My goal is to build credible business relationships, as well as receive great advice from Local and National professionals.  

The cost of other (non-new construction) houses in the neighborhood have no relationship to the cost you'll incur to build a new house.Your costs will be based on a lot of factors:- Location- Level/type of finishes- Style of house- Size of house- Whether you GC it yourself or hire a builder- The types of contractors you use- Your negotiating ability- How strategic you are with your designs to keep costs downI've built houses for $60/sf, and I've built similar houses in other locations with different contractors for $90/sf. 

You have a very good chance of ruining your relationship with your daughter by evicting her or you getting mad because she doesn't pay rent.  

Build as many relationships here as you can.

We do have JV partnerships but that is structured at the outset of the working relationship. 

My name is Michael Palma and I am new to the bigger pockets community. I am a certified realtor and wanted to reach out to wholesalers/rehabers in the greater Orlando area.  I am getting into flipping and have around ...

What do I need to say to the seller once I have established a relationship with him/her?

In regards to your concerns, you should put together an MOU regarding the terms of your agreement with performance clauses protecting both parties, and eventually lead to a JV agreement.There are several other methods to protect yourself as well as the owner/seller, however, too lengthy to write about.Don't be too greedy, otherwise it will limit your relationships and longevity. 

People are unpredictable and it sounds like you don't have a long term relationship here.  

The monthly cost is pennies compared to the thousands of dollars you will make off of this site, relationships, and knowledge you reap.