Check the reviewed permit path.

Chicago

Permit check for insulation or air-sealing work tied to interior alteration or trade scope

Chicago's building permit instructions say a building permit is required before most construction, demolition, and repair work. For insulation or air-sealing work, the closest official Express Permit path depends on the scope: nonstructural interior alteration may cover limited interior alteration work and requires energy and water efficiency compliance documentation, while related electrical, mechanical, plumbing, exterior, or roofing work should use the matching Chicago worktype or plan-based review path.