Related-Party Transactions (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Related Party Transaction [Line Items]
Reimbursable operating expense	$ 257,044	$ 236,509
Affiliated Entity
Related Party Transaction [Line Items]
Asset management fees	886,307	449,653
Asset management fees waived	27,128	127,440
Cottonwood Communities Management, LLC | Affiliated Entity
Related Party Transaction [Line Items]
Property management fees	$ 112,739	$ 54,030