Ship's captain Dorran promised his family he'd build a super-modern underground lair on a hill outside Canterbury. But as the epic build hits choppy waters, will Dorran fulfil their dream? [S,W]
Retired racehorse breeder John builds a million-pound, high-tech, accessible glass pavilion with a wildlife garden for him and his wife Helen, whose mobility was badly affected by a stroke. [AD,S,SL]
Retired racehorse breeder John builds a million-pound, high-tech, accessible glass pavilion with a wildlife garden for him and his wife Helen, whose mobility was badly affected by a stroke. [AD,S,SL]
Harry and Briony are relocating to Cornwall and building an American modernist house inspired by 1980s teen comedy Ferris Bueller's Day Off. But it's a huge and challenging project. [S,W]
Energy conservationist Andrew plans to build a radical, self-heating home by storing the warmth of the summer sun in insulated earth banks. But will this gigantic thermal experiment work? [S,W]
In Devon, Joe and Claire hope to create 'one of the greatest homes on the planet' that looks like a huge work of art. But from the start, the expensive build faces mind-boggling problems. [S,W]
Andy and Jeanette attempt a precarious clifftop build on the west coast of Scotland. There are battles with extreme weather, overrun budgets, an emotional shock and a last-minute change. [S]
Retired racehorse breeder John builds a million-pound, high-tech, accessible glass pavilion with a wildlife garden for him and his wife Helen, whose mobility was badly affected by a stroke. [AD,S]
In 2011, Edward and Hazel set out to build a lighthouse on the north Devon coast. By 2019, they were near bankruptcy with just a rusting shell. Three years on, has anything has changed? [AD,S,SL]
In 2011, Edward and Hazel set out to build a lighthouse on the north Devon coast. By 2019, they were near bankruptcy with just a rusting shell. Three years on, has anything has changed? [AD,S,SL]
Kevin McCloud meets Jaime and his wife Mimi, who are converting a listed mini castle in Buckinghamshire into a family home. But will their wildly optimistic schedule be a problem? [S,W]
Stuart and Rosie turn their 1960s bungalow on the Wirral into a slick piece of 21st-century architecture. But what will the neighbours make of their ultra-modern wooden design? [AD,S]
Fred and Saffron build a family home on a steep slope in the Peak District, with the top floor in plain sight and two post-industrial-style floors buried into the thick limestone below. [AD,S]
Joe and Lina are fed up with renting but can't afford to buy. So they're building their own clever, space-saving two-bedroom home for £160,000, on a tiny plot in east London. [AD,S]
Paul and Amy Wilkinson build a lakeside home in Lincolnshire with five circular timber buildings linked by raised walkways. But Paul's health suffers as he struggles to finish it in a year. [AD,S]
Despite a lack of experience, former RAF pilot Jon project manages the construction of a three-storey upside-down home clinging to a steep slope in the Malvern Hills in Worcestershire. [AD,S]
Steph and her husband Alex plan to build a contemporary farmhouse on Steph's grandfather's old farmland. But a lack of money leads to a long spell in a caravan and a total redesign... [AD,S]
Edward and Hazel plan to build a shining white art deco lighthouse on a rugged but beautiful clifftop in north Devon. But almost immediately, their wildly optimistic plan runs into trouble. [AD,S]
Architect David Parsons has designed a sleek, black-clad house hidden away in an idyllic Essex woodland. But will having no windows on two sides make this dream home into a bunker? [AD,S]
Matt and Sophie want to break the mould by building a family house of fun, featuring secret dens, a firefighter's pole and a James Bond room. Just what will this house look like in the end? [AD,S]
In north London, Mark and Penny seek to blend period and cutting-edge architecture as they restore a derelict Victorian gatehouse on a steep hill, and add a giant black zinc-clad extension. [AD,S]
Angelo Mastropietro plans to spend £100,000 to almost single-handedly build himself a 21st-century cave in a damp, dark, abandoned space in Worcestershire. Can it be done? [AD,S]
Tom and Danielle use their steam-bending skills to build a wavy wooden house full of twisty furniture in Cornwall. But with a relatively modest budget, have they taken on too much? [AD,S]
In Devon, Mark and Candida are building a timber-clad house in the shape of a plough. It includes a huge, complex, curvy roof, a timber frame and a working barn made of steel and Devon cob. [AD,S]
Kevin McCloud meets Clinton from West Sussex, who's willing to spend whatever it takes to build one of the largest homes ever to feature on Grand Designs. [AD,S]
Paul Rimmer has worked with bricks for 40 years, renovating Victorian houses in Bolton. But now he plans to hand-build his own state-of-the-art wooden home - if his funding holds up. [AD,S]
Richard and Felicia set out to turn a vast underground water reservoir near the Humber Estuary into a family home - an almighty feat of engineering. Then a life-threatening illness strikes. [AD,S]
Natasha Cargill wants to build a home shaped like two enormous periscopes near Norwich. But a limited budget and tight planning restrictions start to take their toll. [AD,S]
In Northern Ireland, young farmer and architect Patrick hopes to make a home out of four large shipping containers welded together to form a giant cross. But his budget is under threat. [AD,S]
