Grand Designs is een Britse documentaire van de zender Channel 4. De serie ging in première op 29 april 1999.
Sommige mensen dromen alleen van hun ideale huis, anderen bouwen het gewoon. Kijkers krijgen de gelegenheid om het hele bouwproces te volgen: van de allereerste schetsen op papier tot en met het daadwerkelijke resultaat. De altijd kritische Kevin McCloud bezoekt de locaties en praat met de eigenaars over hun ideeën en over de problemen die zij tegenkwamen tijdens de realisatie. In Grand Designs lijkt geen enkel huis op het andere, maar wat ze wel gemeen hebben is dat ze allemaal erg bijzonder en opvallend zijn.
Pru and Richard make plans to build a bespoke family home on an industrial site in the middle of the Midlothian countryside. However, the plot of land, an old industrial site complete with lime kilns, comes with a condition. They can build on it only if they become custodians of the kilns, and more importantly, that the house they build blends in with the landscape. It's a huge challenge and Pru and Richard want to build an uncompromisingly modern and, moreover, large box of a house. It could become a blot on the landscape instead of an enhancement. Pru and Richard sensibly plan to start building in the summer, but because it is an industrial site, are forced to do numerous soil tests. The build is delayed until the harsh Scottish winter. With Richard grafting hard to pay for the build, it's down to Pru, a food writer, to project manage. Naively she doesn't consider this a full time job, but when her trusty builder goes away and she is left to manage alone, she starts to realise just what she's let herself in for. This giant of a house is a giant of a project. Until it's complete, nobody is quite sure whether it will fulfill its brief.