Ballpark numbers: Conventional = 5%Private = 10%Hard Money = 15%Is this generally accurate?

My accountant likes it as I can send him a copy of my file and get his direct input where needed.It also lets me track each asset individually and track WIP for each property so I can get accurate profit and loss statements as I go. 

Crunch all the numbers so you have to input values and get more accurate cash flow/return on investment calculations. 

Now, with all of that said just be aware that the higher appraisals aren't necessarily the accurate appraisals.

Do you know if the tax figures on Zillow are accurate?

You put 3k down for closing costs, which is roughly equal to what you'd need to escrow just to close, assuming the $250/mo property tax estimate was accurate. 

John is accurate be patient and while you are waiting - BE READY!

And even if you do, there is always a level of "gambling" involved when dealing with these properties.Disclaimer: While I’m an attorney licensed to practice in PA, I’m not your attorney.

How do I go about verifying these numbers to make sure they are accurate?  

Realtors usually will give you a more accurate value of the property and bring clients.