If you do a risk assessment of the area, property and likelihood that you can collect rents easily, then you should be good.I have about 25000 saved up and I'm living at home for free how much of that should I spend on a property or save. 

The property taxes in Palm Beach County are on average 2% of the assessed value of the property.

The main variable that jacks up the assessment value is the household income of every neighborhood you find those lots in, I’ve seen lots in low income areas that had a much lower acreage value.

I've had 4 different local RE agencies assess the asset at €580K, €650K, €730K and €800K. 

I don't know if it works in PA or Philly but I fight my taxes every year here in Texas and I usually get quite a bit knocked off. 9 appeals so far and we have lowered assessments by $243,940.

After assessing the property’s potential, we negotiated a favorable purchase price of $21,000, ensuring room for profitable renovations and a solid return on investment.

There are also nonzero probabilities of having special assessments for a medium-term horizon. 

Both electrical and water meters will need to be assessed by the city via city permitting.

@Gavin Sorensen, like Henry noted, this is impossible to assess.  

For example, they'd pull 4 of 5 payments for a borrower from the same account and then blamed the borrower for not checking to make sure the payment was pulled before a late fee was assessed.