The taxpayer may also be required to provide supporting documentation or evidence to support their protest.If the protest is successful, the tax authority may adjust the assessment to reflect the correct amount of tax owed.

If you were to ignore that rule above, you would be committing mortgage fraud and your mortgage company will have the option to default you (you would owe the full amount of the mortgage) if they find out that you moved out. 

A little background I purchased the property at the end of June and the tenants in this unit were late to pay in July and still owe money this month.

For example, if the seller would only accept an offer if I included 4% interest, would my payments then increase by 4% each month with the same amount going towards the principal and an additional 4% being paid in interest?

I’m trying to wholesale it for 90k, but the owner of the property owes 1,750 in taxes for the year 2018.

Once he went to jail he stopped making his payments an we evicted him for the small amount of money he owed us.

In your scenario, you are paying interest (+principal?)

I am sure that my children would not be happy owing the 4.5% if it does go to them, but I am sure they will still be OK.

We paid the arrears owed & paid off the small mortgage balance to get free & clear title.

That house will end up costing you more than the 150K that he paid for it. he is only 4 years into a 30 year mortgage when he stopped paying, probably owes 140K on the loan, taxes for the past 11 years plus liens on the house because the town probably had to maintain the property. what would the ARV be after you tear down and build a new house ?