This urban project in downtown Santa Barbara, CA, takes to heart architect Ed Mazrias 2030 Challenge goal of carbon neutrality. Built in two phases, and certified LEED-H platinum, it began with the teardown of an 1887 Victorian house, and its replacement with a state-of-the-art 2,520 sq. ft. home. The new structure captures some of the essence of the original home, but is extremely airtight and well built. The combination of spray foam and external Tyvek Thermawrap reduces air infiltration (ACH 50) to .96 (better than the most stringent LEED standards).
The second phase called for construction of a 5,100-sq. ft. three-unit condominium, designed in a Spanish style. This built, built using the same framing and insulation materials as the single-family home, also achieves super energy efficiency. The team had intended to build both structures with SIPs, but seismic concerns resulted in a change to 2x6 framing with spray foam and thermal wrap.
The addition of parking lifts not only allowed for more vehicles—it conserved valuable square footage for living, so that architect was able to squeeze an additional living unit out of the plan. Less driveway also made possible a community garden.
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