Tax Law, § 1105(a)
Example:
A masonry contractor sets forms for pouring a foundation footing in the performance of a nonagency contract for the erection of a building for an exempt organization. The walls are set upon the footing and the foundation is backfilled. The supplies used in making forms are left in the ground since the cost of removal is more than the salvage value. Although the supplies stay with the job they are considered abandoned and not transferred to the customer as a component part of the project. The cost of the supplies is taxable to the contractor.
Cross-reference:
For refunds and credits based on purchases in bulk, see section 534.3 of this Title. For computation of compensating use tax, see Part 531 of this Title.
N.Y. Comp. Codes R. & Regs. Tit. 20 § 541.10