Helping her mom age in place has pushed Aston to put her Certified Aging-in-Place Specialist training to good use. "The universal design modifications I've made in my mom's home enlightened me to the changing needs of clients," she says.Design tip from Mom: When it comes to universal design, expanding the doorway is most important. Aston says that for those moving in and out of a space with a walker, you "must have clearance for your device," as shown here and in the previous photo. She adds that when designing or remodeling a bathroom from scratch, oversize it for future use; grab bars can be easily added as necessary, and the extra space makes the bathroom feel luxurious.Related: Bathroom Safety Features That Support Your Style