In West Yorkshire's rolling hills, Kara and Jonny build a striking stone and zinc home. The challenges come in thick and fast, but can they pull it off and redefine accessible design? [AD,S]
Can Leigh and Richard transform a derelict 17th-century Cornish flour mill, which is full of rotten timbers and riddled with structural cracks, into a warm, contemporary four-storey home? [AD,S]
Can Zahid and Ferzana transform an old coastguard station on an exposed East Yorkshire headland into a bold, three-storey glass box of a family home? [AD,S]
While recovering from leukaemia, Toby planned a radical new home - wrapped around an ancient oak tree - to improve his health and provide for his family. But building it isn't easy. [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? [AD,S]
Dan and Nina want to build a unique family home, but their plot is dominated by a pond filled with local drainage. Will their West Sussex house be sublime and sleek or a Shrek-like swamp? [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]
Graeme and Melanie want their new home in Hackney to celebrate their blended family. But squeezing the bright red-clad house onto their tiny garage plot proves a huge challenge. [AD,S]
Devoted dad Danny builds a sustainable but affordable stilted house up among the trees in his garden. But with no self-build experience and spiralling costs, can he do it on ambition alone? [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]
In Derbyshire, Mike and Sarah set out to build a multigenerational longhouse. But with a complicated roof, a shortage of materials and an unexpected bereavement, it proves far from easy... [AD,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]
Duncan and Liz build a revolutionary Passivhaus Premium powerhouse of a home in the Cotswolds. But with a spiralling schedule and lonesome living, will it all be worth it in the end? [AD,S]
Furniture maker Lucinda wants to construct a beautifully crafted, two-storey, highly-insulated timber home in woodland in South Herefordshire... without using heavy machinery. [AD,S]
Master carpenter Olaf faces the biggest challenge of his career: creating an oasis for himself and his partner Fritha on a sliver of land in Sussex squeezed between a railway and an A-road. [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]
Tony and Ara want to create a house of healing dedicated to health and wellbeing, on a beautiful woodland clearing near Henley-on-Thames. But the site is fraught with emotional landmines... [AD,S]
Jon and Noreen dreamt of living in a giant treehouse in Gloucestershire. But three years into the build, the money ran out. Are they finally living up in the trees? [AD,S]
Corinne plans to build a beautifully crafted, wedge-shaped home on a sliver of garden down the side of the house she's lived in for 24 years. But it sits in a strict conservation area... [AD,S]
In south west London, Elinor and Born plan to build Britain's first hypoallergenic house, to alleviate their two young sons' life-threatening allergies, in a race against time. [AD,S]
Adrian and Megan plan to build a concrete home in Sussex. No carpets, no plaster - just concrete, inside and out. And with cutting-edge technology that's never been used for houses before. [AD,S]
In south west London, Kevin McCloud meets Justin, who's restoring a neo-Gothic cemetery keeper's lodge and converting its toilet into a luxury ground-floor extension with a moat and pool. [AD,S]
Young architect and shed fanatic Micah Jones plans to turn a dilapidated agricultural building into an upside-down four-bedroom home in County Down's rolling countryside. [AD,S]
Design engineer Mark, who has paralysis from the waist down, plans to build a cutting-edge, accessible family home for £600k. But it's a huge emotional strain for him and his wife Penny. [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]
Kevin McCloud revisits Strathaven in Scotland, where flying instructor Colin and trapeze enthusiast Marta built an incredible metal home inspired by aircraft hangars on their own airfield. [AD,S]
In south east London, Beth and Andrew rescue a crumbling Victorian dairy, hoping to turn it into a shabby chic family home fit for modern life. But is the building too derelict? [AD,S]
Cumbrian couple Rob and Ruth plan to transform a 200-year-old former blacking mill of historic importance into a new-build hybrid. But can they conserve its original atmospheric magic? [AD,S]
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. [AD,S]
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. [AD,S]
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? [AD,S]
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. [AD,S]
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? [AD,S]
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? [AD,S]
Kathryn, who's lived on the same London street for 60 years, is building a mirror image of her Edwardian home right next door, but with a 21st-century twist. [AD,S]
While recovering from leukaemia, Toby planned a radical new home - wrapped around an ancient oak tree - to improve his health and provide for his family. But building it isn't easy. [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? [AD,S]
Dan and Nina want to build a unique family home, but their plot is dominated by a pond filled with local drainage. Will their West Sussex house be sublime and sleek or a Shrek-like swamp? [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]
Howard and Sarah build a sleek, angled, metallic floating home on a tidal estuary near Worthing. But with the constant tidal shifts disrupting construction, will it sink or swim? [AD,S]
Gretta plans to build a Malaysian-inspired pavilion, designed by her nephew, on her sister and brother-in-law's land in Ely. Will this family affair and story of renewal end in harmony? [AD,S]
Iain and Jenny build an enormous black minimalist rectangular building in the middle of a 19th-century country estate in the dramatic Scottish countryside. What will the neighbours say? [AD,S]
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]