Following - I’m based in California 

Román Law Office: Located in San Antonio, this law firm serves people and businesses in various areas including Real Estate Law.Woolley Wilson, LLP: Based in Dallas, they offer services in Real Estate and Business Disputes among others.Dunnam & Dunnam, L.L.P.: This law firm has been serving Waco and Central Texas since 1925.For a DEEPER DIVE, go to the States Legislative Register and find out who proposed the law changes.

Would that normally demand a higher sale price/cap rate based on investor appeal?

David Hodge the price per sheet is separate/different.As an example, the roofing subcontractor I use gives me a flat price per square for ripping off an old roof, and installing a new one.

you can probably look the property up on the town property records data base online, let me know if you need help :)

Youtube, mentors and podcast are the best for knowledge, once you have a decent base taking the first step will teach you the most.

Now all that being said I would take a "retainer" that is based on the rent collected in a standard month.

What happened is that the bank gave them a loan based on equity they have in a US home so the mortgage loan is on a US property and not on the Mexican property.

On occasion a buyer will hire an agent and expect to get paid, we negotiate that base don how the buyer found my property.

No caps, but you set your own price based on competition and the market.