Networking may put you in contact with private investors and/or individuals who know them. If approached correctly, attending local real estate meetings has the potential to point you in the right direction. You will find find plenty of new investors and might have to sift through a lot of nonsense but collecting business cards, exchanging numbers, etc. and properly following up can yield some positive results.
Putting out ads/postings has helped a few investors I know. Not a guarantee you will attract the right element, but I have seen it work. Local paper (classified section), real estate forums, newsletters put out by real estate professionals, venture capital sites, seed money brokers - all can be good sources. Taking it a step further, you can purchase mailing lists from data providers and send out e-mail messages or letters.
Another avenue to high net worth individuals would be reaching out to real estate attorneys, CPAs who specialize in dealing with real estate investing, and real estate agents who list/sell real estate investment properties. Usually these people know of cash investors who could be looking for opportunities to place money.
Lastly, you do have two properties which you can put up as collateral. We at GROUNDFLOOR can help you refinance these properties and pull enough cash out to invest in your multi-family project. Not sure how much you are looking for or how much these properties are worth, but if the numbers make sense, we can assist in getting you the required 25% down. Our loans are quick, require no personal guaranty, and our rates are very competitive.
Give me a call or send me an e-mail if you would like to discuss.
Business Development Manager