As a change of use, the building would need to be fully sprinklered, among other requirements.
This used to be a single-family house? Amazing, unless this is a major addition.
Each floor of the 3-story residential buildings has an occupant load of ten and I plan to classify it as R-3. My question is: would you consider that that the TOTAL occupant load of all three floors (30) would exclude an R-3 classification?
Each floor is served by a separate means of egress. The floor ceiling assemblies will be one-hour.
Wow, good question Chuck. In Everett, WA, we would allow you to do this for two floors, max out at 10 per floor for a total of 20 as two separated Congregate living facilities for each unit of the 'duplex', with separate entrances and exits, without sprinklers or accessibility per the WA State adopted amendments for the 2009 IRC.
It is limited to two stories in height, and less than 5000 square feet in area, per the WA state adopted definitions of a multi-family residential building in the 2009 IRC. Otherwise, it would be an R-1.
This interpretation would vary per jurisdiction, and certainly per state.