The human race has historically been poor at predicting future, so it's wise to prepare for multiple scenarios.Mortgage rates in 2025 may decrease slightly if inflation stabilizes and the Federal Reserve eases rates, though they are unlikely to return to pre-pandemic lows.

You can spend $150-200k and easily hit 1%.

Perhaps in return they collect an acquisition fee,  collect a construction management fee & share in a portion of the upside.

But you're going to have to offer something in return.  

There are duplexes in KC that will return the numbers you are looking for. 

This will allow you separate business income and expenses from personal income and expenses.Since you plan to house hack your bookkeeping and tax return preparation will be more complicated because a percentage of your home expenses will be personal deductions and some will be business deductions.

If you are always giving away something valuable (information, time, resources, referrals) and not asking for anything in return, you will get plenty.

I will not expect it to match my usual return.

2.How can I better evaluate and communicate an investor’s return on investment (ROI)?

But I could easily make this a 3 bed, 2 bath within the existing sq ft.