David and Lindsay have big plans to build a sustainable, eco-house on a brownfield site in Bristol. Can Leah and Sam double the size of their Wiltshire two-bed cottage amidst a shortage of supplies?

Julia and Maktuno thought they had struck gold with their trendy three-bed in Stoke Newington, until they discovered that years of neglect had ravaged the entire house. Can they avoid financial ruin?

Can Marie realise her dream of transforming her ground-floor flat into an open-plan space? Ralph converts a two-car garage into a stylistic cube home. Kelly and Stephen take on their entire house.

Chrissy and Nick want to reconfigure their pokey three-bed 1930s semi, but with their budget blown, can they complete their big plan? Graham and Stephen bring the outside in with an indoor garden.

Becca and Dan call in the reinforcements to get their year-long project over the line before baby number two arrives. Carolyn and Simon create a pop art-inspired, super bold kitchen.