Energy Performance Certificate
Flat 1, 143, High Street
SN8 1HN
MARLBOROUGH
Current
D
67
Potential
C
71
At a Glance
About This Property
This detached flat is located in MARLBOROUGH, SN8 1HN. The property offers 108.11m² (1164 sq ft) of good-sized living space with 4 habitable rooms. It is a period property with Victorian or earlier origins. With an EPC rating of D (67/100), this property is around the UK average for energy efficiency. With recommended improvements, it could achieve a C rating (71/100). The property benefits from a highly efficient gas central heating system, likely a modern condensing boiler achieving 90%+ efficiency. The property has modern timber frame or system-built walls, which typically offer good insulation properties when properly maintained. Estimated annual energy costs are £828, comprising £600 for heating, £115 for hot water, and £113 for lighting. The property produces 4.2 tonnes of CO2 per year, which is moderate for a UK home.
How Does Flat 1 Compare?
With an energy efficiency score of 67/100, this MARLBOROUGH property is around the national average for UK homes. Annual energy costs of £828 are approximately £972 below the UK average of £1800, representing significant savings. The 108.11m² floor area is above the UK average of 87m². At 4.2 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 SN8 postcode district.
How This Property Compares
vs UK Average
vs MARLBOROUGH
vs SN8
National Ranking: With an EPC score of 67/100, this property is average and performs better than approximately 45% of UK homes for energy efficiency.
Top 55% nationally
Energy Costs: £259/year less than the MARLBOROUGH average
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Potential Rating
With recommended improvements
Based on assessment dated 30 Apr 2010
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Property Information
Full Address
Flat 1
143, High Street
SN8 1HN
MARLBOROUGH
Property Type
Flat
Detached
Construction Age
England and Wales: before 1900
Floor Area
108.11 m²
4.0 total rooms
4.0 heated
Tenure
owner-occupied
Efficiency Score
67 / 100
Potential: 71
CO₂ Emissions
4.2 tonnes/year
38 kg/m²
Energy Consumption
232 kWh/m²/year
Last Inspected
30 Apr 2010
marketed sale
About MARLBOROUGH
MARLBOROUGH is situated in Wiltshire, South West. Properties in MARLBOROUGH have an average EPC rating of D (score 56/100). This property performs better than most homes in the area. Heating costs are £487 below the MARLBOROUGH average, offering good value. The SN8 postcode district contains over 7800 registered properties. Like many MARLBOROUGH properties, this home features period architecture with character typical of Victorian-era construction.
Location & Nearby Area
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Annual Energy Costs
Heating
Boiler and radiators, mains gas
£600.0/yr
Save £9/yr
Hot Water
£115.0/yr
Save £6/yr
Lighting
10.0% low energy
£113.0/yr
Save £54/yr
Building Elements
Walls
Timber frame, as built, no insulation (assumed)
Roof
(another dwelling above)
Windows
Partial secondary glazing
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 10% of fixed outlets
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Your Savings Today
£400/yr
£4,000 over 10 years
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£400/yr
£4,000 over 10 years
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Cavity Wall Insulation
Your walls are rated Very Poor. Cavity fill is quick and cost-effective.
Double Glazing
Your windows are rated Poor. Modern A-rated double glazing reduces drafts and heat loss.
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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
Marlborough St Mary's CE Primary School
PrimaryLast inspected: Jun 2019
St John's Marlborough
SecondaryLast inspected: May 2014
Preshute Church of England Primary School
PrimaryLast inspected: Mar 2023
Kennet Valley Church of England Aided Primary School
PrimaryLast inspected: Mar 2020
Ogbourne CofE Primary School
PrimaryLast inspected: Feb 2018
Oare Church of England Primary School
PrimaryLast inspected: Sept 2019
St Katharine's CofE Primary School
PrimaryLast inspected: Dec 2021
Easton Royal Academy
PrimaryLast inspected: Mar 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: 213 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 low crime compared to national averages
Most Common Incidents
April 2026violent crime
10 incidents (27%)
Anti-social behaviour
9 incidents (24%)
Shoplifting
6 incidents (16%)
Theft
4 incidents (11%)
Drugs
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.
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Related Property Guides
Based on this property's characteristics, these guides might help you:
How to Improve Your EPC Rating →
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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.