Me & my sister co-own a duplex and I would like to sell it and put the money toward my primary residence(sole ownership).

Am I allowed to ask a tenet to verify child support payments if they put that on their lease application in CO?

I think the issue here is your co-mingling commission with agency. 

We have been one of the top rated Airbnbs on our island since we listed in 2018 and have grown that success to include co-hosting for other buyers.

They also give you contacts for title co, lawyers and alike.- Investor / Wholesaler

Thanks.Just found out that my student son may be able to qualify for 3.5% down FHA loan with us as co-signors!

It was suggested to me that Colorado was the best place to do this. 

You'll have Craigslist, Biggerpockets, referrals, you can call title companies, and even other wholesalers if you have no luck finding a buyer. 50% of a deal by co-wholesaling or joint venturing is better than 0% of no deal.

So are you saying we can keep the security deposits (from 6 bedrooms/tenants) co-mingled in the Savings account?

We have medium-term rentals in Denver (and Colorado Springs), and they do really well.