Exhibit 99.1

MARCUS & MILLICHAP, INC. REPORTS RESULTS FOR

FOURTH QUARTER AND FULL-YEAR 2017

RESULTS INCLUDE A ONE-TIME TAX CHARGE

CALABASAS, Calif., March 8, 2018 — (BUSINESS WIRE) — Marcus & Millichap, Inc. (the “Company”, “Marcus & Millichap”, “MMI”) (NYSE: MMI), a leading national brokerage firm specializing in commercial real estate investment sales, financing, research and advisory services, today reported financial results for the fourth quarter and full year ended December 31, 2017.

Fourth Quarter 2017 Highlights

Full Year 2017 Highlights

Hessam Nadji, President and CEO stated, “Marcus & Millichap ended 2017 on a positive trajectory with revenue growth of 7.2% on a year-over-year basis for the fourth quarter in contrast to revenue decline of 6.9% in the fourth quarter of 2016. Our intensified client outreach initiatives, sales force expansion and our team’s commitment to client service provided the impetus for modest revenue growth for the year despite uncertainty that pushed many investors to the sidelines.” Mr. Nadji continued, “We are encouraged by our continued market share growth in the Private Client Market segment in light of a more challenging environment and slower sales. Our initiatives to expand our financing capabilities are also showing progress as reflected in revenue growth of 22.6% for our financing business in the fourth quarter and 14.3% for the year.” Mr. Nadji added, “We look forward to 2018 with cautious optimism. The Tax Cuts and Jobs Act is projected to be very constructive, not only for the real estate industry at large, but also for the Company given our reduced tax rate going forward. Lower tax liability, coupled with a gradual increase in market activity and further share gains, should grow our free cash flow and further strengthen the balance sheet. The Company is well positioned for strategic acquisitions and investments to make our platform more competitive. We are focused on executing these strategies to enhance long-term shareholder value.”

Fourth Quarter 2017 Results Compared to Fourth Quarter 2016

Total revenues for the fourth quarter of 2017 were $202.8 million, compared to $189.2 million for the same period in the prior year, increasing by $13.6 million, or 7.2%. The growth in total revenues was driven by the increase in real estate brokerage commissions,

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other revenues and, to a lesser extent, financing fees. Real estate brokerage commissions increased by 2.7% to $177.3 million primarily due to an increase in sales volume and, to a lesser extent, improved rates in the Private Client Market and Middle Market segments. This increase was partially offset by a decrease in average commission rates due to a larger proportion of transactions from the Larger Transaction Market segment. Other revenues increased by 164.9% to $9.9 million primarily due to a large consulting and advisory services fee during the fourth quarter of 2017 with no comparable fee during the same period in 2016. Financing fees grew by 22.6% to $15.5 million primarily due to a significant growth in financing purchases.

Total operating expenses for the fourth quarter of 2017 increased by 8.8% to $175.4 million, compared to $161.3 million for the same period in the prior year. The increase was primarily driven by an increase in cost of services and selling, general and administrative expenses. Cost of services increased by 8.3% to $131.7 million. Cost of services as a percent of total revenues rose by 70 basis points to 65.0% compared to the same period in the prior year. This was primarily due to an increase in the proportion of transactions closed by our more senior investment sales professionals, who are generally compensated at higher commission rates.

Selling, general and administrative expense for the fourth quarter of 2017 increased by 10.1% to $42.3 million, compared to the same period in the prior year primarily due to higher costs associated with (i) sales operations support and promotional marketing expenses; (ii) compensation related costs, including salaries and related benefits and management performance compensation; (iii) stock-based compensation expense and (iv) expansion of existing offices. These increases were partially offset by a decrease in legal costs and accruals.

Net income for the fourth quarter of 2017 was $8.5 million, or $0.22 per common share (basic and diluted), compared to net income of $17.2 million, or $0.44 per common share (basic and diluted), for the same period in the prior year. Net income for the fourth quarter of 2017 included a one-time charge in connection with the remeasurement of deferred tax assets, net due to the enactment of the Tax Cuts and Jobs Act. Excluding this charge of $11.6 million, adjusted net income was $20.1 million, or $0.52 per common share, basic and $0.51 per common share, diluted. Adjusted EBITDA for the fourth quarter of 2017 was $32.1 million compared to adjusted EBITDA of $31.3 million for the same period in the prior year.

