Schaumburg, IL Building Setbacks & Zoning: Lot Coverage Limits (2026)

The numbers live in Appendix B, the Zoning District Bulk and Setback Requirements table, and each district section of Chapter 154 repeats them. In the residence districts the maximum lot coverage is 10 percent in R-1, 20 percent in R-4, and 32 percent in each of R-6, R-6C and R-7. The district text measures coverage by "all principal and accessory buildings" on the zoning lot, so the house, the garage and every shed count against the same percentage. Section 154.158 (R-1) adds that nonresidential uses in that district may cover 25 percent of the lot, against 10 percent for residential uses.

The business districts run higher. Appendix B sets maximum lot coverage at 20 percent in B-1, 30 percent in B-2, 50 percent in B-3, 30 percent in B-4 and 50 percent in B-5. The B-3 and B-5 sections state that their total includes parking structures. The manufacturing districts, M-P and M-1, are both capped at 45 percent. Planned unit developments use their own measure: section 154.108 limits residential PUD building groundcover to 30 percent of the gross site, and the buildings, streets, patios, sidewalks, fire lanes and parking together cannot cover more than 55 percent of the land. Mixed-use PUDs are limited to 50 percent building groundcover and 80 percent for all impervious areas, and the village can approve a credit that raises the residential PUD figures when the project meets the general design standards and the comprehensive plan.

Separate from the lot-wide percentage, section 154.63(C) limits accessory structure coverage on single-family detached properties. Attached and detached accessory structures in the front yard together cannot cover more than 40 percent of the front yard, and the same 40 percent ceiling applies to the rear yard. Section 154.63(E)(4) then sets size caps for individual structures: a portable shed is limited to 25 square feet, a detached garage to 600 square feet or 40 percent of the rear yard (all accessory structures counted), whichever is less, and a gazebo, greenhouse, workshop or fixed shed to 200 square feet or 40 percent of the rear yard, whichever is less. Appendix B also carries a note that different setbacks apply to nonresidential uses in residence districts, which are covered in sections 154.155 through 154.162.