Exhibit 99.1

FOR IMMEDIATE RELEASE

Extra Space Storage Inc. Reports 2013 Third Quarter Results

~ Achieves FFO, Excluding One-Time Events, of $0.52 per Share ~

~ Grows FFO by 21% ~

~ Increases Same-Store Revenue by 7.8% ~

~ Increases Same-Store NOI by 9.7% ~

SALT LAKE CITY, October 28, 2013 — Extra Space Storage Inc. (NYSE: EXR) (the “Company”), a leading owner and operator of self-storage properties in the United States, announced operating results for the three and nine months ended September 30, 2013.

Highlights for the three months ended September 30, 2013:

·                  Achieved funds from operations (“FFO”) of $0.46 per diluted share, including an $0.08 expense related to extinguishment of debt on a portfolio acquisition and a $0.02 benefit related to the modification of existing debt.  Excluding these one-time events, FFO was $0.52 per diluted share representing a 20.9% increase compared to the same period in 2012.

·                  Achieved FFO as adjusted of $0.57 per diluted share, including a $0.02 benefit related to the modification of existing debt.  Excluding this one-time event, FFO as adjusted was $0.55 per diluted share.

·                  Increased same-store revenue and net operating income (“NOI”) by 7.8% and 9.7%, respectively, compared to the same period in 2012.

·                  Increased same-store occupancy by 170 basis points to 90.6% at September 30, 2013, compared to 88.9% as of September 30, 2012.

·                  Acquired 22 properties for approximately $214.5 million.

·                  Paid a quarterly dividend of $0.40 per share.

Spencer F. Kirk, CEO of Extra Space Storage Inc., commented:  “The self storage industry finds itself in unprecedented times.  New supply remains at historical lows, customer demand is stable, and the economy continues to recover.  These favorable macro conditions coupled with our advanced technology, marketing and revenue management platforms continue to produce strong operating results and outstanding earnings growth.  We continue to see growth in our portfolio, having surpassed 1,000 Extra Space branded properties during the quarter.”

FFO Per Share:

The following table outlines the Company’s FFO and FFO as adjusted for the three and nine months ended September 30, 2013 and 2012.  The table also provides a reconciliation to GAAP net income per diluted share for each period presented (amounts shown in thousands, except share data - unaudited):

Nonrecurring Items Incurred in the Quarter:

During the quarter ended September 30, 2013, the Company incurred a loss of approximately $9.2 million related to the defeasance of loans associated with the All Aboard portfolio acquisition.  This one-time charge was recorded in the Consolidated Statement of Operations as a loss on extinguishment of debt related to portfolio acquisition and is added back in FFO as adjusted.

During the same period, the Company realized a $2.5 million benefit related to the modification of existing debt.  This one-time benefit was recorded in the Consolidated Statement of Operations as part of interest expense and included in both FFO and FFO as adjusted.

Operating Results and Same-Store Property Performance:

The following table outlines the Company’s same-store property performance for the three and nine months ended September 30, 2013 and 2012 (amounts shown in thousands, except property count data - unaudited):

Revenues for the three and nine months ended September 30, 2013, were up primarily due to increases in occupancy and rental rates for both new and existing customers and lower discounts to new customers.  Expenses were higher for the same periods due to increases in payroll, insurance and repair and maintenance expenses.

The Company’s major markets with revenue growth above the portfolio average for the three months ended September 30, 2013, included Boston, Chicago, Denver and Houston.  Major markets performing below the Company’s portfolio average included Orlando, Phoenix and Seattle.

Acquisition and Third-Party Management Activity:

During the quarter, the Company acquired 22 properties for approximately $214.5 million.  These properties are located in Arizona and California.  Subsequent to the end of the quarter, the Company acquired two additional properties located in Georgia and North Carolina for approximately $17.9 million.

The Company has 40 additional properties under contract for a total purchase price of approximately $241.0 million.  Of the 40 properties, 19 are from the purchase of a joint-venture partner’s interest in an existing joint venture.  The purchase of these properties is expected to occur by the end of 2013.  These acquisitions are subject to due diligence and other customary closing conditions and no assurance can be provided that these acquisitions will be completed on the terms described, or at all.

