On the whole one can expect to lose credits when swapping from Code 2009 to Code 2010. The main implications on the credit scores are listed below: This summary was prepared by my colleagure Clare Murray.
Ene 1 – Less credits are available for the same dwelling when moving from the 2009 to the 2010 version. I.e. A code level 4 dwelling used to achieve 8 credits for Ene1 (44% improvement), whereas it would now achieve 3 (25% improvement). To add to this, the credit weighting for energy section has also gone down from 1.26 to 1.17 making the credits achieved worth less. In the case of a code level 4 building 6.57 credits would be lost after the weightings are applied. To achieve 8 credits in the 2010 Code an 85% improvement would be required.
The credit weighting applies to all credits scored in the energy section, therefore all previous credits will be reduced by 0.09 per credit.
Ene 2 – It is likely that credits can be gained in this section. The implications of thermal bridging and Fabric Energy Efficiency Standards have yet to be fully clarified.
Ene 3-9 – The scores from these sections remain mostly unchanged apart from the reduction in the credit weighting.
Something to note for Ene 8 (cycle storage) is that it appears that non fully enclosed cycle stores are no longer compliant for communal use. I.e. three sided structures with roofs no longer comply.
Wat 1 & 2 – No change to credit scores.
Mat 1, 2 & 3 – No change to credit scores.
Sur 1 – A surface water drainage engineer is required to determine the implications of the changes to the SUDS credits.
Sur 2 – No change to credit score.
Was 1 – Compliance with the new inclusive design principles (IDP) checklist is required. This checklist has been applied to Was 1, Was 3 and Hea 3 and deals with access issues for residents.
The credit weighting has also changed in this section from 0.91 to 0.8, causing a general loss of credits.
Was 2 – The Site Waste Management Plan will need to be revised following the updates to achieve 1 of the 3 credits in this section. To achieve the remaining credits available either 50% (for 1 credits) or 85% (for 2 credits) by weight or volume of non-hazardous construction waste generated by the project needs to be diverted from landfill.
Was 3 – Compliance with the new inclusive design principles (IDP) checklist is required.
Pol 1 & 2 – No change to credit scores.
Health and Well-being
Hea 1 &2 – No change to credit scores.
Hea 3 – Compliance with the new inclusive design principles (IDP) checklist is required.
Hea 4 – Dwellings will need to be able to meet the new Lifetime Homes Criteria to achieve 4 credits. For developments on steeply sloping sites 3 credits have been made available.
Man 1, 2, 3 & 4 – No change to credit scores.
Eco 1, 2, 3, 4 & 5 – No change to credit scores.