Free plans for small mountain cabins are available online at TodaysPlans.net, Mother Earth News, Jim Barry's Woodworkers Workshop.com, Renovation-Headquarters.com, and TinyHousePins.com. Small cabins have increased in popularity so many blogs, magazines and websites also have free plans that can be downloaded and printed.
Cabin plans can vary a lot in detail so it is important to find complete plans, not just sketches. Small house forums can also be a good place to discover plans that have worked well for others. Some free plans include materials lists that can be helpful to those building their own cabin. Some sites, including Renovation-Headquarters.com, warn that professional help is needed with structural design and construction.