I’ve been spending time in Baltimore with my three nephews ages 5, 3½, and 1½. Although I visit here and there, I always face a bit of a learning curve when I’m in town. My brother’s house is the complete opposite of my minimalist approach. I’m finally proficient with the baby gate at the top of the stairs and getting them buckled into car seats. According to Lending Tree, it costs $297,674 to rai...