Watch Grand Designs season 17 episode 4 online for free. After artist and teacher Michelle Parsons recovered from serious illness, she and her architect husband David decided it was time to seize the day and build the private hideaway they’d always yearned for. David devised a sleek, black-clad, three bedroom house for a beautiful plot in an Essex woodland, with a separate studio for Michelle. The couple project manage the build, which gets off to a sticky start, including a dangerous gas leak and torrential rain. As the building finally starts to take shape, the big question remains – by choosing to eliminate windows on two sides of the property, could their new home turn out to be just a gloomy bunker?