This document outlines the requirements for commercial development projects in unincorporated areas of Travis County, Texas. Applicants must submit a site plan showing existing and proposed structures, driveways, parking areas, and contours. Engineered drainage and detention plans are required if the project increases impervious coverage. A septic permit or driveway permit may also be needed. The review period is 21 days and fees are $45 plus $1.35 per $1,000 of construction costs. Plans for commercial buildings require additional fire marshal review and inspection.