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MORTGAGE NOTES PAYABLE (Scheduled Principal Payments of Mortgage Notes Payable) (Details)	Mar. 31, 2020 USD ($)
Debt Instrument [Line Items]
Nine months remaining in 2020	$ 20,215,786
2021	23,422,230
2022	18,055,459
2023	3,611,091
2024	10,365,425
Thereafter	52,332,729
Total	128,002,720
Presidio Property Trust, Inc. Notes Payable
Debt Instrument [Line Items]
Nine months remaining in 2020	10,312,547
2021	10,472,745
2022	9,710,259
2023	1,422,043
2024	10,365,425
Thereafter	52,332,729
Total	94,615,748
Model Home
Debt Instrument [Line Items]
Nine months remaining in 2020	9,903,239
2021	12,949,485
2022	8,345,200
2023	2,189,048
2024	0
Thereafter	0
Total	$ 33,386,972

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