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 trainline. Kevin McCloud returns to see how their triangular triumph is faring.

In 2017, Leigh and Richard bought a derelict Cornish flour mill to restore and turn into their home. By 2021, the rooms and landscaping were still unfinished. Has the grind finally paid off?

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 really all be worth it in the end?

Furniture maker Lucinda wants to construct a beautifully crafted, two-storey, highly insulated timber home in the woodland of South Herefordshire on a very modest budget, and without using heavy machinery.

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.

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.

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?

In the Wye Valley, Rosa and Craig battle the never-ending elements to convert a family-owned, century-old, decommissioned steam railway reservoir into a unique living space