Full Year 2017 Results Compared to Full Year 2016

Total revenues for 2017 were $719.7 million, compared to $717.5 million for 2016, increasing by 0.3%. Total operating expenses for 2017 were up 2.1% to $623.6 million compared to $610.9 million for 2016. Cost of services as a percent of total revenues remained flat at 62.0%. Net income for 2017 was $51.5 million, or $1.32 (basic and diluted) per common share, compared with net income of $64.7 million, or $1.66 (basic and diluted) per common share for 2016. Net income for 2017 included a one-time charge in connection with the remeasurement of deferred tax assets, net due to the enactment of the Tax Cuts and Jobs Act. Excluding this charge of $11.6 million, adjusted net income was $63.2 million, or $1.62 per common share (basic and diluted). Adjusted EBITDA for 2017 decreased by 5.6% to $111.7 million, from $118.3 million for 2016. As of December 31, 2017, the Company had 1,819 investment sales and financing professionals.

Business Outlook

We believe that the Company is positioned to continue to gain market share by leveraging a number of factors, including our leading national brand predominantly within our Private Client Market segment and specialty groups, experienced management team, infrastructure investments and proprietary technology. The size and fragmentation of the Private Client Market segment, in particular, continues to offer long-term growth opportunities with the top ten brokerage firms making up only 25.2% market share. This market segment consistently accounts for over 80% of commercial property sales transactions and over 60% of the commission pool. The Company’s growth plan also includes further expansion into various specialty property types such as hospitality, self-storage, seniors housing and the Larger Transaction Market segment, as well as expansion of its financing division, Marcus & Millichap Capital Corporation.

Key factors likely to influence the Company’s business in 2018 include:

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These factors, in addition to the business’s typical transaction closing date variability, highlight the importance of viewing the Company’s business through a long-term, at least annual, perspective.

Conference Call Details

Marcus & Millichap will host a conference call today to discuss the results at 2:00 p.m. Pacific Time/5:00 p.m. Eastern Time. To participate in the conference call, callers from the United States and Canada should dial (877) 407-9208 ten minutes prior to the scheduled call time. International callers should dial (201) 493-6784. For those unable to participate during the live broadcast, a telephonic replay of the call will also be available from 5:00 p.m. Pacific Time/8:00 p.m. Eastern Time on Thursday, March 8, 2018, through 8:59 p.m. Pacific Time/11:59 p.m. Eastern Time on Thursday, March 22, 2018, by dialing (844) 512-2921 in the United States and Canada or (412) 317-6671 internationally and entering passcode 13674949.

About Marcus & Millichap, Inc.

Marcus & Millichap, Inc. is a leading national brokerage firm specializing in commercial real estate investment sales, financing, research and advisory services. As of December 31, 2017, the Company had over 1,800 investment sales and financing professionals in 78 offices who provide investment brokerage and financing services to sellers and buyers of commercial real estate. The Company also offers market research, consulting and advisory services to our clients. Marcus & Millichap closed 8,979 transactions in 2017, with a sales volume of approximately $42.2 billion. For additional information, please visit www.MarcusMillichap.com.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This release includes forward-looking statements, including the Company’s business outlook for 2018 and beyond and expectations for market share growth. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends affecting the financial condition of our business. Forward-looking statements should not be read as a guarantee of future performance or results and will not necessarily be accurate indications of the times at, or by, which such performance or results will be achieved. Forward-looking statements are based on information available at the time those statements are made and/or management’s good faith belief as of that time with respect to future events and are subject to risks and uncertainties that could cause actual performance or results to differ materially from those expressed in or suggested by the forward-looking statements. Important factors that could cause such differences include, but are not limited to:

In addition, in this release, the words “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” “predict,” “potential,” “should” and similar expressions, as they relate to our company, our business and our management, are intended to identify forward-looking statements. In light of these risks and uncertainties, the forward-looking events and circumstances discussed in this release may not occur and actual results could differ materially from those anticipated or implied in the forward-looking statements.