During the quarter, the Company added 11 properties to its management program.  As of September 30, 2013, the Company managed 253 properties for third-party owners.  With an additional 279 properties owned and operated in joint ventures, the Company had a total of 532 properties under management.  The Company is the largest self-storage management company in the United States.

Balance Sheet:

As of September 30, 2013, the Company’s percentage of fixed-rate debt to total debt was 85.7%. The weighted average interest rate of the Company’s fixed and variable rate debt was 4.0% and 2.2%, respectively.  The combined weighted average interest rate was 3.8% with a weighted average maturity of approximately 5.8 years.

Dividends:

On September 30, 2013, the Company paid a third quarter common stock dividend of $0.40 per share to stockholders of record at the close of business on September 16, 2013.

Outlook:

The following table outlines the Company’s FFO estimates and annual assumptions for the year ending December 31, 2013:

FFO estimates for the year are fully diluted for an estimated average number of shares and Operating Partnership units (“OP units”) outstanding during the year.  The Company’s estimates are forward-looking and based on management’s view of current and future market conditions.  The Company’s actual results may differ materially from these estimates.

Supplemental Financial Information:

Supplemental unaudited financial information regarding the Company’s performance can be found on the Company’s website at www.extraspace.com. Click on the “Investor Relations” link on the home page, then on “Financial & Stock Info,” then on “Quarterly Earnings” on the left of the page.  This supplemental information provides additional detail on items that include property occupancy and financial performance by portfolio and market, debt maturity schedules and performance of lease-up assets.

Conference Call:

The Company will host a conference call at 2:00 p.m. Eastern Time on Tuesday, October 29, 2013, to discuss its financial results. To participate in the conference call, please dial 800-299-9086 or 617-786-2903 for international participants, conference ID:  41650550.  The conference call will also be available on the Company’s website at www.extraspace.com.  To listen to a live broadcast, go to the site at least 15 minutes prior to the scheduled start time in order to register, download and install any necessary audio software.  A replay of the call will be available for 30 days on the Company’s website in the Investor Relations section.

A replay of the call will also be available by telephone, from 4:00 p.m. Eastern Time on October 29, 2013, until midnight Eastern Time on November 29, 2013.  The replay dial-in numbers are 888-286-8010 or 617-801-6888 for international callers, conference ID: 63478466.

Forward-Looking Statements:

Certain information set forth in this release contains “forward-looking statements” within the meaning of the federal securities laws. Forward-looking statements include statements concerning our plans, objectives, goals, strategies, future events, future revenues or performance, capital expenditures, financing needs, plans or intentions relating to acquisitions and other information that is not historical information. In some cases, forward-looking statements can be identified by terminology such as “believes,” “estimates,” “expects,” “may,” “will,” “should,” “anticipates,” or “intends,” or the negative of such terms or other comparable terminology, or by

discussions of strategy. We may also make additional forward-looking statements from time to time. All such subsequent forward-looking statements, whether written or oral, by us or on our behalf, are also expressly qualified by these cautionary statements.  There are a number of risks and uncertainties that could cause our actual results to differ materially from the forward-looking statements contained in or contemplated by this release.  Any forward-looking statements should be considered in light of the risks referenced in the “Risk Factors” section included in our most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Q.  Such factors include, but are not limited to:

·                  changes in general economic conditions, the real estate industry and the markets in which we operate;

·                  failure to close pending acquisitions on expected terms, or at all;

·                  the effect of competition from new and existing self-storage facilities or other storage alternatives, which could cause rents and occupancy rates to decline;

·                  difficulties in our ability to evaluate, finance, complete and integrate acquisitions and developments successfully and to lease up those properties, which could adversely affect our profitability;

·                  potential liability for uninsured losses and environmental contamination;

·                  the impact of the regulatory environment as well as national, state and local laws and regulations, including those governing REITs, tenant reinsurance and other aspects of our business, which could adversely affect our results;

·                  disruptions in credit and financial markets and resulting difficulties in raising capital or obtaining credit at reasonable rates or at all, which could impede our ability to grow;

·                  increased interest rates and operating costs;

·                  reductions in asset valuations and related impairment charges;

·                  the failure of our joint venture partners to fulfill their obligations to us or their pursuit of actions that are inconsistent with our objectives;

·                  the failure to maintain our REIT status for federal income tax purposes;

·                  economic uncertainty due to the impact of war or terrorism, which could adversely affect our business plan; and

·                  difficulties in our ability to attract and retain qualified personnel and management members.

