Exhibit 99.1

UNAUDITED PRO FORMA CONDENSED

CONSOLIDATED FINANCIAL STATEMENTS

The accompanying unaudited pro forma condensed consolidated financial statements presented below have been prepared based on certain pro forma adjustments to the historical consolidated financial statements of Health Care REIT, Inc. (the “Company”) as of and for the six month period ended June 30, 2013 and for the Company and Sunrise Senior Living, Inc. (“Sunrise”) for the year ended December 31, 2012. The historical consolidated financial statements of the Company are contained in its Annual Report on Form 10-K for the year ended December 31, 2012, as updated by the Current Report on Form 8-K dated August 6, 2013, and in its Quarterly Report on Form 10-Q for the three and six month periods ended June 30, 2013, which are incorporated by reference into this Amendment on Form 8-K/A. The historical consolidated financial statements of Sunrise and certain acquired joint ventures for the year ended December 31, 2012 are contained in the Company’s Form 8-K/A dated March 25, 2013 and are incorporated by reference into this Amendment on Form 8-K/A. The historical consolidated financial statements of certain acquired joint ventures are included as Exhibits 99.2 to 99.9 to this Amendment on Form 8-K/A.

The accompanying unaudited pro forma condensed consolidated financial statements give effect to the transaction which includes the following components (collectively referred to as the “Acquisition”):

Prior to December 31, 2012, Sunrise acquired majority interests in 37 joint venture properties through a series of transactions (collectively, the “Sunrise Acquisitions”) using Sunrise’s cash on hand and proceeds from a $580,834,000 loan provided by the Company. Sunrise used a portion of the proceeds from the loan to extinguish debt related to Sunrise Acquisitions. Adjustments included below to interest income and interest expense represent the elimination of interest income and expense related to the loan. Pro forma adjustments to the condensed consolidated statement of income for the year ended December 31, 2012 represent the results of operations of the Sunrise Acquisitions from January 1, 2012 through date of acquisition by Sunrise. This loan was acquired by the Company upon completion of the Acquisition. Sunrise Acquisitions included the following transactions:

Prior to December 31, 2012 the Company acquired majority interests in several joint venture properties in which Sunrise held a noncontrolling interest prior to the Acquisition through the following transactions:

PS UK and First Euro pro forma adjustments to the condensed consolidated statement of income for the year ended December 31, 2012 represent the results of operations of PS UK and First Euro from January 1, 2012 through the date of acquisition by the Company.

Pursuant to the Agreement and Plan of Merger (“Merger Agreement”), Sunrise sold the management business of Sunrise (“Management Company”) and certain additional assets and liabilities to Red Fox Management, LP (the “Management Business Buyer”) immediately prior to the Company’s acquisition of the Sunrise property portfolio on January 9, 2013 pursuant to the terms of the Membership Interest Purchase Agreement, dated as of September 13, 2012. The parties intend that under no circumstances shall the Company be deemed the owner of, or otherwise have control over Management Company or the assets, liabilities and equity thereof for any period of time (Sunrise’s historical consolidated financial statements include the results of operations and financial position of Management Company. As such, all relevant amounts relating to Management Company have been eliminated from Sunrise historical statements and adjustments identified represent assets, liabilities, revenues and expenses of Management Company).

On January 9, 2013, the Company completed the acquisition of (i) the property portfolio of Sunrise which included 57 wholly-owned properties and noncontrolling interests in 58 joint venture properties, (ii) a 20% interest in the Management Business Buyer (to be accounted for as an equity method investment), and (iii) rights to acquire additional joint venture partner interests, pursuant to the Merger Agreement for a total purchase price of approximately $2,697,712,000. As a result of the Acquisition and in accordance with the Merger Agreement, each former share of Sunrise common stock was converted into the right to receive an aggregate consideration of $14.50 in cash per share. The Company funded the Acquisition through cash on hand and funds available under the New Credit Agreement. The total purchase price of $2,697,712,000 includes cash consideration of $2,039,784,000 and the fair value of debt assumed of $77,094,000. The remaining purchase price of $580,834,000 relates to activity that occurred prior to December 31, 2012 relating to loans provided to Sunrise to fund Sunrise Acquisitions as described above.

