Walls By Room¶
Panel: Walls | Button: Walls By Room
Writes the room number of a room into a parameter on the walls bounding that room. Nothing is created or moved — this tool only sets parameter values on existing walls.
What it does¶
Lists every room in the model and asks you to select the rooms to process. List entries are shown as
number-name_phase_level.Asks you to select one parameter available on walls. This is the parameter that will receive the room number. Entries are shown as
parameter name (element id).Works out the boundary segments of each selected room and which wall forms each segment.
For every wall found, writes the number of the room it bounds by its longest shared boundary segment into the selected parameter.
A wall that bounds several rooms therefore ends up carrying the number of the room it shares the most boundary length with — one wall gets one room number, not a list.
When to use this¶
Use this when you need walls to know which room they belong to: for wall schedules and finishes take-offs, for filters or view templates driven by room number, or as a preparation step for downstream reporting that groups walls by room.
Requirements¶
The rooms must be placed and bounded so Revit can return boundary segments for them.
A writable text parameter on walls must exist before running — a project parameter or shared parameter bound to the Walls category. The tool only offers parameters it finds on walls; it does not create one for you.
Notes¶
Selection happens inside the tool. There is no need to pre-select anything in the model.
Progress is shown in a cancellable progress bar; results are printed to the pyRevit output window.
Re-running the tool overwrites any value previously written into the chosen parameter.
Because the assignment is by longest segment, a wall shared roughly equally between two rooms will be assigned to whichever room wins by a small margin. Review those cases if the result matters.
