Energy Performance Certificate
Flat 3, 10 Denzil Avenue
SO14 0LJ
SOUTHAMPTON
Current
C
74
Potential
C
75
At a Glance
About This Property
This terraced flat is located in SOUTHAMPTON, SO14 0LJ. The property offers 32mยฒ (344 sq ft) of compact living space with 1 habitable room. It is a characterful interwar or early 20th century home. The property holds an EPC rating of C (74/100), meeting the government's target standard for energy efficiency. The gas central heating system has good efficiency, indicating a relatively modern, well-maintained boiler. The solid walls lack insulation. Solid wall insulation (external or internal) typically costs ยฃ8,000-ยฃ14,000 but can reduce heat loss by up to 35% and improve your EPC rating by 1-2 bands. 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 ยฃ320, comprising ยฃ198 for heating, ยฃ81 for hot water, and ยฃ41 for lighting. The property produces 1.1 tonnes of CO2 per year, which is very low for a UK home.
How Does Flat 3 Compare?
With an energy efficiency score of 74/100, this SOUTHAMPTON property is above average, performing better than 60% of UK properties. Annual energy costs of ยฃ320 are approximately ยฃ1480 below the UK average of ยฃ1800, representing significant savings. With 32mยฒ of space, this is a more compact property compared to the UK average of 87mยฒ. CO2 emissions of 1.1 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 SO14 postcode district.
How This Property Compares
vs UK Average
vs SOUTHAMPTON
vs SO14
National Ranking: With an EPC score of 74/100, this property is good and performs better than approximately 60% of UK homes for energy efficiency.
Top 40% nationally
Energy Costs: ยฃ261/year less than the SOUTHAMPTON average
Energy Efficiency Rating
๐ Official EPC Register DataCurrent Rating
Potential Rating
Based on assessment dated 20 Jun 2018
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Property Information
Full Address
Flat 3
10 Denzil Avenue
SO14 0LJ
SOUTHAMPTON
Property Type
Flat
Enclosed Mid-Terrace
Construction Age
England and Wales: 1900-1929
Floor Area
32.0 mยฒ
1.0 total rooms
1.0 heated
Tenure
rental (private)
Efficiency Score
74 / 100
Potential: 75
COโ Emissions
1.1 tonnes/year
34 kg/mยฒ
Energy Consumption
196 kWh/mยฒ/year
Last Inspected
20 Jun 2018
rental (private)
About SOUTHAMPTON
SOUTHAMPTON is situated in Hampshire, South East. Properties in SOUTHAMPTON have an average EPC rating of D (score 63/100). This property performs better than most homes in the area. Heating costs are ยฃ383 below the SOUTHAMPTON average, offering good value. The SO14 postcode district contains over 14700 registered properties.
Location & Nearby Area
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Annual Energy Costs
Heating
Boiler and radiators, mains gas
ยฃ198.0/yr
Hot Water
ยฃ81.0/yr
Lighting
50.0% low energy
ยฃ41.0/yr
Save ยฃ14/yr
Building Elements
Walls
Solid brick, as built, no insulation (assumed)
Roof
(another dwelling above)
Windows
Fully double glazed
Floor
Suspended, no insulation (assumed)
Heating System
Boiler and radiators, mains gas
Main Fuel
mains gas (not community)
Lighting
Low energy lighting in 50% of fixed outlets
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๐ฐ Save ยฃ400/year
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Your Savings Today
ยฃ400/yr
ยฃ4,000 over 10 years
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ยฃ400/yr
ยฃ4,000 over 10 years
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External Wall Insulation
Your walls are rated Very Poor. External insulation can dramatically reduce heat loss.
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๐ 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 โNearby Schools
Within 3 miles of this property
Mount Pleasant Junior School
PrimaryLast inspected: Jun 2023
Maytree Nursery and Infants' School
PrimaryLast inspected: Dec 2022
Bevois Town Primary School
PrimaryLast inspected: Oct 2018
St Anne's Catholic School
SecondaryLast inspected: Sept 2022
Banister Primary School
PrimaryLast inspected: Nov 2018
St Mary's Church of England Voluntary Controlled Primary School
PrimaryLast inspected: Oct 2023
Springhill Catholic Primary School
PrimaryLast inspected: Mar 2022
Bitterne Manor Primary School
PrimaryLast inspected: Nov 2022
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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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.