I just want to clarify that this is all legal as it is my private property.

I would look at hard money, private, or alternative lenders to get funded. 

. $14,900 for a down payment will be through a personal private money lender (who doesn’t care much about a return) he is just helping out.

They have no jurisdiction in a private parking lot.

.- They are as close to identical as possible in style, condition, age, location, beds, baths, living area, acreage, garage and basement specs, town vs private utilities, flood zones, etc.Finally, I'd like to be sure that the agent hasn't run automated comps. 

I’ve always rented the ADU but a few years ago my wife and I remodeled to make our old master into a private entrance, private room.

Ill get straight to the point, I do not know what kind of financing I Qualify for other that private lending.

Find a private lender to loan you what you need for the downpayment ASAP.

If house hacking isn't an option, you could consider a partnership or see if you can get private money.Does the stepbrother have a job and it is a gift that he doesn't pay rent or is he a mooch? 

Currently I am interested in a few strategies ( BRRRR, fix and flips, and wholesale) but with no capital of my own to invest I would have to use a partnership, private lender or hard money.