The payment bond required to exempt an owner under this part shall be furnished by the contractor in at least the amount of the original contract price before commencing the construction of the improvement under the direct contract, and a copy of the bond shall be attached to the notice of commencement when the notice of commencement is recorded. The bond shall be executed as surety by a surety insurer authorized to do business in this state and shall be conditioned that the contractor shall promptly make payments for labor, services, and material to all lienors under the contractor's direct contract. Any form of bond given by a contractor conditioned to pay for labor, services, and material used to improve real property shall be deemed to include the condition of this subsection.