Exhibit 99.1

ZILLOW GROUP REPORTS SECOND QUARTER 2015 RESULTS

Real Estate Revenue Up 37% Year-over-Year, Adjusted EBITDA of $21.0 Million

SEATTLE – August 4, 2015 – Zillow^® Group, Inc. (NASDAQ:Z), which houses a portfolio of the largest and most vibrant real estate and home-related brands on mobile and Web, today announced its consolidated financial results for the quarter ended June 30, 2015.

“Zillow Group had a strong second quarter, beating our own expectations for revenue and EBITDA,” said Zillow Group CEO Spencer Rascoff. “We’ve been very focused operationally on the integration of Trulia, and made great progress on a number of fronts. As with most mergers of any scale, it has required a great deal of time, attention and energy. We’re pleased to share today that we will have successfully combined all advertising products by the end of the third quarter, well ahead of the timetable we shared on our May 12th conference call. Most importantly, we believe the strategic rationale for the combination remains extremely strong, as we are already realizing benefits of our combined audience scale.”

Second Quarter 2015 Financial Highlights

Throughout this release, financial results are presented on both a reported and pro forma basis. Reported results were prepared in accordance with generally accepted accounting principles (GAAP). Pro forma results exclude items described in the reconciliation tables below and assume the February 2015 acquisition of Trulia occurred on January 1, 2014, the beginning of the comparable prior year reporting period. The pro forma results are presented in order to provide additional insights into the underlying trends in the business. Revenue and Adjusted EBITDA for the three months ended June 30, 2015 are presented in this release on an as reported basis.

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Operating and Business Highlights

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Quarterly Conference Call

A quarterly conference call to discuss Zillow Group, Inc.’s second quarter 2015 financial results and business outlook will occur today at 2 p.m. Pacific Time (5 p.m. Eastern Time) and will be webcast live. The live webcast of the conference call will be available on the investor relations section of Zillow Group, Inc.’s website at http://investors.zillowgroup.com. For those without access to the Internet, the call may be accessed toll-free via phone at 877-643-7152 with conference ID# 81815174. Callers outside the United States may dial 443-863-7921 with conference ID# 81815174. Questions submitted via Zillow Group, Inc.’s Twitter account (www.twitter.com/zillowgroup) using the hashtag #ZEarnings will be considered during the Q&A portion of the call, in addition to questions submitted by those dialed in. Following completion of the call, a recorded replay of the webcast will be available on the investor relations section of Zillow Group, Inc.’s website at http://investors.zillowgroup.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 that involve risks and uncertainties, including, without limitation, statements regarding our expectations related to integration of the Trulia acquisition and Zillow’s and Trulia’s agent advertising products. Statements containing words such as “may,” “believe,” “anticipate,” “expect,” “intend,” “plan,” “project,” “will,” “projections,” “continue,” “business outlook,” “estimate,” “outlook,” or similar expressions constitute forward-looking statements. Differences in Zillow Group’s actual results from those described in these forward-looking statements may result from actions taken by Zillow Group as well as from risks and uncertainties beyond Zillow Group’s control. Factors that may contribute to such differences include, but are not limited to, Zillow Group’s ability to successfully integrate and realize the benefits of our past or future strategic acquisitions or investments, including our February 2015 acquisition of Trulia; Zillow Group’s ability to maintain and effectively manage an adequate rate of growth; Zillow Group’s ability to maintain or establish relationships with listings and data providers; the impact of the real estate industry on Zillow Group’s business; Zillow Group’s ability to innovate and provide products and services that are attractive to its users and advertisers; Zillow Group’s ability to increase awareness of the Zillow Group brands; Zillow Group’s ability to attract consumers to Zillow Group’s mobile applications and websites; Zillow Group’s ability to compete successfully against existing or future competitors; the reliable performance of Zillow Group’s network infrastructure and content delivery processes; and Zillow Group’s ability to protect its intellectual property. The foregoing list of risks and uncertainties is illustrative, but is not exhaustive. For more information about potential factors that could affect Zillow Group’s business and financial results, please review the “Risk Factors” described in Zillow Group, Inc.’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2015 filed with the Securities and Exchange Commission, or SEC, and in Zillow Group’s other filings with the SEC. Except as may be required by law, Zillow Group does not intend, and undertakes no duty, to update this information to reflect future events or circumstances.

Use of Non-GAAP Financial Measures

To provide investors with additional information regarding our financial results, this press release includes references to certain pro forma financial results, Adjusted EBITDA and non-GAAP net income

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(loss) per share, all of which are non-GAAP financial measures. We have provided a reconciliation of pro forma Adjusted EBITDA to pro forma net loss, Adjusted EBITDA to net loss, the most directly comparable GAAP financial measure, and a reconciliation of net income (loss), adjusted, to net loss, as reported on a GAAP basis, and the calculations of non-GAAP net income (loss) per share - basic and diluted and pro forma weighted-average shares outstanding – basic and diluted, within this earnings release.

