The foundation and site prep, finish, electric and HVAC should be provided locally and are not included in the Lindal kit. Lindal provides design services including fully engineered construction plans, the entire weather-tight shell (architectural-grade posts and beams, premium framing materials, connectors, fasteners, siding, windows, doors, and trim), a vast list of options and material upgrades including high-quality finish wood trims, interior doors, stairs, and wall/ceiling liners, customer support, and a Lifetime Structural Warranty.