I guess I don't know how to make the @xxxxx function work yet.

You're new to being licensed, but it sounds like you don't plan to function as a traditional agent.

If you have a clean and functional property and priced it right, you will find the right tenant.

I used to ask similar question like this before but after quite sometimes I found the car should be divided by its own functionality, so one family is good to have:1. one luxury sedan2. one SUV/4WD for snow travelling3. one truck4. one cheap sedan for commuting  or for each kid.5. one minivan to carry all my bikesI don't know I always lucky to find $5-6k nissan altima in good condition, 120k miles and never go to garage shop. 

If those pumps are functional, you shouldn't have any concerns around flooding.

And since your COC return is largely a function of exceeding your fixed costs - especially your PITI - most of these dollars left on the table would have been essentially pure profit. 

This is common, particularly for industrial properties in which the tenant may install heavy manufacturing equipment that is expensive or impossible to move.Bill is correct in saying it is a function of what you want as a return.Without knowing what the user (tenant) will install or what goodwill they may have from the location and what leverage you may have at the end of the lease term; you can only work with your desired Rate of Return and the data you have.Income capitalization is a good method for investment value analysis in lieu of good sales comparison and appreciation data:You start with the current market value of the property that can be capitalized by NOI/Cap Rate, depreciated cost analysis, etc. 

Could make the yard less functional for other uses, may require care and maintenance, cleanup of leaves?

The first thing I look for in a househack is a 2 unit building that could function like a 3 unit building - so, like a 2 unit with a bonus attic or basement.

This is one of the most common threads/questions on here... rather than beating a dead horse and having the same convo that's happened a million times before, I'd suggest using the search function for "LLC" and "due on sale."