Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Reclassifications

Reclassifications

To better present our real estate related balances, we have chosen to break out the details of real estate investments (net) in our balance sheet as opposed to disclosing the details in a footnote. In addition, we have reclassified certain accounts, as further discussed below, in HTA’s previously issued balance sheet to conform to current period presentation. In place leases and tenant relationship intangibles are now included in real estate investments (net) as lease intangibles. In addition, accounts and other receivables (net) have been combined with receivables and other assets (net). None of the revised reclassifications reflect corrections of any amounts.

Listing Expenses

Listing Expenses

Listing expenses primarily include fees associated with the Listing and share-based compensation expense associated with the long term incentive program, or LTIP, awards that we granted in connection with the Listing.

Noncontrolling Interests

Noncontrolling Interests

HTA’s net income attributable to noncontrolling interests in its accompanying condensed consolidated statements of operations relate to both noncontrolling interest reflected within equity and redeemable noncontrolling interest of limited partners reflected outside of equity in our accompanying condensed consolidated balance sheets. Limited partner units in HTALP are accounted for as partners’ capital in HTALP’s condensed consolidated balance sheets and as noncontrolling interest reflected within equity or redeemable noncontrolling interest of limited partners reflected outside of equity in HTA’s condensed consolidated balance sheets.

Recently Issued or Adopted Accounting Pronouncements

Recently Issued or Adopted Accounting Pronouncements

In January 2013, the Financial Accounting Standards Board, or the FASB, issued Accounting Standards Update, or ASU, 2013-01, Balance Sheet (Topic 210) - Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities, or ASU 2013-01, which clarifies the scope of ASU 2011-11, Balance Sheet (Topic 210) - Disclosures about Offsetting Assets and Liabilities. ASU 2013-01 requires entities to disclose both gross and net information about derivatives, including bifurcated embedded derivatives, repurchase agreements and reverse purchase agreements and securities borrowing and securities lending transactions that are subject to an agreement similar to a master netting arrangement. Entities are required to apply these disclosures for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. An entity must provide the disclosures required by those amendments retrospectively for all comparative periods presented. We adopted ASU 2011-11 and ASU 2013-01 in the first quarter of fiscal 2013 and have reflected the adoption in our disclosures to our interim condensed consolidated financial statements.