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Note 13 - Segments - Assets by Reportable Segment (Details) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Total assets | [1] | $ 128,400,413 | $ 142,569,650
Cash, cash equivalents and restricted cash |  | 7,285,089 | 8,036,496
Other assets, net |  | 13,824,116 | 14,973,150
Operating Segments [Member] |  |  |
Total assets |  | 116,396,420 | 131,133,231
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] |  |  |
Cash, cash equivalents and restricted cash |  | 1,243,312 | 564,922
Other assets, net |  | 10,760,681 | 10,871,497
Office/Industrial Properties [Member] | Operating Segments [Member] |  |  |
Land, buildings and improvements, net | [2] | 69,162,017 | 74,425,180
Total assets | [3] | 70,228,381 | 76,292,662
Model Home Properties [Member] | Operating Segments [Member] |  |  |
Land, buildings and improvements, net | [2] | 40,850,511 | 37,416,000
Total assets | [3] | 41,464,138 | 38,166,964
Retail Properties [Member] | Operating Segments [Member] |  |  |
Land, buildings and improvements, net | [2] | 4,554,707 | 15,743,789
Total assets | [3] | $ 4,703,901 | $ 16,673,605
[1] | As of June 30, 2025 and December 31, 2024, includes approximately $9.9 million and $11.4 million, respectively, of assets related to consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities.
[2] | Includes lease intangibles and the land purchase option related to property acquisitions.
[3] | Includes land, buildings and improvements, cash, cash equivalents, and restricted cash, current receivables, deferred rent receivables and deferred leasing costs and other related intangible assets, all shown on a net basis.

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