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ORGANIZATION AND BASIS OF PRESENTATION (Details Narrative) |  |  |  | 9 Months Ended | 12 Months Ended |  |
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Oct. 06, 2020 USD ($) $ / shares | Sep. 01, 2020 | Jul. 29, 2020 | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Oct. 06, 2021 USD ($) shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 17, 2019 USD ($) | Jan. 23, 2012 $ / shares
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Limited Liability Companies |  |  |  |  |  |  | two limited partnerships (NetREIT Palm Self-Storage LP and NetREIT Casa Grande LP), all with ownership in real estate income producing properties. The Company refers to these entities collectively, as the “NetREIT Partnerships”. |  |  |
Number of Limited Partnerships in which Company is Sole General Partner |  |  |  |  |  |  | six limited partnerships that purchase model homes and lease them back to homebuilders (Dubose Model Homes Investors #202, LP, Dubose Model Homes Investors #203, LP, Dubose Model Homes Investors #204, LP, Dubose Model Homes Investors #205, LP, Dubose Model Homes Investors #206, LP and NetREIT Dubose Model Home REIT, LP). The Company refers to these entities collectively, as the “Model Home Partnerships”. |  |  |
Shares Issued, Price Per Share | $ / shares |  |  |  |  |  |  |  |  |  | $ 10.00
Issuance of common stock series A, net of offering costs |  |  |  | $ 8,871,879 |  |  | $ 205,000,000,000 |  |  |
Debt instrument, maturity date |  | Oct. 01, 2020 |  |  |  |  |  |  |  |
Long-term debt, maturity, remainder of fiscal year |  |  |  |  | $ 942,863 |  |  |  |  |
Mortgage Notes [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt, maturity, remainder of fiscal year |  |  |  | 900,000 |  |  |  |  |  |
Promissory Note [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 7,700,000 |  | $ 14,000,000.0 |
Debt instrument, interest rate, |  |  |  |  |  |  |  |  | 8.00% |
Renewal fee percentage |  |  |  |  | 4.00% |  |  |  |  |
Maturity [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  | Mar. 31, 2021 |  |  |  |  |  |  |  |
Reverse Stock Split [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio |  |  | 2 |  |  |  |  |  |  |
IPO [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Issuance of stock, net of issuance cost, shares | shares |  |  |  |  |  | 500,000 |  |  |  |
Shares Issued, Price Per Share | $ / shares | $ 5.00 |  |  |  |  |  |  |  |  |
Issuance of common stock series A, net of offering costs | $ 2,000,000.0 |  |  |  |  | $ 2,000,000.0 |  |  |  |
IPO [Member] | Other Expenses [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Payment of stock issuance cost | 500,000 |  |  |  |  |  |  |  |  |
IPO [Member] | Underwriting Discounts [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Payment of stock issuance cost | $ 500,000 |  |  |  |  |  |  |  |  |
Commercial Property [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Number of commercial property fee and interest |  |  |  |  |  |  | 14 commercial properties in fee interest and have partial interests |  |  |
Commercial Property [Member] | Partially Owned Properties [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Number of property and investment |  |  |  |  |  |  | one property through our investments in limited partnerships for which we serve as the general partner. |  |  |
Model Home [Member] | Mortgage Notes [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt, maturity, remainder of fiscal year |  |  |  | $ 600,000 |  |  | $ 10,200,000 |  |  |
Commercial [Member] | Mortgage Notes [Member] |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt, maturity, remainder of fiscal year |  |  |  |  |  |  | $ 16,400,000 |  |  |

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