The IBC special inspection program is not optional on most commercial construction projects. Engineers must prepare a Statement of Special Inspections before the permit issues. Contractors must ensure inspections are performed and logged. Building departments will not issue a certificate of occupancy without a completed special inspection record. This guide explains what engineers put in the schedule, what triggers each inspection type, and how to document compliance.
What does the IBC require for a special inspection schedule?
IBC Section 1705 requires the registered design professional in responsible charge to prepare a Statement of Special Inspections identifying all work requiring special inspection, the inspection type (continuous or periodic), inspector qualifications required, and the approved agency performing the inspections. The schedule must be submitted and approved before work begins. Without an approved special inspection program on file, the building official may withhold the certificate of occupancy.
IBC Section 1704.2 defines the minimum content of the Statement of Special Inspections (SSI). The SSI is prepared by the registered design professional (structural engineer of record or architect) and submitted to the building department with the permit application. The SSI must identify:
| SSI Element | IBC Requirement | Common Engineer Specification |
|---|---|---|
| Work requiring inspection | List all items from IBC Table 1705 | Concrete, high-strength bolts, welding, masonry, fill, anchors, piles |
| Inspection type | Designate continuous or periodic for each item | Continuous for structural welding; periodic for compacted fill and anchor bolts |
| Inspector qualifications | ICC certification or approved agency credential | ACI concrete field testing technician; AWS CWI for welding; ICC special inspector |
| Approved agency | Name of testing and inspection firm | Third-party inspection agency retained by owner; not the contractor |
| Final report schedule | Identified in SSI; required before CO | Submitted within 30 days of substantial completion |
IBC Table 1705 lists the specific work types that trigger special inspection requirements. Engineers typically incorporate this table directly into the SSI with checkboxes or annotations indicating which items apply to the project. The most commonly inspected items on commercial projects are:
The distinction between continuous and periodic inspection matters for scheduling, cost, and liability. Engineers specify inspection type based on the risk level of the work and the ability to detect deficiencies after the fact.
| Inspection Type | Definition | Typical Work Items |
|---|---|---|
| Continuous | Inspector present for the duration of the work activity | Structural welding (full-pen), concrete placement in structural members, driven pile installation, drilled shaft concrete |
| Periodic | Inspector present at defined intervals or for spot checks; not present for all work | Compacted fill (each lift), high-strength bolting, masonry block courses, post-installed anchor spot checks |
When engineers specify periodic inspection, the SSI must define the inspection frequency — for example, "periodic inspection of each lift of compacted fill at minimum one test per 2,500 square feet" or "periodic inspection of high-strength bolting — minimum 10% of bolts per connection." Leaving frequency undefined creates ambiguity about whether the inspection program was satisfied.
IBC Section 1704.2.4 requires the special inspector to furnish inspection reports to the owner, the registered design professional, the contractor, and the building official. The inspection record must include:
Deficiencies must be reported to the building official in writing when they are not corrected promptly. The IBC prohibits proceeding with work that has outstanding uncorrected deficiencies unless the building official grants written authorization.
IBC Section 1704.2.5 requires the approved agency to submit a final report to the building official that documents all inspections performed, all deficiencies noted, and certifies that all inspected work conforms to the approved construction documents. The building official may withhold the certificate of occupancy until the final report is received and any outstanding deficiencies are resolved.
Contractors who fail to coordinate inspection scheduling with the approved agency create the most common certificate of occupancy delay: work performed without required inspections that must now be documented through alternative means or physical investigation. When work has already been covered or concealed, the remediation cost is substantially higher than the cost of the original inspection.
Sitemark's inspection tracking allows project teams to log special inspection events against specific work areas, attach inspection reports, and track outstanding items through resolution — creating a complete record for the final report and CO package.
Log inspection events, attach reports, track deficiencies, and generate the final package for certificate of occupancy — all in one place. Start before the first pour.
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