Forward-looking statements speak only as of the date of this release. You should not put undue reliance on any forward-looking statements. We assume no obligation to update forward-looking statements to reflect actual results, changes in assumptions or changes in other factors affecting forward-looking information, except to the extent required by applicable laws. If we update one or more forward-looking statements, no inference should be drawn that we will make additional updates with respect to those or other forward-looking statements.

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MARCUS & MILLICHAP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF NET

AND COMPREHENSIVE INCOME

(dollar and share amounts in thousands, except per share amounts)

(Unaudited)

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MARCUS & MILLICHAP, INC.

KEY OPERATING METRICS SUMMARY

(Unaudited)

Total sales volume was $12.3 billion for the three months ended December 31, 2017, encompassing 2,443 transactions consisting of $8.7 billion for real estate brokerage (1,752 transactions), $1.7 billion for financing (499 transactions) and $1.9 billion in other transactions, including consulting and advisory services (192 transactions). Total sales volume was $42.2 billion for the year ended December 31, 2017, encompassing 8,979 transactions consisting of $30.5 billion for real estate brokerage (6,562 transactions), $5.6 billion for financing (1,707 transactions) and $6.1 billion in other transactions, including consulting and advisory services (710 transactions). As of December 31, 2017, the Company had 1,723 investment sales professionals and 96 financing professionals. Key metrics for real estate brokerage and financing are as follows:

The following table sets forth the number of transactions, sales volume and revenues by commercial real estate market segment for real estate brokerage:

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MARCUS & MILLICHAP, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(dollar amounts in thousands, except per share amounts)

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MARCUS & MILLICHAP, INC.

OTHER INFORMATION

(Unaudited)

Adjusted EBITDA Reconciliation

Adjusted EBITDA, which the Company defines as net income before (i) interest income and other, including net realized (losses) gains on marketable securities, available-for-sale and cash and cash equivalents, (ii) interest expense, (iii) provision for income taxes, (iv) depreciation and amortization and (v) stock-based compensation. The Company uses Adjusted EBITDA in its business operations to evaluate the performance of its business, develop budgets and measure its performance against those budgets, among other things. The Company also believes that analysts and investors use Adjusted EBITDA as a supplemental measure to evaluate its overall operating performance. However, Adjusted EBITDA has material limitations as an analytical tool and should not be considered in isolation or as a substitute for analysis of the Company’s results as reported under U.S. generally accepted accounting principles (“U.S. GAAP”). The Company finds Adjusted EBITDA as a useful tool to assist in evaluating performance because Adjusted EBITDA eliminates items related to capital structure and taxes and non-cash stock-based compensation charges. In light of the foregoing limitations, the Company does not rely solely on Adjusted EBITDA as a performance measure and also considers its U.S. GAAP results. Adjusted EBITDA is not a measurement of the Company’s financial performance under U.S. GAAP and should not be considered as an alternative to net income, operating income or any other measures derived in accordance with U.S. GAAP. Because Adjusted EBITDA is not calculated in the same manner by all companies, it may not be comparable to other similarly titled measures used by other companies.

A reconciliation of the most directly comparable U.S. GAAP financial measure, net income, to Adjusted EBITDA is as follows (in thousands):

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Adjusted Net Income Reconciliation

During the three and twelve months ended December 31, 2017, the Company adjusted net income to exclude a one-time charge of $11.6 million in connection with the remeasurement of deferred tax assets, net as result of the enactment of the Tax Cuts and Jobs Act, which reduced the U.S. federal statutory corporate tax rate from 35% to 21%. A reconciliation of the most directly comparable U.S. GAAP financial measure, net income, to adjusted net income, excluding this one-time charge is as follows (in thousands):

Glossary of Terms

Certain Adjusted Metrics

Real Estate Brokerage

During the year ended December 31, 2016, we closed a large transaction in our real estate brokerage business in excess of $300 million. Following are actual and as adjusted metrics excluding this transaction:

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