We wanted to make the house feel like their house. In the first movie, the house was so formal. The entryway almost looks like a mausoleum. There isn’t even a sofa in the front room. In our film, Michael Banks has grown up to be an incredibly loving father, and the fingerprints of the children are all over the house. We brought in softer colors, woodwork that hadn’t been painted white, and Michael’s artwork. On the exterior, we scaled the houses down a bit and added brick to make them feel less formal. We were inspired by P.L. Travers’ house, which was all brick.
Source: latimes.com – Los Angeles Times