The couple met when Kevin was in his thirties and tied the knot in 1996.
In December 2019, after 23 years of marriage, a spokesman for the presenter said: "I can confirm that, sadly, Kevin and Suzanna separated. We won't be making any further comment."
It's not known why the couple separated, and the reasons behind their divorce remain a mystery.
It was reported that the pair had secretly tied the knot in November 2022, before enjoying a honeymoon together.
Does Kevin McCloud have any children?
During his marriage to Suzanna, the pair had two children together, Milo and Elsie.
Kevin also has a son and a daughter from a previous relationship called Hugo and Grace.
The presenter tends to keep his family life private and out of the spotlight.
What TV shows has Kevin McCloud been in?
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Kevin has been on several showsCredit: PA
Kevin made his first appearance on TV as a guest presenter on Homefront on BBC Two.
He is most famously known for being the presenter and writer of Grand Designs.
He also wrote and presented Grand Designs Indoors, Grand Designs Abroad, and Grand Designs: The Streets.
His other TV work included Don't Look Down (2000), Demolition (2005), The Stirling Prize: Building of the Year (2004-2008), and Kevin McCloud And The Big Town Plan (2008).
In 2008, he appeared as the Star in a Reasonably-Priced Car on Top Gear, and presented Kevin McCloud's Grand Tour on Channel 4 the following year.
He visited Mumbai's Dharavi slum for two-part documentary, Kevin McCloud: Slumming It in 2010, and fronted Man Made Home in 2011,
Other credits include Escape To The Wild, Rough Guide To The Future and Celebrity Snoop Dogs.
When does the new season of Grand Designs start?
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Kevin has been at the helm of the fan-favourite series since its debutCredit: Channel 4
The new season of Grand Designs will begin on Sunday, September 25th, 2024.
It features a new couple from the UK as they start a self-build project.
Kevin provides guidance with his expertise, but the final decisions rest with the contributors.
Since its launch, Grand Designs has produced more than 150 episodes.
The property show has been nominated for six Bafta TV Awards and scooped a gong in the Features category back in 2015.
Kevin has been at the helm of the fan-favourite series since its debut.
In anticipation of the show's return, Channel 4 previously released a special episode. It featured Kevin revisiting the "saddest ever property" from Grand Designs, marking the 25th anniversary of the reality series.