16. CONCENTRATIONS

Tenant Revenue Concentrations—Rental revenues from the U.S. General Services Administration and other government agencies (collectively, "Governmental Tenants"), which primarily occupy properties located in Washington, D.C., accounted for approximately 24.4%, and 29.1% of our rental and other property income for the three months ended September 30, 2014 and 2013, respectively and 24.9%, and 28.0% for the nine months ended September 30, 2014 and 2013, respectively. At September 30, 2014, and December 31, 2013, $6,991,000 and $5,596,000, respectively, is due from Governmental Tenants (see Note 15).

Geographical Concentrations of Investments in Real Estate—As of September 30, 2014, and December 31, 2013, we owned 20 and 19 office properties, respectively, five multifamily properties, and three hotel properties, located in four states and Washington, D.C.

Our revenues concentration from properties for the periods ended September 30, 2014 and 2013, are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
California		60.3	%		56.8	%		60.3	%		57.2	%
Washington, D.C.		24.9			26.4			24.5			26.0
Texas		8.0			8.5			7.8			8.2
North Carolina		4.6			6.1			5.3			6.4
New York		2.2			2.2			2.1			2.2

		100.0	%		100.0	%		100.0	%		100.0	%

Our real estate investments concentration from properties as of September 30, 2014, and December 31, 2013, are as follows:

	September 30, 2014			December 31, 2013
California		51.7	%		50.5	%
Washington, D.C.		31.7			32.5
Texas		7.5			7.7
North Carolina		5.5			5.6
New York		3.6			3.7

		100.0	%		100.0	%

Concentration of loans receivable—Substantially all of our interest income is generated from loans collateralized by hospitality properties. At September 30, 2014, our loans receivable were 94.3% concentrated in the hospitality industry. In addition, at September 30, 2014, 11.7% of our loans were collateralized by properties in Texas and 10.5% of our loans were collateralized by properties in Virginia. No other state had a concentration of 10.0% or greater of our loans receivable at September 30, 2014.