WFR stands for wall-to-floor ratio. It is a key metric used by estimators and architects to gauge the cost-efficiency and thermal performance of a building design. A lower ratio means less exterior envelope per square foot of usable space, which generally translates to lower material costs and better energy efficiency.
Heard on the job
The client wants to add more corners and bump-outs, but that will drive up the WFR and blow the framing budget.