Design Buy Build Issue 17 2015 | Page 21

Yard House Mews Development The proposal will incorporate high standards of energy efficiency and address aspects of renewable resources and sustainable design within the development. The development is designed to comfortably achieve Level 4 of Code for Sustainable Homes, with at least 25% reduction in CO2 emissions across the site in line with the London Plan Energy Hierarchy. The fabric specification and structural frame will include the use of A and A+ rated materials, featuring CLT timber panel structure, low carbon concrete, self-finished materials and zero VoC. The insulation levels will generously exceed the minimum standards of Part L in terms of Uvalue performance, giving the development a total CO2 emission rate of 28,789.34Kg/year and therefore a CO2 offset target of 7,197.33Kg/year The detached dwelling house on the western end of the site will be designed to Passivhaus Standard and, in addition to measures that will be implemented across the s ite, will include wireless switching and air source heat pump. A system of photovoltaic panels will be placed on the roofs, southern elevations and across the communal landscaped areas to reduce the site’s CO2 emissions by at least 25%. This has been calculated to be equivalent to a minimum of 15.6Kwp across the whole site. Efficient independent heating systems will be provided, with time & temperature zone control & Weather Compensators. These will allow the eventual occupants to exercise maximum control over their heating system and thus reduce energy consumption. Energy 021 efficient lamps will be installed in each light fitting, whilst all appliances will carry A+ energy rating. Water consumption is also included in the calculation of a property’s energy consumption and each property will therefore adhere to the requirements of Approved Document G with maximum internal water consumption of 125 litres per person per day. Further measures, such as grey water recycling, rainwater harnessing and irrigation will also be implemented, whilst ecological value of the site will be improved dramatically through introduction of numerous new plant species.