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Additional background on the ORSC and OSSC On April 1, 2021, the 2021 ORSC took effect. A significant portion of the overall adoption process was to update,align,and streamline the administrative provisions within Chapter 1. This was done in parallel with an interim amendment update to Chapter 1 of the 2019 OSSC. Since 2018,the division has been making an effort to appropriately adjust the Chapter 1 provisions of both codes for our state to accurately reflect delegable authority, address inconsistencies in the state building code,and effectively communicate division policy under ORS 455 for our customers, stakeholders and local government partners acting under our authority. As a result of this effort,the Oregon requirements for non-residential uses align more closely with national model building codes, and with the national standard of care. Introducing a business, care facility, or other non-residential use to an otherwise residential setting increases fire-life safety risk. The national model code (International Residential Code)requires automatic fire sprinkler systems in all residential applications,while Oregon requires them only in limited applications. Because these non-residential use facilities are at higher risk, they were particularly below the national standard of care, which prompted the change in their treatment in Chapter I of the OSSC and ORSC. In Oregon,the ORSC governs residential uses of detached one-and two-family dwellings,townhouses,and their accessory structures. As defined, live/work units are also permitted to follow the construction standards of the ORSC where they meet the applicable provisions of the OSSC;including an automatic fire sprinkler system and accessibility. Other non-residential uses, including businesses and care facilities, must be appropriately classified and constructed in accordance with OSSC.Where these new uses are proposed in an existing dwelling, [. a change of use process must be initiated by contacting the local building department. fir' Licensure associated with non-residential uses may specify that certain licensed activities are permitted to occur within detached one-and two-family dwellings and townhouses.Particularly for child care facilities and adult foster care facilities, licensure establishes; acceptable business locations, land use or zoning allowances, maximum numbers of individuals receiving care, and similar licensing parameters. In Section R101.2, the 2021 ORSC recognizes these two unique business uses located within detached dwellings, and specifies the appropriate construction standard path of the OSSC,while ensuring flexibility in the designby assigning a Group R-3 occupancy classification. R-3 is the standard classification generally reserved for residential-only use, and covers one-and two-family dwellings. Under the previous ORSC scope, and multiple iterations prior, these facilities were directly governed without additional safeguards. Under the 2021 ORSC, those non-residential uses associated with typical detached one- and two-family dwellings and townhouses are now addressed by the standards of the OSSC. Under the OSSC, and the assigned Group R-3 classification,these facilities are still permitted to be constructed using prescriptive conventional light-frame construction provisions, but now have the added safety requirement of an automatic residential fire sprinkler system. Specification of this safeguard for these new child care and adult foster care facilities located in dwellings is outlined in the Governor's January 2020 Child Care Workgroup summary report,available at: Oregon.gov/Gov/admin/regional-solutions. L Page 2 of 2