Trust Ace Modular Structures to help you design and create modular buildings that are tailored to meet your unique needs. Since 1995, we have specialized in offering commercial modular buildings for sale and lease, and that extensive experience sets us apart from our competitors. In business for more than 20 years, we're proud to offer top-quality solutions when it comes to any prefabricated buildings for office, school, or other uses. From simple classrooms and office trailers to elaborate modular office buildings, our team has done it all.