Addressing the Energy Performance Gap: Post Occupancy Evaluation

To address the ‘clear evidence of a performance gap between the design & as built performance of new homes’ [1] the Zero Carbon Hub is proposing that from 2020 it must be demonstrated that 90% of all new homes must meet or perform better than the designed energy performance. In addition to this emerging industry [...]

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Part L1A 2013 sets high energy efficiency targets

The Approved Document L1A, 2013 edition was published in November alongside the Standard Assessment Procedure 2012.  These two documents bring long-awaited clarity to the subject of energy and CO2 performance targets for new dwellings and will allow house builders to begin planning their routes to compliance. Both the Target Emission Rate (TER) and newly introduced [...]

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London Plan moves to 40% carbon dioxide reduction on regulated energy

As we reported in September, the Greater London Authority (GLA) has clarified that the move to a 40% CO2 reduction over Building Regulations Part L 2010 (London Plan Policy 5.2) came into effect from the 1 October 2013. This applies to both residential and non-residential development. The GLA is seeking this reduction on all referable [...]

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Fabric Efficiency First?

There is a recent trend in planning policy to emphasise energy demand reduction ahead of more costly low carbon energy supply options. In 2009 the zero carbon hub consulted on a new parameter to encourage more consideration of the Fabric Energy Efficiency (‘FEE’) of a home’s construction. The FEE credit was introduced into the Code [...]

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Ventilating dwellings in noise exposed areas

Developers must carefully consider the technical impacts of any planning requirements which preclude the use of openable windows in residential developments.  The limited technical solutions currently available mean that any such requirements will severely constrain the ventilation strategy and have a direct impact on Part L1A CO2 compliance. Where planning requirements for developments in areas [...]

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We extend our work on Europe’s largest regeneration project

Hampton House – Nine Elms Following our work through the planning process, Richard Hodkinson Consultancy has recently been appointed to continue involvement on this high-quality mixed-use scheme.  We are to provide a range of environmental assessments through the design and build program. The Nine Elms project, on the south bank of the Thames, is the [...]

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Thermal mass: more complex than it first seems

The effects of thermal mass on a building are not straightforward. The effects of high thermal mass can be positive or negative depending on the fabric specification of a building. The graph below illustrates the effects of thermal mass on a semi-detached dwelling, by showing the change Dwelling Emission Rate (DER, measured in kg CO2/m2/yr) [...]

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SAP 2012 Consultation

A consultation on the Government’s Standard Assessment Procedure (SAP) for domestic energy use was released last week. Not yet available is the related and eagerly awaited CLG consultation on the Building Regulations Part L 2013. It is this second consultation that should contain details of the next big step-change in housing standards taking us towards [...]

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Demonstrating compliance with Part L 2010

Is a good EPC rating a guarantee of good energy performance? Rightly or wrongly, there has been a concern that design criteria for energy efficiency, which are used by energy assessors as the basis for energy performance certification, have not always carried through to the final construction of projects. New requirements in force with the [...]

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Code level 3 energy measures

Our download highlights the typical improvements that are made in order to comply with a 25% reduction in CO2 emissions for Code Level 3. Click to enlarge.

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