ZILLOW GROUP INC

Note 13. Revenue and Contract Balances

We recognize revenue when or as we satisfy our performance obligations by transferring control of the promised products or services to our customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those products or services. See Note 2 in the Notes to the Consolidated Financial Statements in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023 for additional information on our revenue from contracts with customers and contract balances.

Disaggregation of Revenue

The following table presents our revenue disaggregated by category for the periods presented (in millions):

Contract Balances

Contract assets totaled $148 million and $90 million as of September 30, 2024 and December 31, 2023, respectively. As of September 30, 2024, the average remaining recognition period for our contract asset related to our Premier Agent Flex offering isfive months.

For the three months ended September 30, 2024, the opening balance of deferred revenue was $59 million, of which $51 million was recognized as revenue during the period. For the three months ended September 30, 2023, the opening balance of deferred revenue was $49 million, of which $46 million was recognized as revenue during the period.

For the nine months ended September 30, 2024, the opening balance of deferred revenue was $52 million, of which $50 million was recognized as revenue during the period. For the nine months ended September 30, 2023, the opening balance of deferred revenue was $44 million, of which $43 million was recognized as revenue during the period.