Renting the Baltimore property first might provide some additional cash flow to support the ADU project.

If you provide us with some details we might be able to better help, what did the last one look like?

An additional benefit of a detailed engineering-based Cost Segregation Study is that it can increase potential insurance premium savings as well as provides support for the property tax appeals process.Additionally, it can help maximize renovations and improvements.A Cost Segregation study is an IRS approved federal income tax tool that increases near term cash flow by utilizing shorter recovery periods for depreciation to accelerate return on investment.

My father wants to use his SDIRA to provide a loan to the LLC him and I are equal partners in.The loan would provide the additional funds we require to purchase an investment property.The LLC would pay principle and interest at market rate to the SDIRA.Would this be considered a disqualified transaction? 

Newer brokerage policies in our mls have more clearly separated listing and buyer broker fees, so you can likely interview nearby buyer brokers who will provide the service for a set cost or possibly work with you to represent you on an agreed upon sales commission where if seller doesn’t offer to cover it, there’s a minimum you’ve agreed to pay to broker on any purchases that are realized through their service.

*However, when I made it clear to mortgage brokers that I did not want the DSCR lender nor the servicer to report to the credit burueas or impact my DTI, they said that they could accommodate that as long as the loan docs and the title are in the name of the LLC (borrower = LLC, not me personally).

Secondly, transparency is key—ensure the lender provides clear information about all fees and costs involved line by line.

Whatever has been provide to any w2 employee you will provide.

You did a good job of explaining your situation, but I would think I would have more questions before providing any firm advice. 

Hector, I'll give you some opposite advise than what most on this site are providing.