK. Get a free, no-obligation quote today.
Ad • wegotthemove.co.uk
Property Information
Full Address
48a, Harmer Green Lane
AL6 0AT
WELWYN
Property Type
House
Detached
Construction Age
England and Wales: 2007 onwards
Floor Area
353.0 m²
11.0 total rooms
11.0 heated
Tenure
owner-occupied
Efficiency Score
80 / 100
Potential: 83
CO₂ Emissions
6.1 tonnes/year
17 kg/m²
Energy Consumption
108 kWh/m²/year
Last Inspected
6 Aug 2018
marketed sale
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. The AL6 postcode district contains over 3600 registered properties. As a modern build, this property benefits from contemporary construction standards and improved energy efficiency requirements.
Location & Nearby Area
Scroll to load map
Property Sale History
£1,885,000
5 October 2018
Type: Detached
Annual Energy Costs
Heating
Boiler and radiators, mains gas
£1177.0/yr
Hot Water
£137.0/yr
Lighting
100.0% low energy
£136.0/yr
Building Elements
Walls
Cavity wall, as built, insulated (assumed)
Roof
Pitched, 150 mm loft insulation
Windows
Fully double glazed
Floor
Solid, insulated (assumed)
Heating System
Boiler and radiators, mains gas
Main Fuel
mains gas (not community)
Lighting
Low energy lighting in all fixed outlets
Get FREE Quotes in Welwyn
Compare prices from trusted local tradesmen - no obligation, 100% free
Trusted by thousands of UK homeowners
Advertisement
📊 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
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
Monk's Walk School
SecondaryLast inspected: Sept 2023
The Holy Family Catholic Primary School
PrimaryLast inspected: Jul 2019
Welwyn St Mary's Church of England Voluntary Aided Primary School
PrimaryLast inspected: Sept 2013
Oaklands Primary School
PrimaryLast inspected: Jul 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: 476 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.
Getting Ripped Off by Your Local Tradesman in Welwyn?
Find out with a 100% FREE quote - costs nothing, no obligation
Area Safety
The surrounding area (1-mile radius) has low crime compared to national averages
Most Common Incidents
April 2026violent crime
19 incidents (46%)
Anti-social behaviour
11 incidents (27%)
Vehicle crime
4 incidents (10%)
Public order
3 incidents (7%)
Other crime
2 incidents (5%)
About this data: Crime statistics show incidents reported during April 2026 within a 1-mile radius. Data from Police.uk, updated monthly.
Related Property Guides
Based on this property's characteristics, these guides might help you:
Advertisement
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.