Kevin McCloud revisits 'clean-air' house in brand new Grand Designs

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New Grand Designs on Channel 4 revisits 'clean-air, hypoallergenic' house.

The Channel 4 show is now entering its 25th series, with previous episodes seeing everything from giant curved glass homes to mansions built out of clay and former water towers. Now, more keen builders are ready to take on the task, not for the faint-hearted, as Kevin travels around the UK to see the new builds in Grand Designs. The latest series kicked off with Sarah and Howard in Worthing, who built their dream "floating home".

They were followed by Sarah and Pip in Bedfordshire, who brought a "rickety" old barn back to life. In week three, Kevin met 82-year-old Kathryn, who wanted to build an accessible, ultra-sustainable home. Last week saw a revisit to Graeme and Melanie, who completed their 'unapologetically modern' in London.



This week sees Kevin return to London as he catches up with Elinor and Born. In the latest episode of the Channel 4 show, Kevin returns to Elinor and Born, whom he last saw in 2017. The couple are building a clean-air, hypoallergenic house in south-west London for them and their three children.

The pair wanted to build the home to help with the extreme allergies and serious asthma their sons suffer from. The plan is to build a "partially submerged, shed-like building constructed with low-toxin materials and a powerful ventilation", according to the Radio Times. Recommended Reading The 'unusual' back-garden site results in mass access issues on top of the tight schedule, budget and tough decisions.

Seven years on from the house being completed, Kevin is back to see if the home has helped the family's health. Grand Designs is on Channel 4 on Wednesday evenings at 9pm and is available to stream on All4..