If we understand your question correctly, the answer is no. Income and property taxes are unrelated. Your home value and property taxes are related. For example, if your home value has dropped, the Tax Assessors Office has allowed you to submit for a decrease in your property taxes.
As Cory mentioned, the cut off was April 30th. However, we have read that they may continue this program. If you choose to do it, have a realtor you know submit the form with the comparable sales for homes like yours. We have performed this service for many clients.
We hope this helps,
Mark & Kari Shea
Shea Real Estate
Home Sales Specialists
Home Valuation Specialist
Land Sales, Acquisitions & Consulting
Serving Greater San Diego