Accessory Structures in Sangamon County, IL (2026)

1 county-level rule, plus city-specific rules for 1 city in Sangamon County, Illinois.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Sangamon County. If you live within an incorporated city, that city's own rules apply — see the city list below.

ADU Rules

Illinois has no statewide ADU mandate. Sangamon County regulates accessory uses through Title 17 (Zoning Ordinance, adopted 1969) under 55 ILCS 5/Division 5-12. Springfield separately regulates ADUs under home rule through Code of Ordinances Chapter 155 (Zoning).

ADU Rules in Sangamon County, Illinois

Some Restrictions

Full ordinance details →Official source ↗

Accessory Structures by City in Sangamon County

1 cities in Sangamon County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.

Springfield

9 verified rules • ADU Impact Fees, ADU Owner Occupancy

All Sangamon County ordinances

See every category we cover for Sangamon County — parking, noise, fences, fires, animals, pools, and more.

Sangamon County Ordinance Hub →