I guess it is possible you could also take building plants, but I wouldn't take that time or effort, because I don't think they will allow you to do want you want to do.   

It is now impossible to build a coal fired power plant that is profitable with the current regulations. 

Live in the property, swap your rent payment for a mortgage, do some renovations, eventually get market rent, and also help force your neighborhood to change (by planting more trees on the street, work with law enforcement to make the area safer, organizing neighborhood cleanups). 

I am pretty sure by the time water travel from the water treatment plant to our home, the water pretty much has lots of stuff in it already.

Connect, make great money, leave a legacy for our families & plant amazing seeds in others... 

We haven't invested in that area, but with the new Novelis $2.5B plant and 1000 jobs going into Bay Minette & Foley population pushing outwards, I think there is definitely opportunity in that area!

Furthermore, Intel is spending 20 Billion dollars to build two semiconductor plants, and many more great things presently and coming in the future.

A new production plant can easily take 20yrs from date of decision and funding to coming online.

The lower unit tenant has lived there longer and has her furniture there with plants, but the upper unit has recently been leaving food out for an outdoor kitten on the porch  and so the two units have been arguing over who the porch belongs to.

In our experience, rooming houses tend to serve very specific demographics, such as:students - we operate a rooming house which serves international students attending the local universities;{a specific} work force:  It is not uncommon to find rooming/boarding houses in close proximity to major employers (factories, hospitals, fish plants; etc);seniors:  A rooming/boarding house which serves seniors;the displaced & transient:  Rooming houses which serve those on the fringes of society (mental illness, transient, addictions).The population you serve will very much dictate the type of operation you will run and each comes with its own management challenges and rewards.My third question is, "Is this rooming house compliant with local zoning and bylaws?"