Seeing how others structure their numbers and track growth can be super helpful.

Something to look for that may result in better communication is looking for a company that has a "portfolio" structure.

✅ Foundation – Uncover structural issues that could lead to costly repairs.✅ HVAC System – Ensure heating and cooling systems are operating efficiently.✅ Electrical – Identify faulty wiring or outdated equipment that could be a safety hazard.✅ Plumbing – Detect leaks or hidden damage before they escalate into major expenses.A small investment in a home inspection can save you thousands in unexpected repairs and help protect your bottom line.Do you get a property inspected before making an investment decision?

As part of my strategy, I would like to build an master bath/bed extension, with its own entrance, to the three bedroom, two bath home mentioned in a different post.A 20'x15' (could be smaller) structure that can accomodate the bedroom and the bathroom.

The DST structure is a direct, passive and fractional interest in institutional quality real estate which allows for flexibility and diversification.  

If the latter, how does that look on a day to day in terms of operating, marketing, and the ownership structure?

While his loan isn't assumable, you could structure a deal where you take over payments while giving him equity in a seller-financed second note.

How CIPS Has Helped Me So FarAccess to a Global Network: Through my CIPS connections, I can collaborate with real estate professionals in key markets such as Dubai, Portugal, and the Caribbean, where I see strong investment potential.Understanding Foreign Markets: CIPS training provides insights into market trends, regulations, and transaction structures that differ from domestic deals.Opportunities for Investors & Buyers: Many international buyers are interested in New York and Long Island properties, while U.S. investors are exploring opportunities abroad. 

Should it be a percentage of net profits, a fixed fee, or another structure?

If there aren't any massive physical problems with the property, it appears you can grow income and equity.You might be able to buy this with little cash out of pocket if the seller owns it free and clear and was willing to finance nearly all of it.