This episode follows two ambitious builds as owners strive to create the perfect home for each of their retirements.

Kevin and Lesley have lived on the Isle of Sheppey for decades, but have only just secured the dream location for their home. Having planned it for years, the couple have designed an eye-catching home which echoes the waves of the nearby sea. Piers Taylor isn't as enthusiastic about the wave-shaped roof as the couple, but is far more concerned that they haven't focused on what really matters - how they will actually use the spaces. Kieran wants them to reflect the setting in a more subtle way. He shows them a house in Dungeness where tricks on every scale are at play, from windows framing features in the view to flooring gently drawing your eye from room to room, plus a simple trick of marking out a dining area using just paintwork.

As Lesley and Kevin battle on, we return to the most ambitious build ever featured in the series and nine years in the making. Kieran and Piers return to help farmers Sue and Tim who are finally fitting out the interior of their ambitious cantilevered home. Kieran believes the secret for successfully completing their home is within a building that has won the highest accolade in British architecture. But with less than £10k to spend, what will the completed interior look like when Piers and Kieran return for a final time? Show less