Mary, a 37-year-old Shelburne resident, had always imagined herself living in a small cabin. She started saving in high school, and, by 2015, she'd banked $30,000 to buy one. But Mary's work — as a home caregiver — made her wary of taking on a mortgage. She was determined to find a house that cost no more than $30,000. Impossible, right? Yet, in early 2016, Mary got a call about a tiny house being designed at Norwich University in Northfield, home to Vermont's only nationally accredited architecture program. Professor Tolya Stonorov and her yearlong design-build class were building an energy-efficient, 324-square-foot home they called CASA 802 (for Creating Affordable Sustainable Architecture). They would need a buyer at the end of the semester. Given the free labor, donated materials and a hefty grant, the $60,000 house could be sold for $30,000. Mary purchased the home and, in November, had it moved to its current location. (For privacy, she asked Nest not to reveal her real name or address.) The expenses of transportation, crane, foundation, crawl space and utilities hookup set her back another $13,000. Though CASA 802 is small compared with the park's 25 mobile homes and four VerMods — Vermont-made modular homes — its minimalist-industrial look makes it stand out. In December, it won the People's Choice Award from the Vermont chapter of the American Institute of Architects. CASA 802 is a one-off. By this May, however, house hunters on extreme budgets like Mary's will have a similar — if even smaller — option to consider. A second iteration of the Norwich tiny house, designed and built by Stonorov's colleague Matt Lutz and his students and called SuCASA (for Single-Unit CASA), will be complete by the end of the current semester. And this one is going to cost less than $30,000. That's a remarkable sticker price, considering that the 288-square-foot SuCASA will be built with nearly all locally sourced, sawn and produced materials. Fontaine Millwork & Forestry, a family-run sawmill in East Montpelier, will provide many of those. Mill owner Marc Fontaine and Montpelier investor Don Rowan have a memorandum of understanding with the university to buy the prototype on completion. Fontaine says he will begin turning out the prefab homes on demand in June. The price is also notable because a single-wide mobile home averages $40,000. Intended as an alternative to mobile homes, SuCASA will be the…