I have pretty extensive relationships with the brokerage community there and they push me about 5 to 10 properties per day to look at. 

Network, social clubs, chamber of commerce, newspaper advertising , craiglist, car signs, Youtube, investor clubs, school board meetings, church groups, Personal lawyer, mailings, foreclosure lists, neighborhood door knocking, drive bys, grocery store bulletin boards, Trulia, Zillow, realtors, expired listings, RealtorTrac, FSBO, Garage sales, Open houses, Family reunions, Fire truck chaser, Funeral chaser, Floods, Classified ads, Apartment rental listings in newspaper, Current Tenants, Hud home auctions and listings, REO's, Real Estate auctions, Auctioneers, Appraisers, Relationships with Building code inspectors and others in office, Propertry Tax sales, Sheriff auction sales, Soliciting mailings to Probate lawyers, Real Estate seller lead providers, GURUS that have lead programs, Start an RE investment club locally, Hold seminars local on how to buy a home or sell your home. and on and on and on.

They were looking to establish relationships for repeat business.

@Jason Bible:I recently bought homebuyershouston though am just sitting on the URL right now as I've had some success sourcing through relationships/auctions.

But if the bank finds out about your relationship, you'll likely be excluded, too. 

It also started a relationship that will benefit both of us.

I recommend building a good relationship with your city inspector.

Best practices:  Good relationships are to say the least CRITICAL.

HelloI’m new to REI and I am wanting to start building relationships with local professionals and to start building my team.Can anyone recommend a good local, REI-friendly:RE agent,CPA, mortgage broker,portfolio lender RE attorney in the Schertz/Cibolo/Selma/San Antonio, TX region?

Introduce yourself and create a relationship.