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Organization and Ownership | 12 Months Ended
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Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Organization and Ownership | Organization and Ownership Kilroy Realty Corporation (the “Company”) is a self-administered real estate investment trust (“REIT”) active in premier office submarkets along the West Coast. We own, develop, acquire and manage real estate assets, consisting primarily of Class A properties in the coastal regions of Los Angeles, Orange County, San Diego County, the San Francisco Bay Area and greater Seattle, which we believe have strategic advantages and strong barriers to entry. Class A real estate encompasses attractive and efficient buildings of high quality that are attractive to tenants, are well-designed and constructed with above-average material, workmanship and finishes, and are well-maintained and managed. We qualify as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). The Company’s common stock is publicly traded on the New York Stock Exchange (“NYSE”) under the ticker symbol “KRC.” We own our interests in all of our real estate assets through Kilroy Realty, L.P. (the “Operating Partnership”) and Kilroy Realty Finance Partnership, L.P. (the “Finance Partnership”). We generally conduct substantially all of our operations through the Operating Partnership. Unless stated otherwise or the context indicates otherwise, the terms “Kilroy Realty Corporation” or the “Company,” “we,” “our,” and “us” refer to Kilroy Realty Corporation and its consolidated subsidiaries and the term “Operating Partnership” refers to Kilroy Realty, L.P. and its consolidated subsidiaries. The descriptions of our business, employees, and properties apply to both the Company and the Operating Partnership. Our stabilized portfolio of operating properties was comprised of the following office properties at December 31, 2015:
| Number of Buildings |  | Rentable Square Feet (unaudited) |  | Number of Tenants |  | Percentage Occupied (unaudited)
Stabilized Office Properties | 101 |  |  | 13,032,406 |  |  | 517 |  |  | 94.8 | %
Our stabilized portfolio includes all of our properties with the exception of development and redevelopment properties currently under construction or committed for construction, “lease-up” properties, real estate assets held for sale and undeveloped land. 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 year ended December 31, 2015, we stabilized a development project consisting of two office buildings encompassing 108,517 rentable square feet in Hollywood, California, and a development project consisting of two office buildings encompassing 339,987 rentable square feet in Redwood City, California. These projects were included in our stabilized portfolio as of December 31, 2015. As of December 31, 2015, we had one office development project in the “lease-up” phase. We also had four operating properties and one land parcel classified as held for sale as of December 31, 2015. As of December 31, 2015, the following properties were excluded from our stabilized portfolio:
| Number of Properties/Projects |  | Estimated Rentable Square Feet (unaudited) (1)
Properties held for sale (2) | 4 |  | 465,812 |
Development projects in “lease-up" | 1 |  | 73,000 |
Development projects under construction | 5 |  | 1,910,000 |
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(1) | Estimated rentable square feet upon completion.
(2) | See Note 4 “Dispositions and Real Estate Assets Held for Sale” for additional information.
Our stabilized portfolio also excludes our near-term and future development pipeline, which is comprised of ten potential development sites, representing approximately 99 gross acres of undeveloped land. As of December 31, 2015, all of our real estate assets were owned and all of our business was conducted in the state of California with the exception of twelve office properties and one future development project located in the state of Washington. All of our real estate assets are 100% owned, excluding two office properties owned by Redwood City Partners, LLC (“Redwood LLC”), a consolidated subsidiary, and an undeveloped land parcel held at a qualified intermediary for potential future transactions that are intended to qualify as like-kind exchanges pursuant to Section 1031 of the Code (“Section 1031 Exchanges”) to defer taxable gains on dispositions for federal and state income tax purposes, which have been consolidated for financial reporting purposes (see Note 2 “Basis of Presentation and Significant Accounting Policies” for additional information). As of December 31, 2015, the Company owned a 98.1% common general partnership interest in the Operating Partnership. The remaining 1.9% common limited partnership interest in the Operating Partnership as of December 31, 2015 was owned by non-affiliated investors and certain of our executive officers and directors. Both the general and limited common partnership interests in the Operating Partnership are denominated in common units. Generally, the number of common units held by the Company is equivalent to the number of outstanding shares of the Company’s common stock, and the rights of all the common units to quarterly distributions and payments in liquidation mirror those of the Company’s common stockholders. The common limited partners have certain redemption rights as provided in the Operating Partnership’s Seventh Amended and Restated Agreement of Limited Partnership, as amended, the “Partnership Agreement” (see Note 10 “Noncontrolling Interests on the Company’s Consolidated Financial Statements” for additional information). Kilroy Realty Finance, Inc., which is a wholly owned subsidiary of the Company, is the sole general partner of the Finance Partnership and owns a 1.0% common general partnership interest in the Finance Partnership. The Operating Partnership owns the remaining 99.0% common limited partnership interest. Kilroy Services, LLC (“KSLLC”), which is a wholly owned subsidiary of the Operating Partnership, is the entity through which we generally conduct substantially all of our development activities. With the exception of the Operating Partnership and Redwood LLC, all of our subsidiaries are wholly owned.

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