CO landlords can still evict for all of the common grounds for eviction: nonpayment of rent, violation of lease terms, damage to property, disturbing the peace, health and safety violations, illegal activities etc. and can also still evict if they plan to conduct repairs or renovations, property demo or conversion, move in to the unit themselves or have a family member move in, withdraw the property from the rental market, or if the tenant refuses to sign a new lease with reasonable terms. 

@Chris Seveney is right....you will likely pay way more than you planned to finish the project, but in my opinion, the most important thing to do is stop the bleeding by finishing or cut off the arm completely by selling the property.  

Competition is fierce and you can't cut corners in my opinion. 

Your rent of $800 is really reasonable, my advice is still to continue increasing income, decrease other expenses (cancel unnecessary subscriptions, cut down on going out, all those little things add up to a lot.)

One property with propane pool heat and just a gas fire place I used 1,150 gallons last year (x $3.29 a gallon).Do you have a large area needing grass cut or small area?

I worked at a vineyard pouring wine and cutting cheese! 

The sheriff was unable to talk her into leaving, they needed bolt cutters to cut the chain and carried her kicking and screaming out of the house.   

Some of the top rated schools, downtowns, neighborhood, and safety ratings in the North East.

no 50k for a new build is not enough. from someone who has been talking to capital partners for a year and breaking ground on 7 new builds within 60 days as well as talking to 8 hard money lenders at a time, 50k won't cut it 

Sometimes a non-conforming space also helps with the numbers if you can find one that has egress and safety standards met.