New unvented roof system integrates closed-cell board continuous insulation over deck + cellulose insulation under deck (R-56 or better) + 2x6 exterior walls with R21 blown-in batts + insulated headers - highly insulated thermal envelope. Insulated and conditioned crawl space - area of floating floors are R-56 (blown-in cellulose). Pre-stained rustic-channel Western Red Cedar siding is long-lasting for low-maintenance and durability - natural, renewable materials + butterfly shed roofs are light-colored standing seam - resilient materials + minimize heat-island effect.