Creating a 501(3)(c) or some other type of nonprofit entity. It could be argued that a “Permaculture” nonprofit would fall under “Advances religion, education, or science” as the putative qualifying reason for gaining tax exempt status. Other types are “Social welfare organizations: 501(c)(4) status” and “Other tax-exempt organizations: 501(a) status” (501(a) status includes farm coops). it is important to remember that as a 501(3)(c), “your organization cannot benefit private interests,
use its income to benefit yourself or private shareholders, or violate public policy.”
The first step is to create a well vetted business plan that lays out the who, what, when, where and how of it all, and of course the why. Basically laid out on paper justifying your nonprofit entity. Will the charity own the land it uses or will it rent the land. How many employees will it have. What assets will the nonprofit hold initially? Will it exist as a Public charity or private foundation? Is the 30 acres currently receiving an ag exemption for property taxes?
If the 30 acres becomes an asset of the nonprofit and the nonprofit goes out of business there are rules that the land be sold to another charity, or fines can result.
This article lays out fairly clearly the benefits and drawbacks of creating a 501(3)(c).