How do I find an organization to turn my vacation rental into an assisted living facility or similar facility?  

A major Coast Guard base is being stood up in N chs on the river, the port facility is booming and expanding rapidly, and N Chs offers some of the only reasonably priced developable RE with short commuting distance of the peninsula, Mount P, and the beaches.

Have you checked zoning to verify this type of facility is allowed?

I found the road Los Elbanos Blvd, but I'm not sure if that's referring to the neighborhood or just the road: And I would assume anything close to the port is going to benefit from the job growth due to the LPG facility. 

Might want to consider being a passive investor on a Self Storage deal to see what kind of numbers and gain some first hand insight on how experienced investors are adding value to facilities. 

. - Comparative Value : RV Park, Storage Facility, Industrial, Warehouse, 5-100 unit multi family anyone?

One of the contacts I made during the pandemic told me that he would be willing to sell me his Assisted Living facility (which happens to be right across the street from where I live). 

Amazon is currently building a 45,000 SQFT “last mile” distribution center.Smaller projects happening in the area:A new public park and boat launch is being constructed in MalagaThe YMCA is moving to the old PUD building and putting in a $25,000,000 state-of-the-art facility.$2,000,000 is going to improvements to the riverfront park adding playgrounds and splash pads.Since 2022 a feasibility study has been going on for a regional sports complex boasting 16 soccer/football fields, 8 baseball diamonds, 50 meter indoor pool, gym, track, and waterpark.There are several more project revamping old warehouse building turning them into trendy new dining and retail spaces.

While paper equities had a great run in '23, I find the indexes very frothy and reduced out of those as well in my retirement accounts over the last couple weeks. 4 SS facilities sounds like a lot to sell. 

But usually the pure waters facility can handle the flow and treat it before Lake Ontario gets it.