Grand Designs: The Streets

Tom and Lori from London decide to leave the city and build a home at Graven Hill in Oxfordshire to give them a taste of the countryside and allow them to embark on an architectural adventure. They plan to build as much as they can themselves while leaving the groundworks and frame to the professionals but before they can begin they discover the groundworks are out of alignment with the frame.

Jonathan uses a new experimental system that uses wooden boxes held together with only bolts to build his home in York. With a plan to build three storeys, it will be the largest structure ever made using this method.

Shop owner and jewellery maker Karen builds her version of a mountain hut in central Glasgow, inspired by hikes in the Scottish Highlands. After waiting five-years to get started, the project leaps into action when Karen and her neighbour agree to lay out their foundations together using the same contractor. Retiree William is building an old-style home next door, the pair come across some hurdles building next to each other.

Kevin McCloud and Natasha Huq return to Gravern Hill to catch up with Amanda and Chris and Joanna and Ben who decided to build their own houses on the UK's largest self-build site. Amanda and Chris were living just outside Glasgow in a house that became very cramped with their three children when they chose to not only build their own home but design it themselves without an architect. Joanna and Ben built an American ranch-style house and have been adding to it ever since to ensure their unique vision stands out.