Trace a building's outline, or confirm the footprint the app already found, then lay out rooms, doors, stairs, and furniture floor by floor, basement included.
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What this does not do
the plan is what a person drew or what a public footprint dataset offered — it is not a surveyed drawing and must not be treated as one. (Corrected 2026-09-10: interior doors and windows DO carry from a scene-editor building to the floor plan since Phase 221 / ATTACH-01; the earlier "do not yet carry" line was stale.)
Open the Floor Plan tab in the left panel. Once the floor you're on has an outline, Edit opens the floor-plan editor full-screen.
Start with the outline
A floor with no perimeter shows the outline gate first, in the panel itself. At a covered address, the app fetches the public building footprint and offers it for confirmation — click Use this outline to accept it, or Trace manually to draw your own on the aerial photo instead. Where there's no coverage, tracing manually is the only path.
The tool rail
Eight tools run across the top of the editor, one active at a time: Select to tap or drag anything you've placed; Room to drag out a room; Opening, which arms Door or Window with an In/Out/Slide swing for doors; Fixtures for furniture, appliances, and hazards — including stairs up, stairs down, and stairs both ways; Conditions to paint fire, smoke, water, or another condition on the plan; People to place a named crew member with a task; Markers for victim, hazard, and breach-point pins; and More, which holds Edit Perimeter and the blueprint underlay.
Rooms are free-form shapes
A room isn't locked to a rectangle — drag out whatever shape the space actually is. Switch to Select to move a room or drag a corner to resize it; the editor snaps corners and edges to nearby walls and other rooms as you drag, and holding Alt places the point exactly where you drop it instead.
Add floors, basement included
The floor strip across the top lists a tab for every story your building details declare, plus a basement tab where you've marked one, and stays in sync with any floor that already has a plan. Copy perimeter pulls another floor's outline onto the one you're on. Duplicate floor clones the whole floor — rooms, fixtures, and conditions — onto a new one, which is how you add a floor beyond what's declared.
Work over a blueprint
Open More → Blueprint underlay to upload a PDF, PNG, or JPG and trace right on top of it. Drag it into position, rotate and scale it to match your traced perimeter, and turn its opacity down so your own lines stay visible over it.
Zoom, pan, and undo
Zoom from the fit-to-screen floor up to 400% with the Zoom in and Zoom out controls, or tap Fit to reset; pinch to zoom on a tablet. Cmd/Ctrl+Z undoes the last thing you did on the active floor, and Cmd/Ctrl+Shift+Z redoes it — each undo step is one whole gesture, drawing a room or dragging a corner, never a single mouse-move, so undo takes back exactly what you meant it to.
Hoselines find the stairs
A hoseline you draw on the overhead map projects onto the matching spot on the floor plan automatically — there's no separate tracing to keep in sync. Bring a line within a few feet of a stairwell fixture and a Continue on Floor X button appears; tap it to switch floors and keep the same line advancing up or down.
The plan on the map, and saving
Once a floor has a perimeter, it drapes over the satellite map too, with an opacity slider in the bottom-left corner so you can see the imagery through it. Every change inside the editor saves on its own — watch the pill in the header cycle between Saving… and Saved ✓.