Alternatives? 

Alternatively, does anyone know of a loan originator who can help me create my own friendly line of credit from one of my LLCs and record the liens?

But if you’re looking for a free alternative, county property records can work but take more time.

What materials do you want to use? 

Depending on your loan structure I'm not even sure you could legally offer a personal guarantee outside of the loan for that money without committing mortgage fraud, as anything that could hinder the ability of the primary lender to recover their principal is supposed to be declared during their diligence period, and any material changes up to the point of taking the loan are supposed to be disclosed as well.

MTR seem like a great alternative there, especially with so much demand for flexible stays.

To avoid any confusion, this is not the same thing as ( “home sharing”, or an “owner-occupied rental.”)Improvements generally need to be depreciated over 15 years, note I said generally, depending on the nature of the improvement and how long the IRS standard depreciation period is for the cost and size of expenses.Strategies depend on a number of things including, but not limited to: type of property, your material participation, how long you plan to hold it, your goals.

A lot of people shrug off Modular and Manufactured but they are both cash cows and help avoid longer construction times, higher material costs and less permits. 

The STR Loophole (materially participate & less than 7 day rental) vs. providing substantial services.  

IMHO this isn't an acceptable trait in a flooring material.