Property Tax

[John K.]

BP I need your help,

So I am a little lost in regards to property taxes. When I am looking at a property on the MLS the tax is automatically entered usually. Usually without deduction, but how far off can it be if it pulls it from the county records? For instance today I seen a rental property with taxes of $18,000 in New York, but if I go to lets say Trulia it estimates the taxes are $419 a month which equals $5028/yr. I understand websites like trulia can be off. It just sounds unreal for property taxes to be $18,000 on a $230,000 home. What is usually the easiest way to find the true property tax on a property? I have found some county's hold it online, but should I just call the county?

Thank You!