I am invested in a small multi family in TX and the management was not able to fill the property and do repairs and the income has dwindled badly.

Here are a few strategies to consider for funding a down payment:Partnering: Like Gregory mentioned, finding a partner who can contribute to the down payment in exchange for equity or a profit share is a solid option.HELOC or Cash-Out Refi: If you have equity in your home or another property, a home equity line of credit (HELOC) or cash-out refinance can provide the funds you need.Private Money: Reach out to friends, family, or private investors who may be interested in lending you the down payment with a promissory note.Seller Second: In some cases, the seller might agree to finance a portion of the down payment as a second mortgage.Live Frugally and Save: It takes time, but reducing expenses and setting aside funds from your income is a tried-and-true method.The right approach depends on your situation and deal structure, but a mix of creativity and resourcefulness can go a long way.

Income approach Also known as the rental income approach, this method estimates the market value by analyzing the property's anticipated future income and converting it to a present value estimate.

Too many low income apartment buildings near by / vacant buildings. 

At this point, I would recommend having a line of credit to cover these things so you don't have money sitting in the bank doing nothing when it could be put to work.I have 33 units, no debt except for mortgages, and excellent income.

I was interested in something like owning a rental property as a way to generate some additional income. 

I needed to find a passive real estate income stream that would work within the IRS’ self-directed IRA (SDIRA) rules.

The owner should look at it more like a DSCR, and should be pricing the property and offering terms such that the income from the property is adequate to pay back the loan.

Additionally, Airbnb income during this period could generate steady cash flow, though market conditions and regulatory risks should be considered.

I know for our portal in Buildium owners can log in and run different reports like income statements, profit and loss, general ledger, etc.