Organization and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]



	Number of Buildings	Rentable Square Feet	Number of Tenants	Percentage Occupied
Stabilized Office Properties	107	13,305,145	527	92.4	%

Our stabilized portfolio includes all of our properties with the exception of real estate assets held for sale, undeveloped land, development and redevelopment properties currently under construction or committed for construction, and “lease-up” properties. We define redevelopment properties as those properties for which we expect to spend significant development and construction costs on the existing or acquired buildings pursuant to a formal plan, the intended result of which is a higher economic return on the property. We define “lease-up” properties as properties we recently developed or redeveloped that have not yet reached 95% occupancy and are within one year following cessation of major construction activities. During the first quarter of 2014, we stabilized a redevelopment property in San Francisco, California. As a result, this property is included in our stabilized portfolio as of March 31, 2014.

As of March 31, 2014, the following properties were excluded from our stabilized portfolio:



	Number of Properties	Estimated Rentable Square Feet
Development properties under construction ⁽¹⁾	6	2,538,000

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(1)	Estimated rentable square feet upon completion.