Grand Designs - Season 21 (2021)

Justin plans to restore a neo-Gothic cemetery keeper's lodge in south-west London and convert its toilet block into a luxury extension complete with a moat and swimming pool. But can he keep his budget under control?

Kevin meets Greg and Georgie who plan to convert a cavernous, dilapidated, 35-year-old barn in Georgie's parents' garden in Kent into a peaceful safe haven. But the building work soon squeezes their budget.

Nathan and Amye are building a cathedral-like home modelled on local Dutch barn houses with a sleek twist and a 5000-tile armadillo roof. But the pressure mounts for project manager Nathan.