My question is can we create a LLC for her and Dscr refinance our current property into it to free up my dti?

You can also look into the builder to make sure that they are reputable.Also, look up some videos on selling a house for sale by owner in your state.

I am calling the phone numbers in these ads asking if the owner is interested in selling the property.

Here are the 13 properties.

@Jonathan Grzeszczyk - I'm a flipper, investor and property management company owner in CT. 

Property is occupied but lease renewal is this month.

I’d recommend connecting with local property managers and agents as soon as possible—agents can help you identify deals that fit your BRRRR criteria, and property managers can give insight into rental demand and market rents.

Is it an A-class property, or a C-class?

Since part of your home is a rental, you can deduct a portion of expenses like mortgage interest, property taxes, and utilities.

With the down payment you're putting down (assuming it's at best 25%) with current interest rates, you're maybe going to be scraping a couple of backs cash flow on a Class C+ property.