Mount Prospect, IL Building Safety: Building Inspections (2026)

The contractor, not the Village, starts every inspection. Section 21.215(A) lists the stages: when ready for footing to be poured, when the foundation is ready to be poured, before the foundation is backfilled and the drain tile is covered, when sewer or water installation is ready, when the stack is installed, when rough plumbing is installed, when electrical piping and wiring have been installed, when rough framing is completed, when insulation is installed, when ready to pour the basement floor, and when all work is completed and before the certificate of occupancy. Requests go in by telephone or on blanks supplied by the department (subsection B).

A related step comes early. Under § 21.213(B), immediately after the foundation and footings are installed, the permit holder must submit a spot survey bearing the certificate of an Illinois licensed land surveyor, showing the exact location of the foundation and footings against the lot lines and the elevations of the top of foundation. Construction work cannot proceed until the director approves it. The exception covers additions to existing single-family buildings where a survey was presented before the permit issued.

Inspectors have the right to enter. Under § 21.216, the director and authorized inspectors, on presenting proper identification, can enter any building, structure or premises, occupied, completed or under construction, at any reasonable hour when needed to perform a duty under the building code. Interfering with or hindering them is unlawful and is fined under appendix A, division III.

Stop orders back the schedule up. Under § 21.217, the director serves written notice of a violation and, if the work or condition continues, issues a stop order on all construction. The director can stop work without notice when public health and safety are endangered or when work began without permits. Stop order signs can be removed only by the director or the inspectors. A reinspection for the same deficiency, under § 21.317, is charged to the general contractor listed on the permit, at the fee in appendix A, division II. Under § 21.218, no building is occupied until a certificate of occupancy is granted under § 15.703.