Without responding with respect to your zoning and what is allowed locally, I will discuss what is allowed on state level because i believe it will allow what you seek.In 2025 SB 1211 (Skinner) – Multi-Family goes into effect allows an ADU (I think it specifies detached but question if that is a requirement) for each legal non ADU unit up to 8 units.  

Any list you can pull for a few bucks has already been hammered by hordes of investors before you.Not saying this way can't work, but I recommend a different path...I prefer to focus on sellers who have a reason to sell but who require some effort and skill to identify.My favorites are #TiredLandlords, namely owners who have filed an eviction lawsuit against their non-paying tenants.Many of these folks are through being in the rental business and are open to hearing about a way out.Even better, #TiredLandlords are ideal candidates for seller financing, since they don't need the sale proceeds to buy another house, PLUS they are already conditioned to receiving monthly payments over a period of time.

There are numerous property types such as self storage, Mobil home parks, office, industrial, commercial residential, non commercial residential, etc.

We have products that offers cash out refinance for primary residence or 75-80% for non primary depending on the property type.

It seems safe to say the properties with lengthy periods of tax non-payment are most likely to be houses the high bidder could foreclose upon.  

Depending on the amount of months left on the lease, you could add him and if it doesn’t work out, serve a non-renewal notice.  

While previous offers were rejected, this latest proposal has prompted the company to reassess its options.In conjunction with these closures, Seven & I has announced a $520 million sale-leaseback transaction involving several 7-Eleven locations and plans to create a spinoff for its non-convenience store operations.

It’s just 7 miles from the beach, 2 miles from a large new hospital and medical campus, and within 2 miles of the county government offices.

Unless she writes it as non contingent and as is. 

That's why my question was to go ahead all over the USA to see people's suggestions for better locations.The fact that you don't think it's silly to ask a forum to recommend any place in the United States for STR and expect to get answers from people without a funnel to sell you something is silly.Jersey City and surrounding is very good for MTR opportunities because of the proximity to NYC and since you are in residency, you would be MUCH safer focusing on MTR since you have an in to other medical professionals.