Grand Designs

Constructing a home on the edge of a precarious cliff-top on the west coast of Scotland is a particularly brave project. But this is the dream of Andy and Jeanette, who plan to build high above jagged rocks and crashing waves. But they soon face battles with extreme weather, budget overruns, and a sudden emotional shock. And a last-minute design change might completely derail all of their plans.

Entrepreneur Paul is a business go-getter used to things happening quickly and accurately. But when he applies this determination to his dream home, things start to fall apart. He wants a fiendishly complicated circular building linked by walkways and he wants it built in a year. But the stress of getting it right soon lands him hospital and the entire project is in danger of collapsing.

Design engineer Mark lives with his wife Penny in a beautiful old farmhouse. But there's a problem. Mark is paralyzed from the waist down and needs a cutting-edge, wheelchair-friendly family home. Mark's ambitious plans soon outgrow his budget and complications arise. And when personal circumstances suddenly change, the strain on the couple becomes almost unbearable.

Richard and Felicia dream of transforming an underground water reservoir into an imposing family home. It's an epic task, made all the difficult as, to save costs, they want to do it virtually alone without a designer or architect. But the complexity of the project soon threatens to jeopardize the entire build. And then a life-threatening illness strikes.

After surviving a life-threatening illness, musician Toby is determined to build his dream house. His plan includes a series of complex, interlocked structures set around an ancient oak tree. But protecting this tree proves to be troublesome and the difficulty of the project soon affects Toby's health. Will his high architectural ambitions lead to abandoning his original vision?

Lighthouses were never designed to be lived in full-time. But Edward and Hazel plan to transform a shining white Art Deco lighthouse on a rugged beautiful clifftop into a family home. Almost immediately, their wildly optimistic plans run into trouble. The terrain is inaccessible, promised loans evaporate and soon the security of the whole family is in jeopardy. Can their dreams be salvaged?

Colin and his partner Marta first appeared on Grand Designs in 2011, planning to build a quirky metal house next to the runway where they operate a flying school. But the project was soon ravaged by adverse weather, money issues and a disastrous fire. Six years on, Kevin McCloud returns to see if their home, inspired by aircraft hangars, is finally finished.