Only the PMC is continuously connected with you until you sell the property.

What troubles will come after construction and attempting to sell? 

I purchase the land from a local jeweler who I tracked down at his business and asked he was interested in selling.

For example, houses where the homeowner needs help and may consider selling to me. 

And it depends on what you do next - rebuild or sell as is or some other plan. 

Assuming your property is in Utah (like your profile indicates), here's the state law from a basic internet search:In Utah, a tenant who abandons a rental property without notice is liable for the lesser of the following: The rent remaining on the leaseThe rent plus the difference between the fair rental value and the agreed-upon rentThe cost to restore the property to its original conditionThe landlord can also remove the tenant's belongings and sell them if the tenant doesn't claim them within a reasonable time.

@Matthew SamsonThey shouldn't sell it.

I agree on selling. 

Basically you find these distressed properties in pre foreclosure, probates, divorces, or just ugly vacant properties. then you calculate the Max allowable offer and if it makes sense you call up the property owner, get it under contract for dirt cheap, then you assign the contract to a cash investor for an assignment fee. this is the general idea obviously it gets more in depth, but its finding deals that you would buy as a fix and flip or brrrr, and instead of actually buying it you sell it to other investors.Ahh I see, thanks for clearing that up.  

My past clients were in a tough spot and needed to sell asap.