$100,000 fine for any company per individual employing illegal aliens. 

There are lots of markets that meet this criteria and you will find PM companies of all sizes in those markets. 

I'm an investor (STR properties), realtor, and own a construction company near Texas A&M in the Bryan / CS area but travel to the 903 frequently to visit family.

My current property management company doesn’t offer this service, and the only company I know of is very hard to communicate with.

You could also use "Doug's LLC and/or assigns" where Doug's LLC is your hypothetical company.As for the assignment contract, you can get one from an attorney for probably less than $1,000, you can also make a friend at a title company, they probably have a template they could give you.  

My company currently manages 15 properties, with 20+ leads in the pipeline, and we’re expecting to double our portfolio this year.

The ones that build out great companies build the skills, then they teach the skills to people to set calls for them, go to appointments for them and they continue to build out their company as a marketing/sales operation that is more fluid to create more revenue. 

Utilize any hospitals and insurance companies that are willing to take your call.

one of my clients that has a pretty big PM company.. had a unique way of doing this.He offered 50% of the first months rent or 500.00 minimum.. he would have 4 or 5 agents at the weekly meeting handout the list of vacants .. each of them would go place a sign in the yard and first come first served.. he found that potential tenants would call the first sign if no answer they called the next one until finally someone answered.. it worked pretty awesome for him. 

Do you have a property management company you use?