Related Party Transactions (Tables)
12 Months Ended
Dec. 31, 2021
Related Party Transactions [Abstract]  
Summary of Related Party Costs
Pursuant to the terms of the agreements described above, the following table summarizes related party costs incurred and paid by us for the years ended December 31, 2020 and 2021, as well as any related amounts payable as of December 31, 2020 and 2021.
 
    
Year Ended December 31, 2020
    
Year Ended December 31, 2021
 
    
Incurred
    
Paid
    
Payable
    
Incurred
    
Paid
    
Payable
 
Expensed
                 
Transfer Agent fees
   $ 525,108      $ 489,108      $ 36,000      $ 967,341      $ 916,349      $ 86,992  
Additional
paid-in
capital
                 
Transfer Agent expenses
     —          —          —          150,000        150,000        —    
Stockholder servicing fee
(1)
     —          645,911        631,429        161,545        636,654        156,320  
Stockholder servicing fees - SST IV
(2)
     —          —          —          1,155,887        814,908        340,979  
  
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
 
Total
   $ 525,108      $ 1,135,019      $ 667,429      $ 2,434,773      $ 2,517,911      $ 584,291  
  
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
 
 
(1)
We pay our Dealer Manager an ongoing stockholder servicing fee that is payable monthly and accrues daily in an amount equal to 1/365
th
of 1% of the purchase price per share of the Class T Shares sold in the Primary Offering. The amount incurred during the year ended December 31, 2021 represents an adjustment to the estimated stockholder servicing fee recorded at the time of the sale of the Class T Shares, based on the current estimated cessation date (March 31, 2022) of such stockholder servicing fee.
(2)
Represents the stockholder servicing fee liability assumed in the SST IV Merger.
Summary of Related Party Fees and Reimbursable Costs
Pursuant to the terms of the various agreements described above for the Managed REITs, the following summarizes the related party fees for the years ended December 31, 2021, 2020, and 2019:
 
Managed REIT Platform Revenues
  
Year Ended
December 31,
2021
    
Year Ended
December 31,
2020
    
Year Ended
December 31,
2019
 
Advisory agreement – SST IV
(1)
   $ 716,278      $ 3,211,661      $ 1,153,137  
Advisory agreement – SSGT II
     1,843,769        1,210,529        310,786  
Advisory agreement – SST VI
     178,282        —          —    
Property management agreement – SST IV
(1)
     346,179        1,429,632        602,162  
Property management agreement – SSGT II
     709,533        371,751        91,594  
Property management agreement – SST VI
     99,602        —          —    
Tenant Protection Program revenue – SST IV
(3)
     285,959        893,315        —    
Tenant Protection Program revenue – SSGT II
     636,671        257,602        37,269  
Tenant Protection Program revenue – SST VI
     158,662        —          254,148  
Other Managed REIT revenue
(2)
     1,348,035        674,140        619,210  
  
 
 
    
 
 
    
 
 
 
Total
   $ 6,322,970      $ 8,048,630      $ 3,068,306  
  
 
 
    
 
 
    
 
 
 
 
  (1)
On March 17, 2021, we acquired SST IV and no longer earn such fees.
  (2)
Such revenues primarily include construction management, development fees, and other miscellaneous revenues.
  (3)
On March 17, 2021, we acquired SST IV and such revenue is now included in ancillary operating revenue in our consolidated statements of operations.