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Real Estate Assets - Summary of Carrying Value of Real Estate Assets (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Real Estate [Abstract]    
Beginning balance (Self storage properties, at cost) $ 51,879,327  
Improvements and equipment additions 7,390  
Ending balance (Self storage properties, at cost) 51,886,717  
Beginning balance, land 5,493,814  
Ending balance, land 5,493,814  
Beginning balance, accumulated depreciation (3,656,220)  
Depreciation expense (351,644)  
Ending balance, accumulated depreciation (4,007,864)  
Beginning balance, construction in progress 94,816  
Current development 22,401  
Ending balance, construction in progress 117,217  
Total real estate assets at March 31, 2019 $ 53,489,884 $ 53,811,737