An adjustable scaffold base for straddling ground level obstructions, such as church pews and other fixed, ground level structures, and supporting an upwardly-extending scaffold tower thereon. The scaffold base incorporates four legs and four elevated, height-adjustable cross beams that allow a scaffold tower to be erected above the height of many fixed, ground level structures. The erected base and tower thereby allow workers to access elevated areas within high-ceilinged buildings, such for performing ceiling repairs, painting, and changing light bulbs.