Dallas builder Mark Molthan of Platinum Series Custom Homes currently resides here. And “here” is a 20,000-square-foot spread on Northwest Highway, west of Inwood Road. Molthan packed every conceivable extra into the 7,646-square-foot house, including knock-out formals, study, den, media room, elevator, puppet theater, playhouse, and even a lit karaoke stage. Master his-and-hers closets include a home dry cleaning unit. The house has five bedrooms, six and a half bathrooms, a three-car garage, and quality finish-out, including a sophisticated AV system and a lagoon pool. Jennifer Miller, Dave Perry-Miller & Associates, an Ebby Halliday Company. 214-769-7448.