Looking for GC/plumbers for Bonus room conversion to a Full bathroom, any recommendations?

Jason provided some awesome recommendations on securing a reputable GC, like tying the funding to completion of work, requiring the appraiser submit updates before funds are released and working with GCs who use a net 30 payment cycle, and also going and meeting these various professionals face to face in the market your prospecting. 

Can you kind folks please give me references to at least two or three reputable private money lenders in San Antonio TX area that will not rip me off?

I can say that while these were terrible experiences, I am now a fully qualified plumber and electrician and much better at selecting tenants.

Also, referrals for reputable contractors would be great.

The plumber thinks the issue is with the water line to the house (built in 1935).

Interview a few other reputable agents in your area.Commissions are always negotiable.

If we do not find a better alternative we will need to change accounts to SDCCU (which has a good reputation (much better than Wells Fargo which has a terrible reputation), it is just a pain to switch).So we are trying to figure out our options ideally in the next few days because if we have to switch banks there is a fair amount of work (our Property payments are all automated: mortgage, water, trash, etc. as well as we have to get the new payment method to all of our tenants that use the direct deposit).We did consider Paypal but some of our tenants are not IT literate (even though they pay a lot for rent they do not have extra money for smart phones or PCs).I will talk to my property management partners about the option of not switching banks and requiring the tenants to send money orders to the PO box. 

The RE broker found someone reputable and got back to me with a quote of $45K for the big office building and 40K for the smaller office building (would need to be done in next 3 years) – this would include tear down, using shingles that last 30 years, repairing mortar joints on chimney, etc.

In every case, it's very advisable to have these types of loans serviced by a reputable and licensed servicer in that state so that this can be proven.