7 Colo. Code Regs. § 1101-7-5-3
For all building permit applications received by OPS on and after August 6, 2008, the affected Board shall hire and compensate third-party inspectors certified by OPS to perform inspections. A listing of certified third party inspectors will be posted on the OPS website. If the Board is unable to obtain a third-party inspector, an Appropriate Building Department that has been prequalified by OPS shall oversee the project. If the Board is unable to obtain a third-party inspector and no building department has been prequalified, OPS shall conduct or contract with a third party inspector to perform the required inspections, and the Board shall compensate OPS or the contracted third-party inspectors for all associated inspection costs.
Prior to commencement of construction on projects requiring third party inspections, the Board shall notify OPS of the designated third party inspector for the permitted project. The notification shall be made in writing using a form provided by OPS. OPS may request a preconstruction meeting with the Board, the contractor hired to perform the work, and the certified third party inspector.
7 CCR 1101-7-5-3