Judy Greer bought her 1,700-square-foot home in the Larchmont Village neighborhood of Los Angeles 15 years ago with her first paycheck from 13 Going on 30. The noted character actor, who is currently starring alongside Jamie Lee Curtis in the fall blockbuster Halloween, recently took a sledgehammer to her home to add a bedroom and bathroom.

Greer, 43, has been working with fullBRANCH architectural firm and ING Construction on the renovation, which will feature glass doors that add light and space to her modern yet surprisingly inviting home. Interestingly, the actor, who has been married to producer Dean E. Johnsen, 50, for seven years, will soon be living with her husband for the first time. Greer and Johnsen have kept separate homes so that the producer could be close to his two children in Oaks, California, which is 40 miles from LA.

“Our married life is a little weird,” she told PEOPLE in September. “He had his house and I had mine. We spent our nights together back and forth.” The couple has decided now that the children are of age to finally live under the same roof. Part of the motivation behind the renovation is not only to make the home more spacious for the couple but also to welcome her husband’s children.

“I have to be able to take a nap everywhere in my house,” she tells AD, adding that she did not want “that fancy living room that no one was allowed to go in.”

At first, Greer contemplated undertaking the renovation on her own, though despite knowing her taste, she didn’t feel that she was up to the task. “I’m frugal and Midwestern and hiring an interior designer seemed like something I would never do,” the actor says. “But I’m not good at decorating. I know what I like, but I don’t know how to put it all together.”

Together with Scott Mangan, the owner of Rubbish Interiors, a Los Angeles interior design firm and showroom, Greer was able to integrate her own style into the overall design. The pair refurbished items such as a 1920s rug and a chandelier in her living room and added new pieces like a sofa from local furniture store Lawson Fenning and a J. Robert Scott lacquered grasscloth table.

“I love recycling, and I love the feeling and the vibe of old things and the idea that they’ve been through countless houses and seen so much,” Greer says. “I get sentimental about it.”

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Next up for Greer is Where'd You Go, Bernadette, a 2019 comedy-drama directed by Richard Linklater that stars Cate Blanchett, Billy Crudup, Emma Nelson, Kristen Wiig and Laurence Fishburne, and Let's Go Luna!, an animated series created by Joe Murray, in which Greer will provide the voice of the Luna. The series will debut on November 21, 2018, on PBS Kids and Disney Channel UK.