Should I contact the zoning dept ?

Too many red flags?  

If the units are properly zoned than you are in good shape and I would not let this stop you from buying.

Is there a way I can inform the zoning to change it to multifamily?

The lake's beautiful setting attracts tourists, making it a lucrative spot for STRs, especially during peak tourist seasons.STR operators in Oklahoma generally need to adhere to zoning laws, licensing requirements, and may be subject to taxes such as sales and lodging taxes.

I sent an email, but it came back as undeliverable.Is this a red flag, and should I move on to other applicants?

If total, then you'll be in the red.

Get out of your comfort zone.

I have since put everything back on ebay and have sold it all, getting most of my money back. ( Very proud of myself for figuring out a way for a broke *** red neck idiot, to get basically a free Real estate investing education which so far has made me a buck or two,)    :)     Even today when I feel I need to get current in trends and techniques I go to ebay for some easy listening material, but I've found that most of it is just rehashed fluff from the origional gurus from my early years.

The game does not include the little boarded up houses :) Now what Aaron is describing could be where one of those little green houses are if you passed on the medical office worker crowd.Lets take these 3 options below and put aside the cash flow on paper part for a sec.Five years hold scenario:Medical renter 70kAarons 40k guessingBoarded up zone 20k Let say the medical center house only turns over 2 times in 5 years, no issues, one month vacant.