UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): May 31, 2012

ZILLOW, INC.

(Exact name of registrant as specified in its charter)

(206) 470-7000

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On May 31, 2012, Zillow, Inc., a Washington corporation (“Zillow”), through its wholly owned subsidiary, Renegade Acquisition, Inc., a Delaware corporation (“Merger Sub”), consummated its acquisition of RentJuice Corporation, a Delaware corporation (“RentJuice”), pursuant to an Agreement and Plan of Merger (the “Merger Agreement”) by and among Zillow, RentJuice, Merger Sub and Shareholder Representative Services LLC, acting as the stockholder representative, dated May 2, 2012. Under the terms and subject to the conditions of the Merger Agreement, Merger Sub merged with and into RentJuice with RentJuice remaining as the surviving company and a wholly owned subsidiary of Zillow (the “Merger”).

The total Merger consideration payable to RentJuice equity holders is approximately $40 million in cash, less certain transaction expenses and other costs. All vested options to purchase shares of RentJuice’s common stock were cancelled and, in settlement of such cancellation, the holders of such options will receive cash payments representing a portion of the Merger consideration as described in the Merger Agreement. A portion of the Merger consideration has been attributed to the substitution of unvested stock options of RentJuice outstanding as of the closing for stock options to purchase shares of Zillow’s Class A common stock at an exchange ratio implied by the Merger consideration as described in the Merger Agreement. In connection with the closing, approximately $4 million of the purchase price otherwise payable to RentJuice stockholders and holders of vested stock options will be deposited in a third-party escrow account to secure certain indemnification obligations of those equity holders.

Pursuant to the terms of the Merger Agreement, Zillow will establish a retention bonus plan pursuant to which restricted stock units for 280,978 shares of Zillow’s Class A common stock will be granted to employees of RentJuice who accepted employment with Zillow in proportion to each employee’s total equity holdings in RentJuice prior to the closing of the Merger. Twenty-five percent of each restricted stock unit award will vest on the one-year anniversary of the closing of the Merger and the remainder will vest in substantially equal installments each three-month period thereafter for the next three years, subject to the recipient’s continued full-time employment or service to Zillow.

The foregoing description of the Merger and Merger Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Merger Agreement, a copy of which was filed as Exhibit 2.1 to the Current Report on Form 8-K filed by Zillow with the Securities and Exchange Commission on May 2, 2012 and is incorporated herein by reference.

A copy of the press release issued by Zillow on June 1, 2012 regarding the closing of the Merger is filed as Exhibit 99.1 hereto, and is incorporated herein by reference. The information in this Item 7.01 of Current Report on Form 8-K, as well as Exhibit 99.1, shall not be treated as “filed” for purposes of Section 18 of the Exchange Act, nor shall it be deemed incorporated by reference in any filing under the Securities Act.

(a) Financial Statements of Business Acquired.

Financial statements of RentJuice for the periods specified in Rule 3-05(b) of Regulation S-X are not included in this report, and will be filed with the Securities and Exchange Commission not later than August 14, 2012.

(b) Pro Forma Financial Information.

Pro forma financial information required pursuant to Article 11 of Regulation S-X is not included in this report, and will be filed with the Securities and Exchange Commission not later than August 14, 2012.

(d) Exhibits.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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EXHIBIT INDEX

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