Rebecca and Gregory have a highly ambitious plan to transform a small, damp, single-storey bungalow in Cornwall into a cutting-edge home, and are determined to do much of it by themselves. [AD,S]
Chris and Kayo build an intricate, radical and complicated home on protected land close to one of Britain's most historic abbeys. But do they actually like what they've built? [AD,S]
Architect Ben Hebblethwaite builds a nautically styled home that floats on stilts for his boat-loving uncle James Strangeways. But a contractor problem puts the entire project at risk. [AD,S]
Andy and Nicki Bruce try to build an experimental flood-proof, floating house on an island in the River Thames. But building such a complex design on a site with limited access isn't easy. [AD,S]
Kevin McCloud meets Martin and Kae Walker, who want to build the ultimate family home near York, inspired by a giant farm shed and featuring an ingenious 'mothership' for good parenting. [AD,S]
Kevin McCloud visits Stephen and Anita's cutting-edge, bright-orange building project on the South Downs. Do they have enough money? And what will the neighbours think? [AD,S]
In rural Wales, Tamayo and Nigel Hussey want to build a Japanese house complete with roof bath, tatami room and sliding paper walls. But will their lack of detailed drawings cause problems? [AD,S]
Rob and Kay want to build an architectural monument high on a cliff top in north Wales. But this sleek glass-fronted clifftop villa represents the biggest gamble of their lives. [AD,S]
Young couple Ben and Rachel decide to turn an average 1950s house in south London into a modernist masterpiece. But will it get past the local planning department? [AD,S]
Michele and Michael want to transform a derelict 100-year-old blacksmith's in County Antrim on a tiny budget and by hand. But the odds and the weather are stacked against them. [AD,S]
With only £500 in the bank, Simon and Jasmine plan to build a three-bed Grand Design on a hill in rural Pembrokeshire and become self-sufficient within five years. Is it really possible? [AD,S]
Tracy and Steve Fox want to build an 'urban shed' out of industrial materials in an old milk yard in south east London. But their choice of unorthodox materials proves challenging. [AD,S]
Confirmed city dwellers Michael Butcher and Phil Palmer have moved to the country to run a farm, start a microbrewery and create a vast, dramatic 21st-century farmhouse to live in. [AD,S]
In Devon's stunning Blackdown Hills, engineer Stephen and horticulturalist Elizabeth build one of the most ambitious homes ever seen on Grand Designs, taking inspiration from a shell. [AD,S]
Geoff's selling up in Spain to build a flood-resistant architectural marvel on a flood plain on the Essex coast. Will he sink or swim when Covid hits and Spain's property market collapses? [S,W]
Kevin McCloud meets flying instructor Colin Mackinnon and trapeze artist Marta Briongos, who are building an incredible metal home next to their very own airfield in Scotland. [AD,S]
Kevin McCloud returns to Devon to see Kevin McCabe, who wanted to build one of the biggest ever houses on Grand Designs - out of mud. Seven years after it began, the cob castle is complete. [AD,S]
Kevin McCloud returns to Somerset to catch up with Ed and Vicky and find out the latest on their off-grid cowshed conversion, which they turned into a home and business space. [AD,S]
Kevin McCloud returns to north Cornwall, to catch up with one of his favourite Grand Designs: Rebecca and Gregory's radical, experimental timber refurb of an old bungalow. [AD,S]
Kevin McCloud returns to one of the most ambitious Grand Designs ever: a million-pound amphibious house on the Thames. Now that it's finished, does it actually float? [AD,S]
Kevin McCloud meets Kevin McCabe, an exponent of the ancient art of cob building, who wants to construct a castle entirely of mud. The huge scale of the task soon becomes clear. [AD,S]
Jonathan and Deborah are building a semi-subterranean, Hollywood Hills-style mansion with a swimming pool on a hemmed-in site in north London. But what will the neighbours think? [AD,S]
On the Isle of Skye, one of the most beautiful landscapes in Britain, Rebecca and Indi are building a turf-roofed contemporary home to withstand gale-force winds and some sceptical locals. [AD,S]
This episode follows actor Sean Simons' epic bid to turn castle ruins in Ireland into a spectacular fantasy home the hard way: with no architect and in the middle of a recession. [AD,S]
In 2019, Olaf and Fritha set out to build on a tricky slice of land in West Sussex, boxed in by an A-road and a train line. Kevin returns to see how their triangular triumph is faring. [AD,S]
In 2013, Jon and Noreen started building a giant treehouse in Gloucestershire. By 2016, the money ran out. Are they finally living up in the trees? [AD,S]
In 2015, Vicky and Ed set out to transform a derelict Somerset cowshed into a 21st-century smallholding. Now Kevin returns. How much did this wildly ambitious project change their lives? [AD,S]
Kate and Rob replace their 1940s past-it prefab with a bespoke, modern, factory-built home using volumetric modular construction. But will it feel like the characterful home they dream of? [AD,S]
In 2011, Edward and Hazel set out to build a lighthouse on the north Devon coast. By 2019, they were near bankruptcy with just a rusting shell. Three years on, has anything has changed? [AD,S]
Zimbabwean-born Davi and Matt from Australia set out to build a house in Home Counties suburbia with a radical multicultural design. Can they successfully balance a wide range of looks? [AD,S]