On February 15, 2013, the Company acquired four joint venture properties through the acquisition of the remaining 80% interest in Master CNL Sun Dev 1, LLC (“Master CNL”) for cash consideration of $34,058,000 and fair value of debt assumed of $61,165,000. The remaining 20% interest in Master CNL was owned by Sunrise as of December 31, 2012 and was acquired by the Company as part of the Acquisition.

On July 1, 2013, the Company acquired (i) seven joint venture properties through the acquisition of the remaining 55.02% interest in CHTSun Partners IV, LLC (“Sun IV”); (ii) 29 joint venture properties through the acquisition of the remaining 60% interest in CC3 Acquisition, LLC (“CC3”); (iii) six joint venture properties through the acquisition of the remaining 70% interest in CLPSun Partners II, LLC (“Sun II”); and (iv) seven joint venture properties through the acquisition of the remaining 67.88% interest in CLPSun PartnersIII, LLC (“Sun III”) (collectively, these acquisitions are referred to as the “Joint Venture Buy-Outs”) for aggregate cash consideration of $362,400,000 (which includes $96,041,000 of amounts funded from restricted cash) and fair value of debt assumed of $704,985,000 (the existing secured debt relating to the Sun II properties was paid off at closing and not assumed by the Company). The remaining interests in the four portfolios were owned by Sunrise as of December 31, 2012 and were acquired by the Company as part of the Acquisition.

The unaudited pro forma condensed consolidated balance sheet as of June 30, 2013 has been prepared as if the Acquisition had occurred as of that date. The unaudited pro forma condensed consolidated statements of income for the year ended December 31, 2012 and the six month period ended June 30, 2013 have been prepared as if the Acquisition had occurred as of January 1, 2012. Such statements also give effect to the use of cash on hand to fund the Acquisition.

In the opinion of the Company’s management, the pro forma condensed consolidated financial statements include all significant necessary adjustments that can be factually supported to reflect the effects of the Acquisition. The unaudited pro forma condensed consolidated financial statements are provided for informational purposes only. The unaudited pro forma condensed consolidated financial statements are based on estimates and assumptions that are preliminary and are not necessarily and should not be assumed to be an indication of the results that would have been achieved had the Acquisition been completed as of the dates indicated or that may be achieved in the future. The completion of the valuation, accounting for the Acquisition, the allocation of the purchase price and the impact of ongoing integration activities could cause material differences in the information presented. Furthermore, the Company expects to apply its own methodologies and judgments in accounting for the assets and liabilities acquired in the Acquisition, which may differ from those reflected in Sunrise’s historical consolidated financial statements and the pro forma condensed consolidated financial statements.

Health Care REIT, Inc.

Unaudited Pro Forma Condensed Consolidated Balance Sheet

June 30, 2013

(In thousands)

Health Care REIT, Inc.

Unaudited Pro Forma Condensed Consolidated Statement of Income

Six Months Ended June 30, 2013

(In thousands, except per share data)

Health Care REIT, Inc.

Unaudited Pro Forma Condensed Consolidated Statement of Income

Year Ended December 31, 2012

(In thousands, except per share data)

Health Care REIT, Inc.

NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The unaudited pro forma condensed consolidated financial statements should be read in conjunction with the respective historical financial statements and the notes thereto included as Exhibits 99.2 to 99.9 as well as included in the Current Report on Form 8-K/A dated March 25, 2013.

Approximately $484,000 of the cash consideration was for transaction costs associated with the Joint Venture Buy-Outs. Additional transaction costs associated with the Joint Venture Buy-Outs were incurred and paid subsequent to June 30, 2013 in the amount of $4,360,000. These amounts have been reflected as an adjustment on the Pro Forma Condensed Consolidated Balance Sheet to recognize the cash that was paid and the corresponding impact to cumulative net income.

The real property associated with the Joint Venture Buy-Outs have been adjusted to their preliminary estimated fair values and the related historical balances of accumulated depreciation have been eliminated when in-service real property assets are recorded at fair value.

In addition, historical deferred loan expenses of $2,731,000 were eliminated and $1,219,000 of costs incurred at closing of the Joint Venture Buy-Outs has been capitalized.