Energy Performance Certificate
27 Warren Close, London
SE21 8NB
Current
D
65
Potential
B
83
At a Glance
About This Property
This terraced house is located in the SE21 8NB postcode area. The property offers 99m² (1066 sq ft) of good-sized living space with 5 habitable rooms. It is a post-war property from the mid-20th century. With an EPC rating of D (65/100), this property is around the UK average 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 for improved thermal efficiency. The pitched roof lacks adequate insulation. Topping up loft insulation to 270mm (the recommended depth) typically costs £300-£500 and could save £150-£250 annually, with the investment often paying for itself within 2-3 years. Double glazing is installed throughout the property, providing good thermal and acoustic insulation. Estimated annual energy costs are £1909, comprising £1468 for heating, £271 for hot water, and £170 for lighting. The property produces 3.8 tonnes of CO2 per year, which is low for a UK home. 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 27 Warren Close Compare?
With an energy efficiency score of 65/100, this SE21 property is around the national average for UK homes. Annual energy costs of £1909 are close to the UK average. The 99m² floor area is above the UK average of 87m². At 3.8 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 SE21 postcode district.
How This Property Compares
vs UK Average
vs SE21
vs SE21
National Ranking: With an EPC score of 65/100, this property is average and performs better than approximately 45% of UK homes for energy efficiency.
Top 55% nationally
Energy Costs: £1059/year more than the SE21 average
Energy Efficiency Rating
📊 Official EPC Register DataCurrent Rating
Potential Rating
With recommended improvements
Based on assessment dated 24 Sept 2022
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Property Information
Full Address
27 Warren Close
London
SE21 8NB
Property Type
House
Enclosed End-Terrace
Construction Age
England and Wales: 1967-1975
Floor Area
99.0 m²
5.0 total rooms
5.0 heated
Tenure
Rented (social)
Efficiency Score
65 / 100
Potential: 83
CO₂ Emissions
3.8 tonnes/year
39 kg/m²
Energy Consumption
219 kWh/m²/year
Last Inspected
24 Sept 2022
rental
About This Area
Heating costs are £618 above the local average, suggesting room for improvement. The SE21 postcode district contains over 5300 registered properties.
Location & Nearby Area
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Annual Energy Costs
Heating
Boiler and radiators, mains gas
£1468.0/yr
Save £468/yr
Hot Water
£271.0/yr
Save £88/yr
Lighting
86.0% low energy
£170.0/yr
Building Elements
Walls
Cavity wall, as built, no insulation (assumed)
Roof
Pitched, limited insulation (assumed)
Windows
Fully double glazed
Floor
Solid, no insulation (assumed)
Heating System
Boiler and radiators, mains gas
Main Fuel
mains gas (not community)
Lighting
Low energy lighting in 86% of fixed outlets
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Your Savings Today
£2,006/yr
£20,060 over 10 years
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£2,006/yr
£20,060 over 10 years
Build Your Upgrade Plan
Sorted by best return on investment (quick wins first)
Loft Insulation
Your roof is rated Very Poor. Top up to 270mm for best results.
Cavity Wall Insulation
Your walls are rated Poor. Cavity fill is quick and cost-effective.
Solar Panels + Battery
Your house is ideal for solar. OVO: UK's #1 green energy supplier.
Air Source Heat Pump
Ultra-efficient heating with £7,500 government grant. OVO: MCS certified installation.
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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
Rosendale Primary School
PrimarySt Martin in the Fields High School for Girls
SecondaryLast inspected: May 2018
The Elmgreen School
SecondaryLast inspected: Jun 2022
Judith Kerr Primary School
PrimaryLast inspected: May 2022
Dulwich Hamlet Junior School
PrimaryLast inspected: Mar 2023
Fenstanton Primary School
PrimaryLast inspected: Jun 2023
City Heights E-ACT Academy
SecondaryLast inspected: Sept 2021
St Jude's Church of England 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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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.