Built using "High Performance insulating concrete form, which provides: 1. Energy Efficiency, R-23 or more. NO air leakage. HIgh mass walls; 2. Sound retention equals commercial "privacy walls"STC 53 or more. 3. Wind Resistance up to 200 miles deadly winds and debris. 4. Fire Retardant is preferred for "firewalls." It has a typical 2-hour fire retardant on concrete. 5. Mold Resistance. High-impact windows and doors. Spray-foam under the roof for better insulation. Peel end stick sheet under the shingles. Dimensional shingle, which gives you a long-term manufacturing guarantee. Underground connection to the power grid to avoid hurricanes or strong winds damages. Moen faucets are used everywhere in the house—High-efficiency Rheem water heater. The garage has concrete walls.No HOA. On Supra.