The pro forma financial results included in this press release, although helpful in illustrating the financial characteristics of Zillow Group under one set of assumptions, are not true historical financial results. They are provided for informational purposes and do not attempt to represent Zillow Group’s actual financial condition if the acquisition had been completed on the applicable dates of the financial statements presented herein or predict or suggest future results.

Adjusted EBITDA is a key metric used by our management and board of directors to measure operating performance and trends, and to prepare and approve our annual budget. In particular, the exclusion of certain expenses in calculating Adjusted EBITDA facilitates operating performance comparisons on a period-to-period basis.

Our use of Adjusted EBITDA has limitations as an analytical tool, and you should not consider it in isolation or as a substitute for analysis of our results as reported under GAAP. Some of these limitations are:

Because of these limitations, you should consider Adjusted EBITDA alongside other financial performance measures, including various cash flow metrics, net loss and our other GAAP results.

Our presentation of non-GAAP net income (loss) per share excludes the impact of share-based compensation expense, acquisition-related costs and restructuring costs. This measure is not a key metric used by our management and board of directors to measure operating performance or otherwise manage the business. However, we provide non-GAAP net income (loss) per share as supplemental information to investors, as we believe the exclusion of share-based compensation expense, acquisition-related costs and restructuring costs facilitates investors’ operating performance comparisons on a period-to-period basis. You should not consider these metrics in isolation or as substitutes for analysis of our results as reported under GAAP.

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About Zillow Group

Zillow Group (NASDAQ:Z) houses a portfolio of the largest real estate and home-related brands on mobile and Web. The company’s brands focus on all stages of the home lifecycle: renting, buying, selling, financing and home improvement. Zillow Group is committed to empowering consumers with unparalleled data, inspiration and knowledge around homes, and connecting them with the right local professionals to help. The Zillow Group portfolio of consumer brands includes real estate and rental marketplaces Zillow^®, Trulia^®, StreetEasy^® and HotPads^®. In addition, Zillow Group works with tens of thousands of real estate agents, lenders and rental professionals, helping maximize business opportunities and connect to millions of consumers. The company operates a number of business brands for real estate, rental and mortgage professionals, including Postlets^®, Mortech^®, Diverse Solutions^®, Market Leader^® and Retsly™. The company is headquartered in Seattle.

Please visit http://investors.zillowgroup.com, www.zillowgroup.com/ir-blog, and www.twitter.com/zillowgroup, where Zillow Group discloses information about the company, its financial information, and its business which may be deemed material.

The Zillow Group logo is available at http://zillowgroup.mediaroom.com/logos-photos.

Zillow, Postlets, Mortech, Diverse Solutions, StreetEasy, and HotPads are registered trademarks of Zillow, Inc. Retsly is a trademark of Zillow, Inc. Trulia is a registered trademark of Trulia, Inc. Market Leader is a registered trademark of Market Leader, Inc.

DotLoop is a registered trademark of DotLoop, Inc.

(ZFIN)

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Pro Forma Financial Information

The following pro forma financial information gives effect to the February 2015 acquisition of Trulia as if it were consummated on January 1, 2014, the beginning of the comparable prior reporting period (except Revenue and Adjusted EBITDA for the three months ended June 30, 2015, which are presented on an as reported basis) (in thousands, unaudited):

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The basic and diluted pro forma net loss per share is based on the weighted-average number of shares of Zillow Group common stock outstanding for the period presented and adjusted for the number of shares of Class A common stock issued in connection with the February 2015 acquisition of Trulia, assuming for the purposes of the unaudited pro forma condensed combined statements of operations that the closing date of the acquisition was January 1, 2014. The calculation of the number of shares used in the computation of pro forma basic and diluted net loss per share is as follows (in thousands):

The following table presents a reconciliation of pro forma Adjusted EBITDA to pro forma net loss for each of the periods presented (other than Adjusted EBITDA for the three months ended June 30, 2015, which is presented on an as reported basis) (in thousands, unaudited):

The following table presents our pro forma revenue by type for each of the periods presented (other than revenue for the three months ended June 30, 2015, which is presented on an as reported basis) (in thousands, unaudited):

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Reported Consolidated Results

ZILLOW GROUP, INC.

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands)

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ZILLOW GROUP, INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

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ZILLOW GROUP, INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

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Adjusted EBITDA

The following table presents a reconciliation of Adjusted EBITDA to net loss, the most directly comparable GAAP financial measure, for each of the periods presented (in thousands, unaudited):

Non-GAAP Net Income (Loss) per Share

The following table presents a reconciliation of net income (loss), adjusted, to net loss, as reported on a GAAP basis, and the calculation of non-GAAP net income (loss) per share - basic and diluted, for each of the periods presented (in thousands, except per share data, unaudited):

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Revenue by Type

The following tables present our revenue by type and as a percentage of total revenue for each of the periods presented (in thousands, unaudited):

Key Growth Drivers

The following tables set forth our key growth drivers for each of the periods presented:

Unique users source: Zillow measures unique users with Google Analytics and Trulia measures unique users with Omniture analytical tools. Beginning on February 17, 2015, the reported monthly unique users reflect the effect of Zillow Group’s February 17, 2015 acquisition of Trulia.

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