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 who's 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, Tinie meets a couple adding not one - but three! - mega extensions to the home of their dreams. In Hertfordshire, a newly qualified architect builds for his first clients: his 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
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