HSR Case Studies



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Energy Performance Certificates (EPCs)
( 251.57KB )

Since 1 October 2008, all commercial buildings being sold or let must be covered by an Energy Performance Certificate. An EPC measures the energy performance of a property based on the building fabric and the way it is illuminated, heated and ventilated (including air‐conditioning).


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Code for Sustainable Homes (CSH)
( 238.81KB )

In April 2007 the Code for Sustainable Homes effectively replaced Ecohomes for the environmental assessment of newly constructed domestic dwellings in England.


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Display Energy Certificates (DECs)
( 263.74KB )

A Display Energy Certificate (DEC) is currently required annually for all public buildings over 1000m2. The Government is currently proposing to reduce the size threshold to 250m2.


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Standard Assessment Procedure (SAP)
( 183.48KB )

The Standard Assessment Procedure (SAP) is the Government?s recommended system for energy rating of all new dwellings of any size.


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Simplified Building Energy Model (SBEM)
( 111.41KB )

The Simplified Building Energy Model (SBEM) is the default method for assessing both target and proposed levels of CO2 emissions for nonresidential buildings.