CONCENTRATIONS

6 Months Ended

Jun. 30, 2020

CONCENTRATIONSTenant Revenue Concentrations—Rental and other property income from Kaiser Foundation Health Plan, Incorporated ("Kaiser"), which occupied space in two of our Oakland, California properties, accounted for approximately 25.2% and 17.0% of our office segment revenues for the three months ended June 30, 2020 and 2019, respectively, and 25.3% and 13.6% for the six months ended June 30, 2020 and 2019, respectively. At June 30, 2020 and December 31, 2019, $13,000 and $23,000, respectively, was due from Kaiser.

Rental and other property income from the U.S. General Services Administration and other government agencies (collectively, "Governmental Tenants"), which primarily occupied space in our properties located in Washington, D.C., which were sold during the year ended December 31, 2019, accounted for approximately 2.4% and 21.9% of our office segment revenues for the three months ended June 30, 2020 and 2019, respectively, and 2.3% and 22.7% for the six months ended June 30, 2020 and 2019, respectively. At June 30, 2020 and December 31, 2019, $102,000 and $282,000, respectively, was due from Governmental Tenants.

Geographical Concentrations of Investments in Real Estate—At June 30, 2020 and December 31, 2019, we owned 8 office properties, one hotel property, one parking garage, and one development site, which is being used as a parking lot. These properties are located in two states and in Washington, D.C. as of June 30, 2019.

Our revenue concentrations from properties are as follows:


	Three Months Ended June 30,						Six Months Ended June 30,
	2020		2019		2020		2019
California	88.6	%	74.4	%	90.7	%	75.6	%
Texas	11.4		5.2		9.1		4.3
Washington, D.C.	—		20.4		0.2		20.1
	100.0	%	100.0	%	100.0	%	100.0	%

Our real estate investments concentrations from properties are as follows:


	June 30, 2020		December 31, 2019
California	93.9	%	94.4	%
Texas	6.1		5.6

	100.0	%	100.0	%