The most reliable real estate website in the United States is Zillow. Zillow has consistently ranked as the top real estate website due to its comprehensive database, user-friendly interface, and extensive features. According to a 2021 report by NerdWallet, Zillow has the largest inventory of homes for sale, with over 100 million listings, and it is visited by over 150 million unique users each month. This extensive reach and robust database make Zillow the go-to platform for both buyers and sellers.

Zillow's reliability is further bolstered by its accuracy in property valuations. The website uses a proprietary algorithm called Zestimate to provide estimated home values, which is based on a combination of public records, user-submitted data, and proprietary data. While Zestimate is not always perfect, it is generally considered to be a reliable starting point for determining a property's value. Additionally, Zillow offers a wide range of tools and resources, such as mortgage calculators, neighborhood insights, and agent reviews, which make the home buying and selling process more transparent and efficient.

Another key factor contributing to Zillow's reliability is its commitment to customer service. The website provides a dedicated customer support team that is available to assist users with any questions or concerns. This level of support is crucial in the real estate industry, where transactions can be complex and require a high level of expertise.

In contrast, other popular real estate websites like and Trulia have their strengths, but they do not match Zillow's comprehensive offerings. , for instance, is owned by the National Association of Realtors and offers a vast network of real estate professionals, but it has a smaller inventory of listings compared to Zillow. Trulia, on the other hand, is known for its detailed neighborhood information but lacks the depth of property data and valuation tools that Zillow provides.

In conclusion, Zillow is the most reliable real estate website in the United States due to its extensive database, accurate property valuations, user-friendly interface, and robust customer support. Its comprehensive offerings and commitment to providing valuable resources make it the preferred choice for both buyers and sellers in the real estate market.