Consolidation, Policy [Policy Text Block]

Principles of Consolidation. The accompanying consolidated financial statements include the accounts of Presidio Property Trust and its subsidiaries, NetREIT Advisors, LLC and Dubose Advisors LLC (collectively, the “Advisors”), and NetREIT Dubose Model Home REIT, Inc. The consolidated financial statements also include the results of the NetREIT Partnerships and the Model Home Partnerships. As used herein, references to the “Company” include references to Presidio Property Trust, its subsidiaries, and the partnerships. All significant intercompany balances and transactions have been eliminated in consolidation.

The Company classifies the noncontrolling interests in the NetREIT Partnerships as part of consolidated net income (loss) in 2021 and 2020 and has included the accumulated amount of noncontrolling interests as part of equity since inception in February 2010. If a change in ownership of a consolidated subsidiary results in loss of control and deconsolidation, any retained ownership interest will be remeasured, with the gain or loss reported in the statement of operations. Management has evaluated the noncontrolling interests and determined that they do not contain any redemption features.

Real Estate, Policy [Policy Text Block]

Real Estate Assets and Lease Intangibles. Land, buildings and improvements are recorded at cost, including tenant improvements and lease acquisition costs (including leasing commissions, space planning fees, and legal fees). The Company capitalizes any expenditure that replaces, improves, or otherwise extends the economic life of an asset, while ordinary repairs and maintenance are expensed as incurred. The Company allocates the purchase price of acquired properties between the acquired tangible assets and liabilities (consisting of land, building, tenant improvements, and long-term debt) and identified intangible assets and liabilities (including the value of above-market and below-market leases, the value of in-place leases, unamortized lease origination costs and tenant relationships), in each case based on their respective fair values.

The Company allocates the purchase price to tangible assets of an acquired property based on the estimated fair values of those tangible assets assuming the property was vacant. Estimates of fair value for land, building and building improvements are based on many factors including, but not limited to, comparisons to other properties sold in the same geographic area and independent third-party valuations. In estimating the fair values of the tangible and intangible assets and liabilities acquired, the Company also considers information obtained about each property as a result of its pre‑acquisition due diligence, marketing and leasing activities.

The value allocated to acquired lease intangibles is based on management’s evaluation of the specific characteristics of each tenant’s lease. Characteristics considered by management in allocating these values include the nature and extent of the existing business relationships with the tenant, growth prospects for developing new business with the tenant, the remaining term of the lease and the tenant’s credit quality, among other factors.

The value allocable to the above-market or below-market component of an acquired in-place lease is determined based upon the present value (using a market discount rate) of the difference between (i) the contractual rents to be paid pursuant to the lease over its remaining term, and (ii) management’s estimate of rents that would be paid using fair market rates over the remaining term of the lease. The amounts allocated to above or below-market leases are amortized on a straight-line basis as an increase or reduction of rental income over the remaining non-cancelable term of the respective leases. Amortization of above and below-market rents resulted in a net decrease in rental income of approximately $3,000 and $2,000 for the three and six months ended June 30, 2021, respectively. Amortization of above and below-market rents resulted in a net increase in rental income of approximately $28,000 and $58,000 for the three and six months ended June 30, 2020, respectively.

The value of in-place leases and unamortized lease origination costs are amortized to expenses over the remaining term of the respective leases, which range from less than a year to ten years. The amount allocated to acquired in-place leases is determined based on management’s assessment of lost revenue and costs incurred for the period required to lease the “assumed vacant” property to the occupancy level when purchased. The amount allocated to unamortized lease origination costs is determined by what the Company would have paid to a third-party to secure a new tenant reduced by the expired term of the respective lease. The amount allocated to tenant relationships is the benefit resulting from the likelihood of a tenant renewing its lease. Amortization expense related to these assets was approximately $0.1 million and $0.2 million for the three and six months ended June 30, 2021, respectively. Amortization expense related to these assets was approximately $0.1 million and $0.3 million for the three and six months ended June 30, 2020, respectively.

Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]

Cash Equivalents and Restricted Cash. At June 30, 2021 and December 31, 2020, we had approximately $29.3 million and $11.5 million in cash equivalents and restricted cash, respectively, of which approximately $4.1 million and $4.2 million represented restricted cash, respectively. Our cash equivalents and restricted cash consist of invested cash and cash in our operating accounts and are held in bank accounts at third party institutions. Restricted cash typically consists of funds held by lenders to be used for property taxes, insurance, capital expenditures and leasing commissions. As of June 30, 2021, restricted cash included approximately $0.9 million in cash held in escrow that relates to a delayed like-kind exchange transaction pursued under Section 1031 of the Internal Revenue Code 1986, as amended (the "Internal Revenue Code").

Deferred Charges, Policy [Policy Text Block]

Deferred Offering Costs. Deferred offering costs represent legal, accounting and other direct costs related to our public offerings. Total deferred offering costs, as of June 30, 2021 and December 31, 2020, were approximately $0.1 million, at the end of each period. These costs include direct costs related to the preparation of a registration statement on Form S-3 filed on December 29, 2020, and amended on April 13, 2021. These costs were deferred and were included in Other Assets on the accompanying condensed consolidated balance sheets at June 30, 2021 and December 31, 2020. Offering costs/deferred offering costs/underwriters' discount in connections to the issuance of the Preferred Stock Series D were charged against shareholders' equity within Additional paid-in-capital. Offering costs typically include legal, accounting, and other fees associated with the cost of raising equity capital. As of June 30, 2021 offering costs related to the Series D Preferred Stock, netted against offering proceeds, totaled approximately $2.5 million.

Fair Value Measurement, Policy [Policy Text Block]

Fair Value Measurements. Under GAAP, we are required to measure certain financial instruments at fair value on a recurring basis. In addition, we are required to measure other non-financial and financial assets at fair value on a non-recurring basis (e.g., carrying value of impaired real estate loans receivable and long-lived assets). Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The GAAP fair value framework uses a three-tiered approach. Fair value measurements are classified and disclosed in one of the following three categories:

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Level 1: unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities;

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Level 2: quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and

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Level 3: prices or valuation techniques where little or no market data is available that requires inputs that are both significant to the fair value measurement and unobservable.

When available, we utilize quoted market prices from independent third-party sources to determine fair value and classify such items in Level 1 or Level 2. In instances where the market for a financial instrument is not active, regardless of the availability of a nonbinding quoted market price, observable inputs might not be relevant and could require us to make a significant adjustment to derive a fair value measurement. Additionally, in an inactive market, a market price quoted from an independent third party may rely more on models with inputs based on information available only to that independent third party. When we determine the market for a financial instrument owned by us to be illiquid or when market transactions for similar instruments do not appear orderly, we use several valuation sources (including internal valuations, discounted cash flow analysis and quoted market prices) and establish a fair value by assigning weights to the various valuation sources. Additionally, when determining the fair value of a liability in circumstances in which a quoted price in an active market for an identical liability is not available, we measure fair value using (i) a valuation technique that uses the quoted price of the identical liability when traded as an asset or quoted prices for similar liabilities when traded as assets or (ii) another valuation technique that is consistent with the principles of fair value measurement, such as the income approach or the market approach.

Changes in assumptions or estimation methodologies can have a material effect on these estimated fair values. In this regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, may not be realized in an immediate settlement of the instrument.

Subsequent Events, Policy [Policy Text Block]

Subsequent Events. We evaluate subsequent events up until the date the condensed consolidated financial statements are issued.