CONCENTRATIONS

Tenant 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 25.3% and 11.3% of our office segment revenues for the three months ended March 31, 2020 and 2019, respectively. At March 31, 2020 and December 31, 2019, $11,000 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 2.2% and 23.3% of our office segment revenues for the three months ended March 31, 2020 and 2019, respectively. At March 31, 2020 and December 31, 2019, $101,000 and $282,000, respectively, was due from Governmental Tenants.

Geographical Concentrations of Investments in Real Estate—As of March 31, 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 March 31, 2019.

Our revenue concentrations from properties are as follows:



	Three Months Ended March 31,
	2020		2019
California	91.9	%	76.5	%
Texas	7.7		3.6
Washington, D.C.	0.4		19.9
	100.0	%	100.0	%

Our real estate investments concentrations from properties are as follows:



	March 31, 2020		December 31, 2019
California	93.9	%	94.4	%
Texas	6.1		5.6
	100.0	%	100.0	%