approximately $1.1 million for the nine months ended September 30, 2019 and 2018, respectively. The increase in the total revenues during the nine months ended September 30, 2019 of approximately $591,000, or approximately 7%, from the nine months ended September 30, 2018, reflects approximately $523,000 of increased revenue from the five properties acquired during the nine months ended September 30, 2019 as well as approximately $339,000 from the acquisition of two ground leases in Jacksonville, Florida in October 2018. The increase in the direct cost of revenues of approximately $74,000, or approximately 7%, is primarily related to common area maintenance costs incurred related to the acquisition of two ground leases in Jacksonville, Florida in October 2018.
Depreciation and Amortization
Depreciation and amortization expense totaled approximately $3.9 million and $3.6 million during the nine month periods ended September 30, 2019 and 2018, respectively, an increase of approximately $303,000, or approximately 8%. The majority of the increase, approximately $249,000, is attributable to the depreciation and amortization recognized on the five properties acquired during the nine months ended September 30, 2019.
General and Administrative Expenses
General and administrative expenses reflected in the statement of operations for thenine-month period ended September 30, 2019 and 2018 is an allocated expense from the parent company of our predecessor entity. Consequently, the allocated general and administrative expense which totaled approximately $1.4 million and $967,000 for the nine months ended September 30, 2019 and 2018, respectively, does not reflect an increase of expenses directly attributable to the predecessor portfolio and thus our operations, but rather an increase of the parent company expenses.
Net Income
Net income totaled approximately $2.9 million and approximately $3.2 million during the nine months ended September 30, 2019 and 2018, respectively, a decrease of approximately $235,000, or approximately 7%. The decreased net income reflects an increase in revenue of approximately $591,000 noted above, offset by the increase in direct costs of revenues of approximately $74,000 noted above, as well as increased general and administrative expenses as described above, and an increase in depreciation and amortization expense of approximately $303,000.
Comparison of Alpine Income Property Trust Predecessor’s Operating Results For the Years Ended December 31, 2018 and 2017
Revenue and Direct Cost of Revenues
Total revenue from our income property operations was approximately $11.7 million during the year ended December 31, 2018 and approximately $8.5 million in the same period in 2017, a variance of approximately $3.3 million, or approximately 39%. The direct costs of revenues for our income property operations totaled approximately $1.6 million and approximately $1.5 million for the years ended December 31, 2018 and 2017, respectively, an increase of approximately $151,000, or approximately 10%. The increase in the total revenues in the year ended December 31, 2018 of approximately $3.3 million versus 2017, reflects the revenue for a full year from our acquisition of the single-tenant office property in Hillsboro, Oregon, which we acquired in October 2017 and two single-tenant retail properties we acquired in April of 2017. The increase in the direct cost of revenues of approximately $151,000, or approximately 10%, relates to the expenses for a full year from our acquisition of the aforementioned acquisitions in April and October of 2017.
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