Zillow Group, founded in 2006, is a real estate technology company operating the most-visited real estate websites in the United States. Its platforms connect hundreds of millions of consumers with data, technology, and professionals across the home lifecycle, encompassing real estate, rental housing, mortgage lending, and home improvement.
The company's technology stack is built around several core domains: real estate data analysis, home valuation algorithms, web and mobile platform development, marketing software solutions, and online mortgage lending technology. A prominent product is the Zestimate, a proprietary home value estimator that provides consumers with market information. The company also operates Zillow Home Loans, a national online mortgage lending service, and offers a suite of marketing software tools for real estate professionals.
Zillow Group's operations are concentrated in the United States, where it serves as a primary digital destination for consumers and professionals in the housing market. Its engineering work supports large-scale data processing and platform development to handle significant consumer traffic and transaction volume.






