De minimis construction activities.
(ii) De minimis construction activities. Notwithstanding paragraph (b)(2)(i) of this section, a contract is not a construction contract under section 460 if the contract includes the provision of land by the taxpayer and the estimated total allocable contract costs, as defined in paragraph (b)(3) of this section, attributable to the taxpayer's construction activities are less than 10 percent of the contract's total contract price, as defined in 1.460-4(b)(4)(i). For the purposes of this paragraph (b)(2)(ii), the allocable contract costs attributable to the taxpayer's construction activities do not include the cost of the land provided to the customer. In addition, a contract's estimated total allocable contract costs include a proportionate share of the estimated cost of any common improvement that benefits the subject matter of the contract if the taxpayer is contractually obligated, or required by law, to construct the common improvement.