Our portfolio showcases a selection of custom homes we’ve built throughout Napa and the Sonoma County, including fully customized prefabricated designs and architect‑driven projects. Each home reflects our commitment to craftsmanship, precision, and the personalized approach that defines Mario Custom Builder Inc.
Sonoma Prefabricated Home
Napa Valley Custom Barn
Calistoga Custom Farmhouse
Napa Valley Custom Residence
Napa Valley Custom Guest House
Napa Valley Chapel
Downtown Napa ADU
Home Addition
Outdoor Kitchen
