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

Sec. 3. (a) A person who lays out:

shall record a correct plat of the town, addition, or subdivision in the office of the recorder of the county before selling any lots in the town, addition, or subdivision.  The plat must show public grounds, public ways, and the length, width, and size of each lot.  Lots shown on the plat must be regularly numbered.

(b) Every donation or grant to the public, or to any person, that is noted as such on the plat, is considered a general warranty to the donee or grantee named on the plat, for the purposes intended by the donor or grantor.

(c) Before offering a plat for record under this section, a person must acknowledge it before an officer authorized by law to take and certify acknowledgments of deeds.  The plat may be recorded only if it is made and acknowledged in the manner prescribed by this section.

(d) Before a person offers a plat for recording under this section, the person must submit it for the approval of:

The advisory plan commission or works board shall approve or disapprove the plat, and may require the public ways shown in the plat to be as wide as, and coterminous with, the public ways in contiguous parts of the municipality.  The county recorder may record the plat only if a certificate showing the approval of the plan commission or works board is attached to it.  If the record of a plat is not executed and approved as required by this subsection, it is void.