A 18-1/2 x 30-1/2 ft wood frame barn with a gable roof and areas for cow stalls, a cow pen, a feed room and alley.
A 20 x 30 ft two-story barn with a gable roof and 10 ft wide lean-to along its length. Free downloadable plans at link.
Cross section, floor plan and detail drawings of a single-tier rabbit cage house for approximately 100 does and bucks. Capacity can be doubled or tripled by stacking cages.
A wide variety of rabbit and misc building plans, available from the University of North Dakota.