Typically architect-designed, but also some design-build.To date though, always owner financed. 

The plan is to owner occupy a unit and rent the other unit.

Lending to a flipper is much riskier and carries a much higher risk premium than owner-occupied loans, which currently carry a National Average according to unbiased publication Mortgage News Daily, of 7.13%.

@John Morgan I use the AAOA (American Apartment Owners Association) screening now and it is very good.

We have purchased 2 previous owner occupants.

The technique to attempt, is an owner carryback on the equity as a 2nd.

Hoping I could do a Subject 2 as the owner purchased in 11/2022 and regular finance to the deal price. 

To find the contacts for LLC owners you can always search for the names in Open Corporate and then skip trace their mailing address.

The owners wanted a quick cash sale, as-is.

While during your due diligence, work on negotiating with either of the adjacent owners for a cross access agreement.