Springfield, IL has no published ADU impact fee schedule because it does not have a dedicated ADU ordinance. Where a second dwelling is approved via Special Use Permit, standard building permit fees, plan review fees, and utility connection charges apply. Illinois has no statewide cap equivalent to California's §65852.2(f) 750-sq-ft impact fee exemption.
Because Springfield does not have a stand-alone ADU ordinance in its Code of Ordinances, there is no dedicated ADU impact fee schedule. When a second dwelling is approved (typically by Special Use Permit through Chapter 155 of the Springfield Code), the standard fee structure applies: (a) building permit fees calculated on construction valuation per the Springfield fee schedule; (b) plan review fees; (c) any water and sewer connection charges from City Water, Light & Power (CWLP) for water/electric and the Springfield Sanitary District for sewer; (d) School District 186 impact fees if the city's developer-impact-fee framework applies to the parcel (Illinois cities may impose impact fees under 65 ILCS 5/11-12-3 and the Illinois Highway Code, with the framework varying widely). Illinois has no statewide statute exempting small ADUs from impact fees the way California Gov. Code §65852.2(f) exempts ADUs under 750 sq ft. Applicants should request a written fee estimate from the Office of Planning and Economic Development (217-789-2377) and the relevant utilities before submitting plans.
Failure to pay required fees blocks issuance of the building permit and Certificate of Occupancy. Constructing a second unit without paying fees is enforceable as a zoning violation under Chapter 155 with stop-work orders, administrative penalties, and inability to occupy or rent the unit.
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