The glamorous former model, 50, and David, 64, – who has won 16 Grammys and worked with stars including Whitney Houston, Madonna and Barbara Streisand – built the six-bedroom Malibu mansion themselves.
"I designed every inch of this place and managed a team of 100 builders," said Yolanda. "It was a huge project. I designed it for my family. I need to stay connected to the earth and this house is very in tune with nature.
"It was a much bigger project than I had anticipated. It is a beautiful home but it requires so much upkeep. I'm a perfectionist – even the mulch on the driveway has to look a certain way and with a house this size, it's very hard to stay on top of everything."
Yolanda, who has three children from her previous marriage to real estate mogul Mohamed Hadid, added that she takes her role as homemaker very seriously.
"It's not only my job to make my home the best for my husband – my king – but also for my children," she said. "From very early on, I would make their beds with the best European down duvets. I always wanted them to want to come home to their own beds because they were so comfy and reminded them of mummy."
"I love it when my husband says, 'I'm proud this is my home and my woman,'" said Yolanda. "Some people might say I'm submissive or weak but, no, it's my strength. David's out all day, working hard; I love for him to come home and have a homemade dinner. Every night of the week, I sit down with my children to eat. Even if I have an engagement somewhere, I will sit with them before I go out.
"There are so many dysfunctional kids in this town and a lot of them hardly see their parents. That connection with your husband and your kids is so important."
Yolanda's efforts haven't gone to waste, as David added, "She creates the most wonderful home. I love coming home to her. I love going to sleep with her and waking up next to her."
The television star also opened up about her debilitating battle with Lyme disease. "I travelled the world looking for a cure," she said. "I stayed in a clinic in Florida for two months. I did 30 days of hardcore detox in Switzerland, where I wasn't even allowed to use shampoo or lotion.
"After all this, I still didn't see much improvement. I haven't driven my car for 18 months. It's a disease that you can't see from the outside, so people think you're okay, but it's a devastating condition. It brought me to my knees."
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The new series of The Real Housewives of Beverly Hills continues every Tuesday at 9pm only on
Lifetime (Sky 156 & Virgin 242).