Bringing together the practical experience of building innovative new homes on the BRE Innovation Park, this BRE Trust report identifies key practical lessons for developers and housebuilders. The material was first published in 2008 as a 4-part BRE Information Paper and is reproduced here in a new format to bring it to a wider audience. When the Code for Sustainable Homes was published in 2006, four construction companies (ecoTECH, Hanson, Stewart Milne Group and Kingspan Offsite) undertook a challenge to design and build a Code-compliant house on the BRE Innovation Park. The lessons learnt by all parties during the process are significant and they are recounted here for the benefit of all in the construction industry. Building to the Code brings many new challenges, but the buildings on the BRE Innovation Park show that it can be done, albeit with some refinements as volume increases.