Get blueprints for an icehouse at Rofih.com, BackyardSpaces.com, MnSportsmans.com and WisconsinOutdoor.com. Alternatively, visit WebUrbanist.com for creative, out-of-the-box ideas for icehouses that range from an Orca ice shanty to cheap homeless shelters that work better as icehouses and a Wilcraft ATV that does double duty as a vehicle and ice-fishing shelter.
Both Rofih.com and BackyardSpaces.com have lists of sources for icehouse plans and blueprints. These sites provide detailed descriptions of each site in their lists, so it's easy to decide which matches a specific need. The lists include sites that sell full kits with a material list, drawings, a framing layout and complete instructions, as well as sites with basic do-it-yourself plans.
MnSportsmans.com is one of the sites on the Rofih.com list that sells both ready-made ice houses and do-it-yourself plans in various designs. In addition to complete house packages and wheel and frame packages, this site also sells building materials and other ice-fishing gear. A detailed guide to building an icehouse is also available, and no purchase is necessary to access this information.
WisconsinOutdoor.com has a free icehouse plan on its site. The drawings and instructions are detailed on the site with no purchase necessary, although the site also offers to print the drawings for the ice shack and send them to prospective builders for a minimal fee, as of 2015.