When planning a dairy cattle freestall housing system, focus on the cow and the freestall where you expect her to spend half her work day, resting and making milk. The size of the resting and lunge areas of the stall and the type and condition of the resting surface are critical. The quality (temperature, moisture, dust) and quantity (flow rate and velocity) of the air surrounding the cow must also be considered in the design, construction and maintenance of the freestall component of the overall dairy system. The cow must be able to freely access other housing areas throughout her work day. This includes the alleys that service the freestalls, water stations and feed lines, and also allow the cow to travel to and from the milking parlor and special-needs areas.