They probably have some web crawler that finds listing through search engines using keywords.

Removing that room would allow me to frame out a true master bedroom and even add space for a stackable washer and dryer insert. it would even give the home a bigger living room. unfortunately, the property is sitting on a crawl space foundation so I was thinking and hopefully, my mindset isn't too far fetched of maximizing the functionality of the space I have to work with.You're completely right I have come a long way to get cold feet. 

We are experienced investors and know how to try the simple things, like the auditor's web site, on-line records, tax records, white pages, etc. 

Driving Traffic to the web site with AdWords (SMART goals test)6.

I have hired leasing agents, lawn care, cleaning and web/graphics design.

Any recommendations for a web dev that can create a fast lead gen site with a simple UI that I can add content onto is appreciated.I would say finding a good realtor is probably my weakness at this point. 

If the 12' section is in a crawl space or basement and is easily accessible and isn't leaking, don't disturb it.

@Theresa HarrisLocksmith is the best route but not free.Check all of the windows, I have had to crawl through one or two before.For the cost of a stamp and a $1.69 key at Lowe’s the owner could mail you a key.Then you can get into jimmying, drilling locks, kicking doors in, etc. - but all of those are more likely to get the cops to show up

Also the house has a crawl space so the likelihood of a catastrophic flooding event is very implausible.Rental 2 2-1 bathPurchase price: 130,000.00 approximate value now 170,000.00Down Payment: 26,000.00 (20%)Interest Rate: 4.1% 30y/fixedCurrent balance: 99,600.00Current Tax: 2,482.00/yearInsurance: 750.00/yearUtilities: garbage 40.00/month renter pays all other utilitiesCurrent Mortgage w/escrow: 828.23/month 9,938.76/yearRental Income: 1,225.00/month 14,700.00/yearProfit 356.77/month 4,281.24/yearFor anyone willing to take the time to look at my situation I am looking for input on my next move.

Operation software, get a web based software so you can either view or assist any where in the world.