Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
In ResStock 2025 Release 1's BuildExistingModel measure you could try setting the whole_sfa_or_mf_building_sim variable to true, and then running run_analysis.rb as usual. The resulting home.xml HPXML file located in the run folder should contain multiple Building elements, each representing 1 or more dwelling units (as described in the OpenStudio-HPXML documentation), for SFA/MF building type samples. Keep in mind, however, that this feature is not yet part of ResStock's normal production or testing workflow (i.e., whole_sfa_mf_building_sim is currently hardcoded to false); it should be considered placeholder code that may be used to support future ResStock development.
Note that the resulting HPXML file will contain identical dwelling units, except for the generated stochastic schedules that vary across the modeled units. For inter-unit heat transfer, we'd need to know how units are situated adjacent to each other (e.g., units to the side(s), above, below, etc). However, currently every unit would use the same setpoints, so in general there would not be very much inter-unit heat transfer, with the possible exception of buildings without cooling.
