I think most pet owners expect that. 

imho the 121 and 1031 are two of the best features of the tax law benefitting real estate owners. 

They can hold the lot as collateral and they would get to keep the deposit too if the owner defaults.

I'm guessing the owner won't provide financing for you?

@Wai-Lin William Maw You may want to talk to some experienced park managers and owners in the area who have done the same thing.

I need lists of owners of vacant parcels of residential land.

He categorizes transactions, reconciles accounts, manages payroll, collections, builds & sends owner statements to clients, and generates our p&l at the end of the month.

Look at lists of properties that are on the Sheriff Sale, and Tax Sales, as some of those could have assumable mortgages, and provide a list of potential assumable mortgages, where the owners are potentially losing their properties.David KrulacBigger Pockets Podcast guest #82  

I'm unsure what the right path is, but I've been reading & watching podcasts about investing in owner-occupied, single family properties.

For example, an owner headed to foreclosure might sell you a property "Subject-To" where you take over their loan at a LOW LOW rate which changes the math a LOT when analyzing a deal!