There are a lot of details that would be good to know such as size of multi, age, number of units, etc. 

Thanks so much for this detailed answer.

@Dwayne RamseyThank you Dwayne, that sounds like some details to dig in to.

Get detailed quotes on these to ensure it’s cost-effective.Zoning & Permits: Verify that your current property allows additional homes and meets zoning requirements for multiple units.Rental Demand & ROI: Assess demand for singlewide rentals in your area to confirm it’ll be profitable after all expenses.If everything checks out, these could be solid additions to your portfolio.

Once we have platted lots all engineering details are done . 

I found this opportunity through a detailed Zillow search I had pinpointed the specific streets in the neighborhood I liked.

Any details on the typical specification of these and where to put them up would be very helpful.2) We have tank water heaters serving the units located in the basement of the building.

Any details of your experience and how it works would be greatly appreciated.  

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

I have seen detailed reports from airdna where you can see how long it has been listed.