Indiana Code Title 4. State Offices and Administration § 4-23-15-2

(a) to provide the governor of the state of Indiana a suitable and fitting residential site located at the seat of state government;  and

(b) to make provision to maintain, remodel, expand, finish, refinish, furnish or refurnish, construct or reconstruct such residential site either of the existing mansion and any expansion thereof, or any other acquired site for such governor's mansion, all as may be required from time to time.