There is absolutely no possible way that $7k is going to make any meaningful impact on whether this property makes a good investment or not.

It takes most people quite a while to build up to meaningful cash flow. 

So, again IMHO, the scales tip to this being a way to extract a few grand from a desperate homeowner.Short sales fall into a couple of categories.

I can't for the life of me find the formula for extracting the decreasing interest component of mortgage payments.

This is the number one reason in my state of Georgia in most urban core and suburban areas you do not see new parks.They have restrictions against them and also the people at the park tend to be more transient.The local elected officials get constantly bombarded by complaints from home owners about the parks being eye sores and attracting crime.I have seen some counties enact laws where you have to buy a minimum of five acres to have a trailer on it.This keeps people from buying tiny parcels and dropping trailers on them everywhere and impeding the county and cities land use plans.I would look at a park where it is sitting on premium land for commercial development.I could sell off all or parcel out smaller pieces over time to extract more money per acre.My mom's friends in their 70's and 80's have owned about 45 trailers or so for 40 years.Every time a trailer burns down or something grandfathered in goes out the city hits them hard with paying for new connections etc. that cost thousands of dollars.Believe me cities and counties do not like these things in my state.There are of course rural counties where they do not really care about such things except for right in the town.The county or city will sometimes allow a temporary conditional use for a trailer while someone is building their house on the land but the put a time limit on it.

@George Deantry zillow api http://www.zillow.com/howto/api/APIOverview.htm here is an example vba - http://johnmann.me/excel-zillow-api-extraction

A franchisee type tenant can go boom and bust so you want rental increase every year to extract maximum income otherwise they could last 4 years and then go out leaving you with flat rent.Have it as a REQUIREMENT to provide ongoing audited sales.

My goal is to have $2000 passive income every month and I will quit my job to do something more meaningful. 

Doing it this way makes my reports a lot cleaner and more meaningful.

(Wolf Tip: Wait to find that type of tenant with significantly more to lose than the investor.)The sheep investor is so happy to finally have a tenant that they never ask any meaningful questions or screen applications because they have a property mis-manager.Finally, the time comes to sell the property typically because when things are going good it ok but when it is bad it is so bad.The wolf investor knows he has a pig with lipstick in a less than desirable area so he looks for the newbie investor looking for a turnkey property in an up and coming area.