When Brett Masterson first became acquainted with the creative professional next door, he hardly could have imagined that their neighborly friendship would turn into a steadfast creative collaboration. “She was looking for someone to design her new one-bedroom nest, after having traded in her two-bedroom apartment in the same co-op,” says the architect, who helms Brooklyn-based Masterson Architecture & Interiors. As a recently divorced mother of a seven-year-old girl, and as someone who had lived in Brooklyn for over 17 years, the homeowner knew her priorities. “I was keen on carving out two separate bedrooms so that my daughter and I would each have our own space. Also, because I was starting a new chapter in my life, I wanted the space to very much feel like a reflection of me, my interests, and my personal style,” she shares.