Energy Performance Certificate
4, Castle Close
W3 8AD
LONDON
Current
C
78
Potential
C
80
At a Glance
About This Property
This detached flat is located in LONDON, W3 8AD. The property offers 68.19m² (734 sq ft) of modest-sized living space with 2 habitable rooms. It is a 1990s-era home. The property holds an EPC rating of C (78/100), meeting the government's target standard for energy efficiency. The property benefits from a highly efficient gas central heating system, likely a modern condensing boiler achieving 90%+ efficiency. The walls feature cavity wall insulation with good efficiency ratings, providing solid thermal performance. Double glazing is installed, though the efficiency rating suggests older units. Modern low-E double glazing can be up to 40% more efficient than units installed before 2002. Estimated annual energy costs are £457, comprising £305 for heating, £87 for hot water, and £65 for lighting. The property produces 2.0 tonnes of CO2 per year, which is low for a UK home.
How Does 4, Castle Close Compare?
With an energy efficiency score of 78/100, this LONDON property is above average, performing better than 60% of UK properties. Annual energy costs of £457 are approximately £1343 below the UK average of £1800, representing significant savings. CO2 emissions of 2.0 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 W3 postcode district.
How This Property Compares
vs UK Average
vs LONDON
vs W3
National Ranking: With an EPC score of 78/100, this property is good and performs better than approximately 60% of UK homes for energy efficiency.
Top 40% nationally
Energy Costs: £87/year less than the LONDON average
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Potential Rating
Based on assessment dated 28 Jun 2010
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Property Information
Full Address
4, Castle Close
W3 8AD
LONDON
Property Type
Flat
Detached
Construction Age
England and Wales: 1996-2002
Floor Area
68.19 m²
2.0 total rooms
2.0 heated
Tenure
owner-occupied
Efficiency Score
78 / 100
Potential: 80
CO₂ Emissions
2.0 tonnes/year
29 kg/m²
Energy Consumption
175 kWh/m²/year
Last Inspected
28 Jun 2010
marketed sale
About LONDON
LONDON is situated in West London, London. Properties in LONDON have an average EPC rating of D (score 64/100). This property performs better than most homes in the area. Heating costs are £239 below the LONDON average, offering good value. The W3 postcode district contains over 26900 registered properties.
Location & Nearby Area
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Annual Energy Costs
Heating
Boiler and radiators, mains gas
£305/yr
Hot Water
£87/yr
Lighting
33.0% low energy
£65/yr
Save £26/yr
Building Elements
Walls
Cavity wall, as built, insulated (assumed)
Roof
Flat, insulated (assumed)
Windows
Fully double glazed
Floor
(other premises below)
Heating System
Boiler and radiators, mains gas
Main Fuel
mains gas - this is for backwards compatibility only and should not be used
Lighting
Low energy lighting in 33% 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
Acton Gardens Primary School
PrimaryLast inspected: Sept 2021
Ark Priory Primary Academy
PrimaryLast inspected: Jun 2015
Ark Soane Academy
SecondaryArk Acton Academy
SecondaryLast inspected: Feb 2023
Twyford Church of England High School
SecondaryLast inspected: May 2012
Derwentwater Primary School
PrimaryLast inspected: Jun 2019
Ark Byron Primary Academy
PrimaryLast inspected: Nov 2018
St Vincent's Catholic Primary School
PrimaryLast inspected: Jun 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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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.