I agree with @David Krulac - hopefully your property is in one of the 2% RTT areas rather than one of the 4% or 5% RTT areas.The imputed property value used to determine the RTT amount can be found by taking the tax assessed value from the tax assessor, and multiplying (or dividing) by the common leveling ratio that the PA Department of Revenue has posted at their website, for the year and month of the transfer (the values in their table change over time).Once you have that value, and the tax rate for that location, you can figure out how much this screw up cost you ;)

I have already learned so much from BP’s website!

At least where I live, it takes 30 seconds on the parish (county) assessor's website to see exactly what the current property tax is.But it is interesting how different areas have their "thing". 

Once you build a great cash flow from these properties then you have the option to go to a better neighborhood with option to buy cash or you will have a large down payment from your current cash flow properties to buy and grow your portfolio.

To put it in perspective, what I will get on a cash-on-cash return basis on a large multi-unit property in the Sacramento-Fresno range will dwarf the gross rent I received on an annual basis from the SF apartment building. 

He claims to have "clear" title/deed to all three properties, and his name is listed as the owner on the Clerk of Court GIS mapping website.  

We have excellent credit and are looking at 15 yr fixed rate.  

A while back my wife introduced me to the BP podcasts and web site. 

I would be pre-approved for about 280k and I make around 40k a year so I'm not sure what 15k would get you.Having the money ready for down payment and closing costs is excellent and would be a point in your favor for sure.Also, an option you can consider is having someone else be a co-borrower but in this case they would also have to follow the FHA rules I believe.

@Raul R. finders fee is an  excellent idea.