| Cover | Dec. 20, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 20, 2021 |
| Entity File Number | 001-36369 |
| Entity Registrant Name | Bluerock Residential Growth REIT, Inc. |
| Entity Central Index Key | 0001442626 |
| Entity Tax Identification Number | 26-3136483 |
| Entity Incorporation, State or Country Code | MD |
| Entity Address, Address Line One | 1345 Avenue of the Americas |
| Entity Address, Address Line Two | 32nd Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10105 |
| City Area Code | 212 |
| Local Phone Number | 843-1601 |
| Written Communications | false |
| Soliciting Material | true |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock, $0.01 par value per share |
| Trading Symbol | BRG |
| Security Exchange Name | NYSEAMER |
| Cumulative Preferred Stock | Series C [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.625% Series C Cumulative Redeemable Preferred Stock, $0.01 par value per share |
| Trading Symbol | BRG |
| Security Exchange Name | NYSEAMER |
| Cumulative Preferred Stock | Series D [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.125% Series D Cumulative Preferred Stock, $0.01 par value per share |
| Trading Symbol | BRG |
| Security Exchange Name | NYSEAMER |
