Found it quicker than I thought--called a Deferred Charitable Gift Annuity
A deferred charitable gift annuity. Are you tired of the hassles of maintaining your property such as paying taxes, utilities and repair bills? Consider donating the property to WSU in exchange for reliable payments for life for you (and someone else, if you choose). When you arrange a charitable gift annuity, you receive a federal income tax charitable deduction in the year you set up the gift annuity when you itemize on your taxes. If you use appreciated real estate to make a gift, you can usually eliminate capital gains tax on a portion of the gift and spread the rest of the gain over your life expectancy. A gift of unmortgaged property to fund a deferred gift annuity is preferable and generates the greatest tax benefit.
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https://giftplanning.wsu.edu/real-estate
The link above also has some other approaches for dealing with real estate appreciation
YMMV
A deferred charitable gift annuity. Are you tired of the hassles of maintaining your property such as paying taxes, utilities and repair bills? Consider donating the property to WSU in exchange for reliable payments for life for you (and someone else, if you choose). When you arrange a charitable gift annuity, you receive a federal income tax charitable deduction in the year you set up the gift annuity when you itemize on your taxes. If you use appreciated real estate to make a gift, you can usually eliminate capital gains tax on a portion of the gift and spread the rest of the gain over your life expectancy. A gift of unmortgaged property to fund a deferred gift annuity is preferable and generates the greatest tax benefit.
]
https://giftplanning.wsu.edu/real-estate
The link above also has some other approaches for dealing with real estate appreciation
YMMV