Sandario Rd. Frontage Lot Zoned CB-1. Picture Rocks Commercial District Prime Location on Main Road to Sonoran National Park and Sonoran Desert Museum. High visibility and great access to the property! A development plan, previously approved by Pima County as part of a larger project, envisioned this property as a single story 9800 square foot commercial retail or professional office space. A copy of the previously approved development plan is attached under the Documents tab. The drainage, environmental, and cultural impact reports submitted to support the prior development plan are also available.