Zahid and Ferzana ambitiously set out to transform an old coastguard station set on exposed East Yorkshire headland into a cantilevered, three-storey steel and glass box.

In Lincolnshire, high-flyers Zara and Giuliano set out to build a 400-square-metre malthouse-inspired home, but run into problems from the get-go. Can they get the project off the ground?

In West Yorkshire's rolling hills, Kara and Jonny build a striking stone and zinc home. The challenges come in thick and fast, but can they can pull it off and redefine what accessible design means?

Tony and Ara want to create a house of healing dedicated to health and wellbeing, on a beautiful woodland clearing near Henley-on-Thames. But the site is fraught with emotional landmines...

In Northamptonshire, Adam and Tassy convert a 20-metre-high water tower into a fun family home with curved walls, slides, secret rooms, a firefighter's pole, swimming pool and a sky garden.

On a nostalgic revisit to the first ever Grand Design, from back in 1999, Kevin finds out if Tim and Jules are still flying high in their timber-framed home on the cliffs above Newhaven.