Structure Height Limits: Dallas vs Richardson

Dallas Development Code Chapter 51A sets building height limits that vary by zoning district. Residential districts typically limit structures to 36 feet or 2.5 stories. The code measures height from grade to the highest point of the roof. Accessory dwelling units under 15 feet in the rear 30% of a lot get reduced setbacks; those 15 feet or taller must meet base zoning setbacks under Sec. 51A-4.510. Height variances require Board of Adjustment approval.

Richardson's Unified Development Code caps residential structure height at 30-35 feet in most single-family districts, with taller heights permitted in multifamily and commercial zones. Accessory structures are limited to lower heights, and airport proximity zones impose additional vertical restrictions.