||To obtain an estimate of the amount required to redeem your property, you should contact the office of the Tax Collector by letter, telephone, or in person. The location and mailing address is County of Riverside, Treasurer-Tax Collector, 4080 Lemon Street, 1st Floor, Riverside; P.O. Box 12005, Riverside, CA 92502-2205. The telephone number is (951) 955-3900 or (877) 748-2689 for those taxpayers in the 951 and 760 area codes. Whether making your request by letter, phone, or in person, you will need to provide the assessment number which you can find on a previous tax bill, or the address or legal description of the property. Also, be sure to specify the date on which you wish to redeem so that the penalty can be calculated properly.