Laura Moreno

DAWN ELIZABETH STUDIOS Just as he was about to close a sale, Colorado real-estate broker Marvin Martinez found himself coping with a crisis. A beauty crisis. His client, in her 20s, knew the broker would post a photo on the “Colorado First Time Home Buyer” Facebook page, which now has 85,000 followers. The problem: She needed fake eyelashes. And not just any fake eyelashes; a specific set she had at home. Mr. Martinez offered to make a tri p to Walgreens but was rebuffed. The client went home, changed her outfit, got her own fake lashes and about an hour later, emerged for the shoot, soon after signing the papers. “We just waited, that's all,” Mr. Martinez, 54 years old, said. “What else could we do?” As millennials buy homes in greater numbers, new wrinkles are emerging in an age-old process. Gone are the days of popping a champagne cork once the purchase and mortgage forms are signed. Today, more first-time buyers rush to share their newfound status as homeowner...