OAR 918-674-0590: Temporary rule language in effect until 12/27/2026. Plan Requirements

(1) General plan requirements. (a) Plans for prefabricated buildings intended to receive an Oregon insignia of compliance must comply with the requirements established in these rules. (b) Manufacturers must obtain division-approved plans prior to construction of any prefabricated building required to have Oregon insignia of compliance. (c) Plans must meet or exceed the applicable requirements in Oregon laws, administrative rules, and must comply with minimum requirements in Oregon adopted specialty codes for the building’s occupancy classification and intended use. (2) Plan review application. (a) Plans must be submitted with a completed division-approved application form along with applicable fees required in OAR 918-674-0730. (b) Plans must include, but are not limited to, applicable requirements for structural and architectural designs, engineering calculations, specifications, electrical designs, plumbing designs, mechanical designs, and other data necessary to demonstrate compliance with division requirements. (c) Plans for prefabricated buildings are required to be stamped by an Oregon registered design professional or other Oregon licensed person as established in applicable Oregon laws and the division. This applies to all code disciplines (structural, mechanical, electrical, and plumbing). (d) Submission of plan review applications and plans must be as established by the division. (3) Prefabricated building types and design criteria. (a) A plan design may be for the construction of one prefabricated building, or the design may be used for the construction of multiple buildings. It is the manufacturer’s responsibility to ensure that plan designs meet or exceed design criteria for the geographical area where the prefabricated building is intended to be located regardless of whether the design is for one building or for multiple buildings. (b) The manufacturer must determine if the design is for a prefabricated permanent building or for a prefabricated relocatable building. See definitions in OAR 918-674-0510. (c) A site plan must be included where the installation location in Oregon is known at the time of plan submittal. The site plan must show the location of the prefabricated building in relation to other buildings on the same property, property lines, and any exit ways. (4) Design options. (a) Design options to a base plan are allowed. See definition of design option in OAR 918-674-0510. (b) A maximum of six design options is allowed for each base plan. A design option may not change the base plan in any of the following ways: (A) Change a building’s occupancy classification or use; (B) Change the square footage to the building either horizontally or vertically; (C) Change the configuration of building sections for multi-section buildings; or (D) Change the approved engineering of the base plan. (c) Design options must be submitted using a division-approved application form along with fees as specified in OAR 918-674-0730. Design options may be submitted at the same time as a base plan submittal or may be submitted later. A design option may not be included on the same plan review application as the base plan review application; it must be submitted separately. (d) Plans for a design option must be prepared according to the same requirements as a base plan. Plans for a design option need only be for the specific variation to which the design option applies. Plans must clearly indicate the location, nature and extent of the work proposed. The plans must show in detail that they conform to the applicable provisions of Oregon adopted specialty codes. (e) Design options are specific variations to a single base plan. A design option may not be submitted to an existing approved design option. (5) Incomplete structure. (a) The division’s policy is that prefabricated buildings must be substantially completed by the manufacturer at the manufacturing facility with minimal elements to be completed at the building site. The division may allow certain factory construction to be completed and inspected at the building site. Plans for a prefabricated building intending to have factory construction completed at the building site must be identified as an “incomplete structure” as defined in OAR 918-674-0510. (b) The procedure to communicate construction elements intended to be completed at the building site may only be those items listed on a division-approved Notice to Local Enforcement Agency form. This form contains typical elements intended for a local building department to inspect. The division may allow additional construction items to be included on a Notice to Local Enforcement Agency, provided that the manufacturer provides reasonable justification and need for the construction to be completed at the building site. These additional elements may only be inspected by the division. The division reserves the right to deny any additional construction elements submitted on a Notice to Local Enforcement Agency form that exceeds reasonable division limitations or is outside the scope of the division’s authority. (c) A Notice to Local Enforcement Agency form must be submitted with the base plan submittal package along with the fee required in OAR 918-674-0730. The Notice to Local Enforcement Agency form may not be altered or modified by the applicant and may not contain any of the site inspection items identified in OAR 918-674-00540. A division approved form altered or modified by the applicant will not be accepted. (d) A Notice to Local Enforcement Agency form submitted after plans have been approved by the division must be reviewed and approved by the division. Division approval is required prior to final inspection by the division where applicable, or prior to any final approval and issuance of a certificate of occupancy by a local building department. Manufacturers are responsible for providing a copy of division-approved plans identifying the work to be completed at the building site for each incomplete structure. (e) Incomplete structure designs may not include any construction interpreted by the division as “hybrid” construction. “Hybrid” construction includes, but is not limited to, a portion of a prefabricated building constructed at a manufacturing facility by the registered manufacturer and a portion of the same prefabricated building constructed at the building site by others that results in a completed building. (f) A copy of the division-approved Notice to Local Enforcement Agency form must be attached to the inside of the window closest to the entrance door or adjacent to the entry door prior to the prefabricated building leaving the manufacturing facility. (g) Registered manufacturers and owners of Oregon-approved prefabricated buildings may not engage in activities that involve reconfiguring an Oregon-approved prefabricated building or building sections from multi-section prefabricated buildings based solely on the fact that the prefabricated building or building sections have an Oregon insignia of compliance affixed to the building or building sections. These activities, when performed on an Oregon-approved prefabricated building, are considered an alteration to an Oregon-approved prefabricated building and may result in Oregon insignia of compliance being removed from these buildings. (6) Plan review. (a) Plan submittals accepted by the division are reviewed for compliance with applicable Oregon laws, Oregon adopted specialty codes, and these rules. (b) If the division determines additional information is required, a request for additional information will be provided to the applicant. It is the responsibility of the applicant to respond to each issue listed on a request for additional information. (c) Corrected plans and other associated documents must be submitted to the division with a cover letter explaining the changes. Changes on the plan pages must be clearly identified. (d) Subsequent review of a plan following receipt of requested information may require another request for additional information. (e) A plan application will be deemed to have been abandoned by the applicant after 180 days following the last official request for additional information to the applicant by the division, unless action by the applicant has been pursued in good faith or the plan application has been approved. The building official charged with administration of the division’s prefabricated structures program may authorize or grant one or more extensions of time for additional periods not exceeding 90 days each. The extension must be requested in writing and justifiable cause demonstrated. (7) Plan approval. (a) If the division finds that the plans conform to the requirements of these rules and that applicable fees have been paid, the plans and associated construction documents must be approved in writing or by stamp, as “Reviewed for Code Compliance” or “Approved.” (b) Approved plans will also include a division-issued Notice of Plan Review document. The Notice of Plan Review document is part of the approved plans and must be available for the purposes of completing required inspections either at the manufacturing facility or at the building site. (c) One set of approved plans is retained by the division, and one set of approved plans is returned to the applicant. The applicant’s set of plans must be kept at the place of manufacture and must be made available during inspection. (8) Records required. The manufacturer must maintain a permanent record of construction documents, by serial number, of all units manufactured. The division retains approved plans according to the division’s records retention policy. (9) If a manufacturer fails to renew its registration with the division, all division approvals of plans and manuals and unused insignia become invalid. (10) In addition to the plans described in this rule, the division may, when deemed necessary, require the manufacturer of prefabricated components and prefabricated component buildings to submit an installation manual or installation instructions for division approval. [Publications: Publications referenced are available from the agency.]