This is often viewed as a "gift" so lenders place limits on the amount that can be "gifted" as well as the manner that these funds can be transferred to you. 

I was told my by loan offer over a year ago that the rates in spring of 2024 would be back in the low 6's high 5's... look where we are. 

There are "interest tracing rules", that can roughly be summarized as the interest on a loan is deductible as a business expense only if you use the funds for that business. 

If the PCR (Property Condition Report) identifies the property as IE (Insurable with Escrow) the, yes, a lender may allow you to fund an escrow account at closing.

Those funds won't be taxed and you can use them to buy your food, convert back to an Airbnb for income, and use some of it for a down payment on your dream home. 

They may be able to finance you at a low down payment if you have experience, reserves, and FICO as long as the 65% of the value can support the entire purchase price 

In general you can use funds from a HELOC to purchase and renovate rental properties.

Has anyone successfully purchased self-storage units using their Solo 401K? I am looking for more information. Any help would be greatly appreciated.Thank you

Does anyone have any experience with EJ at Eagle Commercial Funding (http://www.eaglecfs.com/)?

These cost can go as high as $40k if you end up in an area that requires ATU septic system, or as low as almost nothing, if you purchased a property with existing water/sewer taps paid for by the previous owner.