In our discussion he is ready to sell that house and then he tells me he has 25 properties (I had already seen that on the Tax Assessors site) and he said he would like to sell all of the properties.

Your best bet is to sit down with a loan officer and discuss your plans  - they will be able to tell  exactly what you can and cannot do  - you may also want to consider getting prequalified so you know how much you can buy and what your payments would be - this is especially useful in running your numbers to see if a property will cash flow or not.

Bet you a Coke they can't.Treat this property as if you were buying it off the MLS because that is exactly what you would be doing.  

just a couple of reasons:No one can buy ALL the deals themselves.Many monetization feeds on a highly ranked site (book sales, pro membership, etc) Trust through notoriety can have a high return on investment (see M.I/oceanpointe for negative example)None of these are good or bad in and of themselves.

DFW is a wonderful area and BP is a great site to get all of your questions answered. 

He has some on his site that he recommends.

Hey Vanessa, I know this is a small thing but you can get a lot of contracts from the BP site under the tools tab!

There is a gold mine of great information on this site and I'd urge you to spend some time reading and listening to the podcasts.

Interest Rate: 9.99% fixed interest rate Collateral: A first priority lien on Borrower’s fee simple interest in the Property and the improvements thereon together with any personal property owned by Borrowers related to Property Prepayment Penalty: none Loan Fees: The following fees shall be due: (1) 3.00 points, plus customary underwriting, processing, legal, administrative and site inspection fees to (**) at closing of the loan; (2) $50 application fee due upon signing of the term sheet.

I suggest you find local REI clubs via BP/Network/Events and Meetup site and start networking with like-minded investors and specialists.