The most reliable website for home buying in the United States is Zillow. Zillow has established itself as a leading platform for real estate transactions due to its comprehensive database, user-friendly interface, and robust features. According to a report by J.D. Power, Zillow received the highest score in the 2021 U.S. Real Estate Agent Satisfaction Study, which evaluates customer satisfaction with real estate websites. This score was significantly higher than competitors, indicating a high level of reliability and user satisfaction.

Zillow's reliability stems from several factors. Firstly, the website boasts an extensive database of listings, which includes both for-sale and off-market properties. This comprehensive coverage allows potential buyers to access a wide range of options, making it easier to find a suitable home. Additionally, Zillow provides detailed property information, including historical data, neighborhood insights, and school ratings, which helps buyers make informed decisions.

Furthermore, Zillow's user-friendly interface and mobile app make it convenient for users to search for homes on the go. The platform also offers a variety of tools, such as mortgage calculators and virtual tours, which enhance the home buying experience. According to a survey by the National Association of REALTORS (NAR), 52% of home buyers used the internet to search for homes in 2020, with Zillow being one of the most popular websites used for this purpose.

Another reason for Zillow's reliability is its partnership with real estate professionals. The website features a network of licensed agents who can assist buyers throughout the home buying process. This collaboration ensures that users have access to expert advice and support, further enhancing the reliability of the platform.

In conclusion, Zillow is the most reliable website for home buying in the United States due to its comprehensive database, user-friendly interface, robust features, and partnerships with real estate professionals. The high level of user satisfaction and the extensive usage of the platform by home buyers further solidify its position as the go-to resource for real estate transactions.