We have been understanding about this and let it slide even though we feel as though they are not holding up their side of the lease.Now they tell us that they have moved out of the house completely, and they want us to meet today to sign off on the condition of the home.  

From what I can tell, the first listing is free and subsequent listings are $9.99 per week.   

The bed was beautiful to look at, but that bark didn't feel good on the back of the thighs when sliding in and out of bed.

With the sliding glass door and the kitchen that narrow walkway is going to have a lot of traffic and I think the renter would need to have a tiny table for 2 to make it work.

Rent around $2,000If we put 20% down payment, and assuming expense is 40% of rent and loan is 4.75% for 30-year, thenDown payment = $40,000NOI = $1,200 / monthPrincipal reduction = $2468 for year 1Cash Flow = $4392 for year 1Appreciation = $8000 for year 1ROI is a very healthy 37% for year 1, and will increase in subsequent years.I understand if we buy cheaper houses (let's say $100,000), then the ROI can be higher.  

File as a non-profit, draw a salary, and specialize in housing that has a sliding scale.

Including the one that goes to the garage and pin locks on any sliding doors

Should I let this slide and sign the contract anyway if they are not willing to provide the mailing address on contract?

They never want to pay the subsequent year taxes.

I don't know what your situation is, but if this is a 3 plex for a bit of personal side income, I would likely let it slide.