Every lender is different, but for conforming, we don't go over 45% DTI without an exception.

2) If I have to refinance the property to add the mortgage into the name of the LLC, does anyone know where I can get a loan rate at a 30-year fixed rate that is similar to a conforming loan rate for an individual (I'm currently seeing rates of around 4.5% if I refi and cash-out under my name)?

Same as with lenders who tell people to buy in their personal names to get the loan (since legal entites are not eligble for conforming residential loans) then quit claim deed to the LLC...Good luck.

Or in the case of the photo below a hybrid (bottom story 14x36 Silvercrest 2nd story site built)Or in some cases, depending on setback requirements and existing legal non conforming set up and installation which is Grandfathered in, you can rebuild them from the frame up.

Conforming 25% investment property financing with down payment funds coming via 1031 on a condo that we had operated as a rental for a number of years.

There are other non-conforming options, but they'll be quite a bit more expensive. 

This means that if you want to add features that enhance the property but may not conform to the standard checklist used by appraisers, you may not receive the desired appraisal value.

I assume many older properties could have non conforming windows and such that could exceed big $$$$$ to rectify 

Two recommendations that I would say, 1. check into houses that would work as a non-conforming duplex and operate a portion of the house as an Airbnb.

@Alicia Marks There are many options, depends on your avaialble time, current knowledge and how aggressive you are. 1) SLOW & STEADY: Save until you have 20% down payment to get conforming investment propertymortgage. 2) SPHERE OF INFLUENCE: Tell everyone you know what you want to do, REPEATEDLY, so it sinks in, and partner or borrow from them.3) RENTAL ARBITRAGE: Find LTR rentals and approach owners about renting them LTR, then you subleasing STR.