26 C.F.R. § 1.170A-14 — Qualified conservation contributions

(ii) Fair market value of property before and after restriction. If before and after valuation is used, the fair market value of the property before contribution of the conservation restriction must take into account not only the current use of the property but also an objective assessment of how immediate or remote the likelihood is that the property, absent the restriction, would in fact be developed, as well as any effect from zoning, conservation, or historic preservation laws that already restrict the property's potential highest and best use. Further, there may be instances where the grant of a conservation restriction may have no material effect on the value of the property or may in fact serve to enhance, rather than reduce, the value of property. In such instances no deduction would be allowable. In the case of a conservation restriction that allows for any development, however limited, on the property to be protected, the fair maket value of the property after contribution of the restriction must take into account the effect of the development. In the case of a conservation easement such as an easement on a certified historic structure, the fair market value of the property after contribution of the restriction must take into account the amount of access permitted by the terms of the easement. Additionally, if before and after valuation is used, an appraisal of the property after contribution of the restriction must take into account the effect of restrictions that will result in a reduction of the potential fair market value represented by highest and best use but will, nevertheless, permit uses of the property that will increase its fair market value above that represented by the property's current use. The value of a perpetual conservation restriction shall not be reduced by reason of the existence of restrictions on transfer designed solely to ensure that the conservation restriction will be dedicated to conservation purposes. See § 1.170A-14 (c)(3). (iii) Allocation of basis. In the case of the donation of a qualified real property interest for conservation purposes, the basis of the property retained by the donor must be adjusted by the elimination of that part of the total basis of the property that is properly allocable to the qualified real property interest granted. The amount of the basis that is allocable to the qualified real property interest shall bear the same ratio to the total basis of the property as the fair market value of the qualified real property interest bears to the fair market value of the property before the granting of the qualified real property interest. When a taxpayer donates to a qualifying conservation organization an easement on a structure with respect to which deductions are taken for depreciation, the reduction required by this paragraph (h)(3)(ii) in the basis of the property retained by the taxpayer must be allocated between the structure and the underlying land.