Yes, a contractor can put a mechanic's lien on your house, but that is little recourse to putting food on the table.As a former subcontractor, I usually requested a deposit on larger jobs, $10,000+, on little stuff I wasnt as worries about it. 

Appreciation is only a THEORY until a person SELLS, be it gain or loss. 

I have around $130k in this project so far and am worried that I am going to have to take a huge loss on this project. 

One thing I can assure you, there isn't an asset class in the world that would have me comfortable at 100% leverage.Your money on the sidelines is great in principal but in reality it will be put to work covering the net loss on the properties you buy as you will be overleveraged and won't be able to cover your operating expenses with the rent.

I am not a rookie investor, and probably have taken enough Losses since 2001 to make most of you quit. 

I'm a small business owner in the food industry; however, real estate is where I want to be full time.

If there are clear signs of negligence (kid throws down, paper towels, food, fats) then you can get the invoice from the plumber with the notes and present it to them. 

The typical clients that seek out cost segregation studies include:Real estate companies that buy and sell multiple properties each year.Individuals with a portfolio containing investment properties including apartment buildings, multi-family homes and even single residences.Franchise owners with properties that are similar to one another such as assisted living facilities, storage facilities and golf courses.Business owners of hotels, food facilities, shopping centers, restaurants or manufacturing plants.It depends on the type of property, but generally 15-45% of the building’s costs can be classified into assets with a shorter life.

Key: cleanliness, keeping food contained and not leaving pet food out, exclusion (blocking holes where rodents can enter), keeping vegetation away from the building.If it becomes a serious problem or infestation, then call in the pros.

Lack of down payment, lack of entrepreneurial personality, low tolerance for risk, looking for the magic key that fits their desires, just want to learn, sold "Castles in the sky" with a gibberish of disconnected statements that while true in a plethora of instances do not add up to truth in any one instance, fear of failure meaning not able to take a financial loss without going into poverty, never told up front how much money they will need to spend to buy the investment in addition to paying for the class.