What is a Supplemental Assessment?
State law requires the Assessor to reappraise property as of the date of the change-in-ownership or completion of new construction. The Assessor's Office must issue a supplemental assessment which reflects the difference between the prior assessed value and the new assessment. This value is then prorated based on the number of months remaining in the fiscal year ending June 30. This supplemental is in addition to the regular tax bill.

Assessor's Office

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1. My property value was reduced under Proposition 8. Now the Assessment has increased. Why?
2. What is a Supplemental Assessment?
3. What about NEW CONSTRUCTION reappraisals?
4. Is property assessed at the price paid?
5. Are there special programs available for Senior Citizens?
6. Is there a Builder's Exclusion?
7. I am over 55 and wish to move to a smaller home. Will my taxes go up?
8. What is the Williamson Act (Ag Preserve)?
9. When is Real Estate reappraised?
10. If I have an addition to my home, will you reappraise the entire property?
11. If I do the work myself, will I only be assessed on the cost of the materials?
12. Are mobile homes subject to property taxes?
13. When can I appeal my assessed value?
14. What and when is a lien date?
15. Why are my neighbor's and my tax bills different when the houses are the same?
16. What happens if I don't pay these taxes?
17. How do you calculate taxes?