The city may also provide that:

1.  The project and improvements to be constructed, if any, shall be constructed by the city, lessee or the lessee’s designee, purchaser or purchaser’s designee, obligor or obligor’s designee, or any one or more of them on real estate owned by the city, the lessee or the lessee’s designee, or the purchaser or the purchaser’s designee, or the obligor or the obligor’s designee, as the case may be.

2.  The bond proceeds shall be disbursed by the trustee bank or banks, trust company or trust companies, during construction upon the estimate, order or certificate of the lessee or the lessee’s designee or of the purchaser or the purchaser’s designee, or of the obligor or the obligor’s designee.