37 Development and construction of commercial, hotel, condominium and residential real estate properties; Building construction; installation services in the field of commercial, hotel, condominium and residential real estate properties, namely, installation of air conditioning, heating, electrical, ventilation, plumbing equipment and fixtures, computer hardware equipment; installation services in the field of renewable energy, namely, installation of renewable power equipment and fixtures; repair of commercial, hotel, condominium and residential real estate properties