My wife and I have been debating whether or not to donate development/subdivision rights on our 85 acres to the local conservancy group. I have read some accounts of others doing the same, but I wanted to see if anyone here at hearth has any experience? We would only be donating our development/gas and oil development rights in order to preserve the land in "perpetuity" (as I heard a lawyer state, "as long as we have a government"). My thoughts are to keep the old farmland from being subdivided (we have 1/4 mile road frontage on both sides of the road, and lots of nice bottom land pasture; probably a developer's dream) and prevent commercial logging and overall destruction of the habitat that has made its return over the past 50 to 100 years. I figured that, with tax benefits from donation, possibly help to pay off our mortgage faster or buy more land as it becomes available. I am not sure how the whole system works, and how to tell what our tax benefits might be (short of contacting an attorney or appraisal company). Any thoughts? I'm looking for real first-hand experience and advice.