Best bet is to carefully analyze the zoning maps and regulations or just call the town and ask.

Additionally, make sure you’re familiar with local property laws and any regulations that could impact your investment.I agree with @Jason Wray that you can easily find a cash flowing deal under 200k. 

@Hamidou KeitaTo build a duplex or ADU in Tucson, verify zoning regulations, obtain construction estimates, budget for unexpected costs, research market rent and vacancy rates, calculate ROI, consider neighborhood and property value trends, analyze construction timeline, consider exit strategy, and consider a backup plan.

You will buy a specific property, in a specific location, in a specific city subject to specific local rules and regulations.

It's worth mentioning the STR regulations are relatively new, and I think some properties currently operating are basically grand-fathered with the old permit, and I don't know if being a new owner one'd be able to get a new permit if it's not in the designated location.

In my experience, a property with multiple cottages and outbuildings can provide all kinds of creative strategies...some folks try short-term rentals or even specialized retreats if local regulations allow.

It’s also worth diving into local regulations and HOA rules—they can shift quickly in coastal markets like this.

Now, if they are following SEC regulations, these should be spelled out in the PPM, but they might not all be in some glowing, highlighter-green table.  

If the title company won't respond, contact whoever licenses/regulates them in your state.

Let's check the Regulations 1.21-1 which clarify Section 21.