Tinie checks out Amy and Simon's million-pound glass structure by the sea in Hampshire, and Alan and Lynda's multigenerational living under a bold, angular ski slope roof in Herefordshire.
Tinie meets a couple who are building an enormous subterranean extension on their Grade II listed gate lodge, and visits an £11 million mega-basement in Knightsbridge.
Tinie meets a couple who've added a modern, uncompromising 21st-century extension to their 17th-century Cotswolds cottage, and checks out a unique up-and-over arch window.
Tinie checks out a pioneering transformation and reinvention of a 19th-century former timber yard in south London into a high-tech, modern, ultra-energy-efficient family home.
In Warwickshire, a couple attempt to add an eco-friendly pool and spa to their curved mega-home. Tinie also visits two other super-luxe subterranean extensions devoted entirely to lives of leisure.
Tinie meets a Silicon Valley tech entrepreneur letting a graffiti artist loose on his Victorian house in Peckham. And can a couple extend their distinctive 1960s Essex home without ruining it?
In Lincolnshire and Hertfordshire, Tinie meets a couple adding three mega extensions to the home of their dreams and follows a newly qualified architect's build for his first clients - his own family!
On the Kent coast, Tinie follows one couple plundering their wedding fund to create a Miami-style beach house, and another turning their 1960s home around to face the sea.
In London, Tinie follows two couples: one building the wellness extension of their dreams and another adding a floating terracotta 'pod' to their rundown 1930s home.
Tinie follows a couple adding a glass box mega-extension to their classic country pile in Manchester, and a couple hoping to make their big design dreams come true in London.
