Indiana Code Title 36. Local Government § 36-7-3-5

Sec. 5. (a) If there are five (5) or more specific tracts of land in a municipality that:

the municipal legislative body may cause the tracts to be surveyed, platted, and given a specific number on the plat.  If the survey and plat are approved by the legislative body and recorded in the platbook records of the county in which the municipality is located, they have the same legal effect as if they had been made by the owners of the tracts under section 3 of this chapter.

(b) Tracts surveyed under this section may be described and conveyed by the numbers assigned to them, in the same manner as other platted lots.  However, a new public way may be laid out or opened only with the written consent of the owner of the real property to be affected.