Any special assesments will be assessed on the specific property you're looking at. Fill in the address at the assessor's website and you'll find the breakdown of taxes and assessments for that house... http://pic.asrclkrec.com/Default.aspx
Corona Real Estate Agent
Actually Taxes are not assess by zip code. It isn't that easy. I believe the base tax is 1.035 in the Corona area, but I believe what you want to know is what are the mello roose taxes or the special assessment taxes that are added on to the property and that unfortunately was based on each builder, the project size and the city requirements.
The good news is you have the ability to look up each property just like we as Realtors do. You just need to go to the assessors web site, there is a link on my web site...DianaM.com and then you put in the property address and find out what the base is and what the added property tax is on each property. On many of the county sites there is a question estimate my taxes and you just fill in the questions for that property address and you have your answer.
I hope you find this helpful.
Hope that answers your question.