There are DSCR lenders will allow only a single 20 or 25% owner of an LLC to sign a Personal Guarantee (other owners are not on the loan, or liable for the loan).

It allows you, the wholesaler, to transfer your rights to purchase the property to an investor.

@Laurens Van swol a few banks that we've worked with in the past allow you to close in your personal name.

This will get you 90% of the way there and should be sufficient.It works the same in a saturated area, it's just more to sort through.You are aware that STRs in Denver are allowed only in certain zones and you must live onsite?

Ensure that the mortgage is assumable, and confirm that there are no due-on-sale clauses that could trigger the full loan balance. 

Urban Lot Splits (ULS) allow you to divide a lot into 2 parcels, and Multi-Dwelling Unit Developments (MDUD) are allowed up to 2 units per lot.

Maybe offer to split both labor and material costs, or at least find a way to make it feel more balanced.

Simply gifting him half the property now wouldn’t immediately allow him to claim the exclusion without fulfilling this residency requirement, I don't believe.One thought would be to use a HELOC to pull just enough equity out of the current home and use it to buy a smaller home, or at least the down payment.

After adding an extra bedroom and bathroom and rehabbing the house, I was well over budget.

The other hurdle is to find a contractor, that is something that you can do as well.