2.2 Inspection Process and Certificate of Occupancy

Inspection Process and Certificate of Occupancy

The Administrative Basis of Code Inspections

The issuance of a building permit is a conditional license to build; it does not grant the builder authorization to cover or complete the work without administrative oversight. Under IBC Section 110.1, all work for which a permit is required is subject to inspection by the building official, and such work must remain accessible and exposed for inspection purposes until approved.

The code places the legal burden of notification directly on the permit holder. Under IBC Section 110.5, it is the duty of the permit holder (or their authorized agent) to notify the building official when work is ready for inspection, and to provide safe access and the necessary means for the inspection to be conducted. If work is covered before it is inspected and approved, the building official has the legal authority to order the work to be uncovered at the permit holder's expense.

Progressive Construction Inspections

To verify compliance at critical stages of construction, the building code mandates a series of progressive inspections. These inspections must occur in a specific sequence, and work cannot proceed past each stage until approval is granted:

1. Footing and Foundation Inspection: Made after excavations are complete and reinforcing steel is in place, but before concrete is poured (IBC Section 110.3.1). The inspector verifies trench depth, soil bearing capacity, setbacks from property lines, and reinforcing steel sizing and placement.
2. Concrete Slab and Under-Floor Inspection: Made after under-floor reinforcing steel, vapor retarders, and plumbing/electrical conduits are installed, but prior to placing concrete or sheathing (IBC Section 110.3.2).
3. Framing Inspection: This is the most comprehensive rough-in inspection. It is performed after the roof deck, sheathing, all framing, fireblocking, draftstopping, and bracing are in place (IBC Section 110.3.4). Crucially, framing approval cannot be granted until all rough-in electrical, plumbing, mechanical, and chimney/vent components are completed and have received their respective rough-in approvals.
4. Lath, Gypsum Board, and Gypsum Veneer Inspection: Done after interior and exterior lathing and gypsum board are attached, but prior to the application of plaster or finishing compound (IBC Section 110.3.5). This inspection verifies fastener spacing and penetration, which are vital for shear wall capacity and fire-resistance ratings.
5. Fire- and Smoke-Resistant Penetrations: Conducted where fire-resistance-rated assemblies are required. The inspector verifies the installation of fireblocking, draftstopping, and the integrity of penetrations through fire barriers, fire partitions, and smoke barriers (IBC Section 110.3.6).
6. Energy Efficiency Inspections: Verifies insulation R-values, fenestration U-factors, duct and envelope sealing, and HVAC equipment sizing and controls to ensure compliance with the energy code (IBC Section 110.3.7).
7. Special Inspections and Structural Observations: For high-risk or complex structures (e.g., structural steel, high-strength concrete, masonry, soils, and wind/seismic resistance), IBC Chapter 17 mandates Special Inspections. These are conducted by registered special inspectors approved by the building official, who operate independently of the contractor to provide continuous or periodic quality control. Structural observations are performed by the registered design professional to verify general compliance of the structural system.
8. Final Inspection: Conducted after all work authorized by the permit is completed, all electrical, plumbing, and mechanical final inspections are approved, and the site is ready for occupancy (IBC Section 110.3.10).

Rejections and Correction Notices

If an inspection reveals work that does not conform to the approved plans or the code, the inspector must issue a written correction notice or violation notice. The notice must specify the non-conforming items and the code sections violated. The contractor must correct the deficiencies and request a re-inspection. No subsequent work that conceals the non-conforming items may proceed until the correction has been inspected and approved. The building department must maintain permanent records of all inspection reports, approvals, correction notices, and re-inspections to ensure a complete compliance history.

The Certificate of Occupancy: Legal and Technical Requirements

The ultimate goal of the permit and inspection process is the issuance of a Certificate of Occupancy (C of O). Under IBC Section 111.1, no building or structure may be occupied, and no change in the existing use or occupancy classification of a building or structure may be made, until the building official has issued a Certificate of Occupancy. The C of O is a legal document certifying that the structure has been inspected and found to be in compliance with the building code and approved plans.

The document itself must contain specific legal and technical information, as mandated by IBC Section 111.2, including:

• The building permit number and the address of the structure.
• The name and address of the owner or owner’s authorized agent.
• A description of that portion of the structure for which the certificate is issued.
• A statement that the described portion of the structure has been inspected for compliance with the requirements of the code.
• The name of the building official and the edition of the code under which the permit was issued.
• The group and occupancy classification and the type of construction.
• The design occupant load of the building or portion thereof.
• Any special stipulations or conditions of the building permit.

Temporary Certificates and Revocation

In many commercial projects, an owner may wish to occupy a portion of a building before the entire project is completed. Under IBC Section 111.3, the building official is authorized to issue a Temporary Certificate of Occupancy (TCO) provided that the portions of the building can be occupied safely. The building official will set a time limit for the validity of the TCO and may require temporary safety measures. Under IBC Section 111.4, the building official has the authority to suspend or revoke a Certificate of Occupancy or a Temporary Certificate of Occupancy if the certificate was issued in error, on the basis of incorrect information, or when the building is in violation of code provisions.