Alliance Green Builders in Encinitas's Old Encinitas district holds CSLB License #732912 and specializes in LEED, GreenPoint Rated, and Passive House-certified custom home construction. New-build interiors move from structural completion to finish selection with design consultants such as JY Design Interiors, who coordinate material palettes within the same North County market. Founded in 2013 as a division of Wave Crest Enterprises, the firm applies building-science principles — advanced air sealing, continuous insulation, and energy-recovery ventilation — to both ground-up residences and whole-house remodels. Site work on completed builds transitions to hardscape and planting plans through landscape contractors like Bradley Landscape Development for drought-tolerant Encinitas properties. Highest-performance projects include blower-door-tested envelopes achieving sub-1.0 ACH50 infiltration rates under Passive House Institute standards.