ESB Design+Build is an experienced Arizona general contractor and prefab builder, offering custom modular buildings constructed in a fraction of the time and cost of conventional construction. With a unique process thatincludes slab-on-grade, floorless steel-frame modular buildings, we provide a cohesive experience for our clients and their building committees. Our team employs all construction trades and is fully licensed, insured, and bondable to perform all construction services.