[jgrason]

Look at your Villages contract. These two clauses address your situation. Note that any adjustment of tax prorations based on estimates is between buyer and seller and is contingent on signing an agreement to that effect. If you and the seller did not sign a statement that agrees that prorations (over and under) will be adjusted post closing at either's request, then you don't really have much of legal leg to stand on if you sue.

(h) PROPERTY TAX DISCLOSURE SUMMARY:
BUYER SHOULD NOT RELY ON THE SELLER'S CURRENT PROPERTY TAXES AS THE AMOUNT OF PROPERTY TAXES THAT THE BUYER MAY BE OBLIGATED TO PAY IN THE YEAR SUBSEQUENT TO PURCHASE. A CHANGE OF OWNERSHIP OR PROPERTY IMPROVEMENTS TRIGGERS
REASSESSMENTS OF THE PROPERTY THAT COULD RESULT IN HIGHER PROPERTY TAXES. IF YOU HAVE ANY QUESTIONS CONCERNING VALUATION, CONTACT THE COUNTY PROPERTY APPRAISER'S OFFICE FOR INFORMATION.

L. Prorations; Credits:
Taxes, assessments, rent, interest, insurance and other recurring expenses of the Property shall be prorated through the day before Closing. Buyer shall have the option of taking over existing policies of insurance, if assumable, in which event premiums shall be prorated. Cash at Closing shall be increased or decreased as may be required by prorations to be made through day prior to Closing, or occupancy, if occupancy occurs before Closing. Advance rent and security deposits will be credited to Buyer. Escrow deposits held by mortgagee will be credited to Seller. Taxes shall be prorated based on the current year's tax with due allowance made for maximum allowable discount, homestead and other exemptions. If Closing occurs at a date when the current year's millage is not fixed and current year's assessment is available, taxes will be prorated based upon such assessment and the prior year's millage. If current year's assessment is not available, then taxes will be prorated on prior year's tax. If there are completed improvements on the Real Property by January 1st of year of Closing, which improvements were not in existence on January 1st of prior year, then taxes shall be prorated based upon prior year's millage and at an equitable assessment to be agreed upon between the parties; failing which, request shall be made to the County Property Appraiser for an informal assessment taking into account available exemptions. A tax proration based on an estimate shall, at request of either party, be readjusted upon receipt of tax bill on condition that a statement to that effect is signed at Closing.