What This Statute Says
A.R.S. § 42-11115 exempts property held to preserve or protect scientific resources, such as archaeological sites, rare habitats, or research preserves. The use must be substantial and ongoing.
Property that is held by a charitable organization, recognized under section 501(c)(3) of the internal revenue code, to preserve and protect scientific, biological, geological, paleontological, natural or archaeological resources is exempt from taxation.
A.R.S. § 42-11115Arizona is unusually rich in scientific resources, archaeological sites, dark sky preserves, paleontology, native flora. This statute supports private organizations that hold land specifically to protect those resources.
For estate plans that include a conservation easement or a charitable contribution of ecologically sensitive land, this statute is one of the back-end protections that keeps the recipient organization's holding costs low.
When This Statute Comes Into Play
This statute typically becomes relevant in three situations. A property owner is reviewing an annual tax bill. An estate is being administered and the personal representative has to address ongoing property tax obligations. Or a charitable or nonprofit organization is claiming or maintaining an exemption. The statute is part of a larger framework in chapter 11 of title 42 and operates alongside the related sections cross-linked below.
What This Means for Arizona Families
Most families never think about Arizona property tax statutes until they are sitting at a closing table on an inherited home, reviewing an unexpected tax bill, or trying to claim an exemption for a surviving spouse. When that moment arrives, the rules in chapter 11 of title 42 are the framework you are working inside.
If you are holding real property in a revocable living trust, the trust structure does not by itself remove the property from the tax rolls. The exemption has to come from a specific statute. Our FAQ on what to do with property you inherit in Arizona covers the immediate practical questions, and our FAQ on probate timelines covers how a contested or stalled administration can affect tax filings and exemptions.
If you are administering an estate, the personal representative has a duty to keep property taxes current, to claim available exemptions where appropriate, and to maintain documentation in case the assessor reviews a claim later. Calendar the February exemption filing window each year for any property where a widow, widower, or disability exemption applies. Once the deadline passes, the saving for that year is usually lost.