@Yiyi Zhang  if you look at property records either online or at the courthouse, for each property besides providing the property address, it also provides the mailing address of the owner. 

The tenant can find out who you are through public records.

Getting the judgement is the first step, then get it recorded.

The lease was recorded with the county but has no terms in it stating that lease transfers with a property sale.  

We are at likely record high price to rent ratios (like much of the country) without much upside on rent growth in the mid-term paired with steeply rising taxes, financing, and insurance costs.

I have been eyeing a property that is listed as a fairly new mobile home sitting on almost a full acre, checked out tax records etc and the land does belong to the seller.

With the Contractor having no insurance again you are more likely to be drawn into an lawsuit.I strongly recommend that you only use Licensed contractors with a good track record and with full insurance. 

Will never provide info on someone we provided a loan too, if someone wants to check public records they can research and find the DOT/Mortgage pretty easily but not getting it from me. you can easily skiptrace and public records search people today and determine if they are legit or not, its not hard. 

IRS and industry compliance: Select a firm with a strong track record of delivering IRS-compliant studies.

Low or no money down can be high-risk and should only be attempted when you have a proven track record and really know what you are doing.