Went to a community College for diploma, then worked, interned and got hired in her field of study before graduating college with a bachelor's last month with no debts in a growing field with high demand and six figure yearly salary.She bought a primary residence 2020 with 3% down and house hacked, which allowed her to live rent free for 2 years while tenants paid down the loan.

I'm also curious about what the process looks like for other landlords who have gone through this.

Similar process.

A key consideration here is the refinance process.

Hey guys I am the process of doing my 4th investment deal. 

-repeat the process every year by acquiring one house every year with the appropriate income qualification

The P&L isn't going to tell you that, you need to see the Balance Sheet.Put it simply, if an investor decided to hire someone like me to start handling their books and have to gather their financial statements, I would be charging an arm and leg to put it correctly.

The process requires some knowledge from your agent. 

In the process of refinancing to a permanent loan.

I more so meant if there are people you could hire to do a pre-inspection to ensure you pass on the first go!