And I am also happy to discuss my experience in the area on valuing small/medium multi-family properties, and running short-term rentals in the Phoenix area.

Others may have a different opinion, but outside of a seller carry back up to 90% CLTV (still require some skin in the game, unless you go true hard money) 2nd liens on real estate for purchase transactions in the manner you're seeking are very difficult to get a loan against, whether it be a secondary market lender (private equity fund, balance sheet lender, family office, etc), and usually are seeking larger transcations ($1-3MM +) in this space, and are still capped at a max 75-80% CLTV (still wanting skin in the game).# 4 usually requires more explanation as its newer to the market (DM me if interested in discussing these options further), but all 1-4 appear to be potential options for you based on the limited details. 

There is a company out there right now paying 40% annualized and I know an investor who thinks its great, well yeah its great until you lose it all - as never in the history of mankind has a company been able to pay its investors 40% per year on a continuing basis.

Currently have a single family with apartment in basement I’m buying with shared utilities 

Pull any ol small-multi-family properties off of Zillow and chug away. 

Someone found us on our YouTube channel and the rest was history.

Looking for multi family projects

The rent for my current apartment, though, is roughly similar to single family homes in the area.

Someone from the company should perform a site visit of the property to do a thorough analysis and ensure eligible components are identified accurately.Licensure and experience: The firm should have licensed tax specialists and engineers and this is recommended by the IRS.Experience with your specific type of property: Not every property is treated the same whether it be office buildings, self-storage, restaurants, gas stations, mobile home parks, residential properties, multi-family, or car washes.

Thanks for the reply, this is a family friend who is selling their business and looking to retire.