735 ILCS 5/12-910
If in the opinion of the judgment creditors, or the officer holding a certified copy of a judgment for enforcement against such individuals, the premises claimed by him or her as exempt are worth more than $15,000 , such officer shall summon 3 individuals, as commissioners, who shall, upon oath, to be administered to them by the officer, appraise the premises, and if, in their opinion, the property may be divided without damage to the interest of the parties, they shall set off so much of the premises, including the dwelling house, as in their opinion is worth $15,000 , and the residue of the premises may be advertised and sold by such officer. Each commissioner shall receive for his or her services the sum of $5 per day for each day necessarily engaged in such service. The officer summoning such commissioners shall receive such fees as may be allowed for serving summons, but shall be entitled to charge mileage for only the actual distance traveled from the premises to be appraised, to the residence of the commissioners summoned. The officer shall not be required to summon commissioners until the judgment creditor, or some one for him or her, shall advance to the officer one day's fees for the commissioners, and unless the creditor shall advance such fees the officer shall not be required to enforce the judgment. The costs of such appraisement shall not be taxed against the judgment debtor unless such appraisement shows that the judgment debtor has property subject to such judgment.
735 ILCS 5/12-910