The old shortcut: take the floor's square footage, multiply by 2.5 or 3, call it wall area. It's fast, and it's wrong in both directions — vaulted ceilings blow past it, open floor plans fall short of it, and either way your margin absorbs the error.
Measure the walls, not the floor
Scanstead extracts every wall as its own surface with a real length and height. Wall area isn't inferred from the floor — it's the sum of actual walls, minus actual openings:
- Doors and windows subtracted at their measured sizes, not a per-room allowance
- Tall and vaulted walls measured at their true height
- Per-room and whole-house totals, so you can price rooms à la carte
Ceilings and trim, same trip
The floor plan gives you ceiling area per room. The perimeter gives you baseboard and crown lengths. Door and window counts give you the trim-package number. One three-minute scan per room, and every line of the paint bid has a measured quantity behind it.
Why this wins bids
Painters who measure accurately can bid tighter without eating risk. When your competitor pads 15% "just in case" and you know the real number, you can come in lower and keep more margin. And when a client questions the price, "here's the measured wall area of your home" ends the conversation.
The tape measure was never the bottleneck. Climbing it up a two-story foyer wall was.