Home Checkup

Energy Performance Certificate

21C STRATHEDEN ROAD

SE3 7TH

LONDON

Current

D

66

Potential

C

79

At a Glance

About This Property

This detached flat is located in LONDON, SE3 7TH. The property offers 98m² (1055 sq ft) of good-sized living space with 3 habitable rooms. It is a period property with Victorian or earlier origins. With an EPC rating of D (66/100), this property is around the UK average for energy efficiency. With recommended improvements, it could achieve a C rating (79/100). 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 £8,000-£14,000 but can reduce heat loss by up to 35% and improve your EPC rating by 1-2 bands. Single glazing is a significant source of heat loss, accounting for up to 25% of a home's heat escaping through windows. Upgrading to double glazing typically costs £400-£600 per window but improves thermal comfort and can reduce noise by up to 30dB. Estimated annual energy costs are £805, comprising £625 for heating, £101 for hot water, and £79 for lighting. The property produces 3.7 tonnes of CO2 per year, which is low for a UK home. The property last sold in June 2022 for £570,000. For landlords: This rental property with a D rating is positioned above the current minimum standard. With proposed changes to require a C rating by 2028, modest improvements now could future-proof your compliance.

How Does 21C STRATHEDEN ROAD Compare?

With an energy efficiency score of 66/100, this LONDON property is around the national average for UK homes. Annual energy costs of £805 are approximately £995 below the UK average of £1800, representing significant savings. The 98m² floor area is above the UK average of 87m². At 3.7 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 SE3 postcode district.

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How This Property Compares

🇬🇧

vs UK Average

This property66
Average60
+10% better
🏘️

vs LONDON

This property66
Average64
+3% better
📮

vs SE3

This property66
Average63
+5% better

National Ranking: With an EPC score of 66/100, this property is average and performs better than approximately 45% of UK homes for energy efficiency.

Top 55% nationally

Energy Costs: £261/year more than the LONDON average

Energy Efficiency Rating

📊 Official EPC Register Data
A92-100
B81-91
C69-80
Potential
D55-68
Current
E39-54
F21-38
G1-20

Current Rating

D(66 points)

Potential Rating

C(79 points)

With recommended improvements

Based on assessment dated 19 May 2021

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Property Information

📍

Full Address

21C STRATHEDEN ROAD

SE3 7TH

LONDON

🏠

Property Type

Flat

Detached

📅

Construction Age

England and Wales: before 1900

📐

Floor Area

98.0

3.0 total rooms

3.0 heated

🔑

Tenure

Rented (private)

Efficiency Score

66 / 100

Potential: 79

🌍

CO₂ Emissions

3.7 tonnes/year

37 kg/m²

📊

Energy Consumption

212 kWh/m²/year

🔍

Last Inspected

19 May 2021

rental

📍

About LONDON

LONDON is situated in South East London, London. Properties in LONDON have an average EPC rating of D (score 64/100). The SE3 postcode district contains over 14900 registered properties. Like many LONDON properties, this home features period architecture with character typical of Victorian-era construction.

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Location & Nearby Area

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💷

Property Sale History

£570,000

24 June 2022

Type: Flat

Annual Energy Costs

🔥

Heating

Boiler and radiators, mains gas

£625.0/yr

Save £296/yr

🚿

Hot Water

£101.0/yr

💡

Lighting

100.0% low energy

£79.0/yr

Building Elements

🧱

Walls

Solid brick, as built, no insulation (assumed)

Poor
🏗️

Roof

Pitched, 100 mm loft insulation

Average
🪟

Windows

Single glazed

Very Poor
📦

Floor

(another dwelling below)

🔥

Heating System

Boiler and radiators, mains gas

Good

Main Fuel

mains gas (not community)

💡

Lighting

Low energy lighting in all fixed outlets

Very Good
My Priority Is...

Showing quick wins with fastest payback first

💰 Save £843/year

With 3 selected upgrades

⚡ Bill-Free Living(inc. solar export income)
Journey to A
DA
19,500
Property Value Boost
Investment
£22,500
Payback
~27 yrs
Current Costs
£805/yr
🔮

Future Energy Price Simulator

Drag to see how rising prices affect your savings

0%
Today's Prices
Today+10%+20%+30%+40%+50%

Your Savings Today

£843/yr

£8,430 over 10 years

Move slider to see

£843/yr

£8,430 over 10 years

Build Your Upgrade Plan

Sorted by best return on investment (quick wins first)

1
🧱

External Wall Insulation

Your walls are rated Poor. External insulation can dramatically reduce heat loss.

Save £400/yrPayback: ~30 years+8 EPC points
£12,000
Cost
2
🌱

Air Source Heat Pump

Ultra-efficient heating with £7,500 government grant. OVO: MCS certified installation.

Save £293/yrPayback: ~12 years+10 EPC points
🏛️ £7,500 BUS Grant Available
£3,500
£11,000
Cost
3
🪟

Double Glazing

Your windows are rated Very Poor. Modern A-rated double glazing reduces drafts and heat loss.

Save £150/yrPayback: ~47 years+2 EPC points
£7,000
Cost

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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

Invicta Primary School

Primary
📍0.3 miles awaySE3 7HE

Last inspected: Jan 2019

Good

The John Roan School

Secondary
📍0.4 miles awaySE3 7QR

Last inspected: Oct 2023

Good

Leigh Academy Blackheath

Secondary
📍0.5 miles awaySE3 8SY

Last inspected: Dec 2022

Outstanding

Sherington Primary School

Primary
📍0.5 miles awaySE7 7JP

Last inspected: Oct 2023

Good

Our Lady of Grace Catholic Primary School

Primary
📍0.6 miles awaySE7 7HR

Last inspected: Mar 2023

Outstanding

Cherry Orchard Primary School

Primary
📍0.6 miles awaySE7 7DG

Last inspected: Mar 2019

Good

All Saints' Church of England Primary School Blackheath

Primary
📍0.7 miles awaySE3 0TX

Last inspected: Sept 2019

Good

Kidbrooke Park Primary School

Primary
📍0.7 miles awaySE3 8JG
?Not yet rated

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.

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Broadband & Connectivity

🚀Ultrafast Broadband

Average download speed: 500 Mbps

⚡ Gigabit Available
⬇️

Download Speed

Minimum:30 Mbps
Average:500 Mbps
Maximum:1000 Mbps
⬆️

Upload Speed

Minimum:50 Mbps
Average:200 Mbps
Maximum:200 Mbps

Available Providers

Virgin MediaHyperopticBTSkyTalkTalk

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.

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