Code for Sustainable Homes
The Code for Sustainable Homes (Code) is an environmental assessment method for rating and certifying the performance of new homes.
The guidance which set out the current assessment process and the performance standards required for the Code is: The Code for Sustainable Homes: Setting the Sustainability Standards for new homes that was published on 27 February 2008.
Sound insulation is contained within the Health and Well-being section of the Code. 
Four credits can be achieved for sound insulation performance. Credits are provided for achieving higher sound insulation performance than those given in Approved Document E, and demonstrating it by either Sound Insulation Testing or the use of Robust Details.
The Code for Sustainable Homes: Technical guide "sets out the requirements for the Code, and the process by which a Code assessment is reached. It aims to make gaining a Code assessment as simple, transparent and rigorous as possible".
The latest version Technical Guidance which came into effect from the 11 November 2010 replaces the 'May 2009 Version 2' of the Code Technical Guidance with a summary of the main changes made to the Code provided in The Code for Sustainable Homes: Summary of the changes to the Technical Guidance - 2010 publication.