Yes there is a source on the State of New Jersey Division of Taxation website, here is the link:
If you have any other questions please feel free to contact me. I cover all of Monmouth and Ocean County and parts of Middlesex County, NJ. Thanks.
Maybe there is something else about New Jersey that he doesn't like and he's using tax "rumors" as an excuse? There is no plan, or reason, why taxes will double or triple in New Jersey. However, there are plenty of available homes with taxes below $8,000. Contact me on my website and I'll make some suggestions.