All forward-looking statements are based upon our current expectations and various assumptions. Our expectations, beliefs and projections are expressed in good faith and we believe there is a reasonable basis for them, but there can be no assurance that management’s expectations, beliefs and projections will result or be achieved. All forward-looking statements apply only as of the date made. We undertake no obligation to publicly update or revise forward-looking statements which may be made to reflect events or circumstances after the date made or to reflect the occurrence of unanticipated events.

Definition of FFO:

FFO provides relevant and meaningful information about the Company’s operating performance that is necessary, along with net income and cash flows, for an understanding of the Company’s operating results. The Company believes FFO is a meaningful disclosure as a supplement to net earnings. Net earnings assume that the values of real estate assets diminish predictably over time as reflected through depreciation and amortization expenses.  The values of real estate assets fluctuate due to market conditions and the Company believes FFO more accurately reflects the value of the Company’s real estate assets.  FFO is defined by the National Association of Real Estate Investment Trusts, Inc. (“NAREIT”) as net income computed in accordance with U.S. generally accepted accounting principles (“GAAP”), excluding gains or losses on sales of operating properties and impairment write downs of depreciable real estate assets, plus depreciation and amortization and after adjustments to record unconsolidated partnerships and joint ventures on the same basis. The Company believes that to further understand the Company’s performance, FFO should be considered along with the reported net income and cash flows in accordance with GAAP, as presented in the Company’s consolidated financial statements.

For informational purposes, the Company provides FFO as adjusted for the exclusion of non-recurring revenues and expenses, acquisition related costs and non-cash interest charges related to the Operating Partnership’s exchangeable senior notes.  Although the Company’s calculation of FFO as adjusted differs from NAREIT’s definition of FFO and may not be comparable to that of other REITs and real estate companies, the Company believes it provides a meaningful supplemental measure of operating performance.  The Company believes that by excluding non-recurring revenues and expenses, the costs related to acquiring properties and non-cash interest charges from the exchangeable senior notes, stockholders and potential investors are presented with an indicator of its operating performance that more closely achieves the objectives of the real estate industry in presenting FFO.  FFO as adjusted by the Company should not be considered a replacement of the NAREIT definition of FFO and may not be comparable to FFO reported by other REITs or real estate companies that do not define the term in accordance with the current NAREIT definition or that interpret the current NAREIT definition differently.  FFO does not represent cash generated from operating activities determined in accordance with GAAP, and should not be considered as an alternative to net income as an indication of the Company’s performance, as an alternative to net cash flow from operating activities as a measure of liquidity, or as an indicator of the Company’s ability to make cash distributions.

Definition of Same-Store Properties:

The Company’s same-store properties for the periods presented consist of 344 properties that are wholly-owned and operated and that were stabilized by the first day of the earliest calendar year presented.  The Company considers a property to be stabilized once it has been open three years or has sustained average square foot occupancy of 80.0% or more for one calendar year.  Same-store results provide information relating to property operations without the effects of acquisitions or completed developments and should not be used as a basis for future same-store performance or for the performance of the Company’s properties as a whole.

About Extra Space Storage Inc.:

Extra Space Storage Inc., headquartered in Salt Lake City, Utah, is a self-administered and self-managed REIT that owns and/or operates 1,007 self-storage properties in 35 states, Washington, D.C. and Puerto Rico.  The Company’s properties comprise approximately 667,000 units and approximately 74.0 million square feet of rentable space, offering customers a wide selection of conveniently located and secure storage solutions across the country, including boat storage, RV storage and business storage.  The Company is the second largest owner and/or operator of self-storage properties in the United States and is the largest self-storage management company in the United States.

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For Information:

Clint Halverson

Extra Space Storage Inc.

(801) 365-4597

Extra Space Storage Inc.

Consolidated Balance Sheets

(In thousands, except share data)

Consolidated Statement of Operations for the Three and Nine months ended September 30, 2013 and 2012

(In thousands, except share and per share data) — Unaudited

Reconciliation of the Range of Estimated Fully Diluted Net Income Per Share to Estimated Fully Diluted FFO Per Share — for the Year Ending December 31, 2013 — Unaudited