Founded by Morris Mayer in 2013 after he had already spent more than two decades in the drapery and upholstery trade, Plaza Park Interiors is a Mamaroneck workroom making custom window treatments and furniture while restoring upholstered pieces. Its 6,000-square-foot facility also supports custom cushions and fabric-aware interior cleaning, giving the company an unusual blend of fabrication and care for finished interiors.