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Note 7 - Mortgage Notes Payable - Mortgage Notes Payable (Details) - USD ($)

15 Months Ended

Mar. 31, 2021

Dec. 31, 2020

Mortgage Notes Payable, net

$ 108,685,181

$ 120,029,696

Mortgage Notes [Member]

Mortgage Notes Payable

109,569,976

120,788,005

Unamortized loan costs

(884,795)

(758,309)

Waterman Plaza [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

^[1]

$ 0

3,207,952

Interest rate, variable

^[1],[2]

0.00%

World Plaza [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

^[3],[4]

$ 5,776,741

5,802,568

Interest rate, variable

^[2],[3],[4]

2.91%

Maturity date

^[3],[4]

Jul. 05, 2021

Garden Gateway Plaza [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

^[1]

$ 0

5,861,523

Maturity date

^[1]

Aug. 05, 2021

Interest rate

^[1],[2]

5.00%

The 300 N.P [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 2,263,143

2,273,478

Maturity date

Jun. 11, 2022

Interest rate

^[2]

4.95%

Highland Court [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

^[4]

$ 6,236,527

6,274,815

Maturity date

^[4]

Sep. 01, 2022

Interest rate

^[2],[4]

3.82%

Dakota Center [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 9,843,880

9,900,279

Maturity date

Jul. 06, 2024

Interest rate

^[2]

4.74%

Research Parkway [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 1,746,886

1,760,432

Maturity date

Jan. 05, 2025

Interest rate

^[2]

3.94%

Arapahoe Center [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 7,891,395

7,932,255

Maturity date

Jan. 05, 2025

Interest rate

^[2]

4.34%

Union Town Center [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 8,279,408

8,315,550

Maturity date

Jan. 05, 2025

Interest rate

^[2]

4.28%

One Park Centre [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 6,357,531

6,385,166

Maturity date

Sep. 05, 2025

Interest rate

^[2]

4.77%

Genesis Plaza [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 6,248,822

6,276,273

Maturity date

Sep. 06, 2025

Interest rate

^[2]

4.71%

Shea Center II [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 17,681,769

17,727,500

Maturity date

Jan. 05, 2026

Interest rate

^[2]

4.92%

Executive Office Park [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

^[4]

$ 2,967,746

2,985,998

Maturity date

^[4]

Jun. 01, 2027

Interest rate

^[2],[4]

4.83%

West Fargo Industrial [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 4,234,489

4,262,718

Maturity date

Aug. 05, 2029

Interest rate

^[2]

3.27%

Grand Pacific Center [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

^[5]

$ 3,708,966

3,738,142

Maturity date

^[5]

Aug. 01, 2037

Interest rate

^[2],[5]

4.02%

Subtotal, Presidio Property Trust, Inc. Properties [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

$ 83,237,303

92,704,649

Model Home [Member] | Mortgage Notes [Member]

Mortgage Notes Payable

^[4],[6]

$ 26,332,673

$ 28,083,356

Model Home [Member] | Mortgage Notes [Member] | Minimum [Member]

Maturity date

^[4],[6]

Dec. 31, 2023

Interest rate

2.50%

Model Home [Member] | Mortgage Notes [Member] | Maximum [Member]

Maturity date

^[4],[6]

Dec. 31, 2021

Interest rate

5.63%

[1]	Waterman Plaza and Garden Gateway Plaza were sold during the first quarter of 2021.
[2]	Interest rates as of March 31, 2021.
[3]	Interest on this loan is ABR plus 0.75% and LIBOR plus 2.75%. For the three months ended March 31, 2021, the weighted average interest rate was 2.88% per annum.
[4]	Properties held for sale as of March 31, 2021. There were 16 model homes included as real estate assets held for sale.
[5]	Interest rate is subject to reset on September 1, 2023.
[6]	Each model home has a stand-alone mortgage note at interest rates ranging from 2.50% to 5.63% per annum at March 31, 2021.

X

- Definition

The variable percentage of interest rate on debt instrument.

+ References

No definition available.

+ Details

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X

- Definition

Amount of net mortgage notes payable.

+ References

No definition available.

+ Details

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X

- Definition

The amount of notes payable including unamortized cost.

+ References

No definition available.

+ Details

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X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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X

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Details

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- Details

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