# Sold by Data > Sold by Data matches San Diego home sellers with listing agents based on objective, verified MLS performance data. Not reviews, referrals, or self-reported claims. The service is free for sellers; agents pay Sold by Data a referral fee only if the home closes. Sold by Data ranks San Diego listing agents using five metrics pulled directly from closed MLS transaction records: Price Alpha (sale price vs. market, using original list price), DOM Alpha (days on market vs. comparable homes, cumulative across relisting attempts), Failure Rate (percentage of listings that expired or were withdrawn without selling), Local Knowledge (closed transactions in a specific zip code), and Experience (total career closings). No agent can submit or edit their own numbers. Sellers request a free report for their zip code and property type. They receive matched agent data by email within two business days. ## Site - [Homepage](https://www.soldbydata.com/): Overview of the service, the five ranking metrics, and the free report request form. - [Blog](https://www.soldbydata.com/blog): Articles on choosing a listing agent, reading agent performance data, and San Diego market/commission topics. ## Blog posts - [How to Find a Real Estate Listing Agent in San Diego](https://www.soldbydata.com/blog/how-to-find-a-real-estate-listing-agent-in-san-diego): What to look for in a listing agent, including verifiable performance metrics. - [What Expired Listings Actually Tell You](https://www.soldbydata.com/blog/what-expired-listings-actually-tell-you): How to interpret an agent's expired-listing history when evaluating them. - [Referrals Are Great, Proof Is Better](https://www.soldbydata.com/blog/referrals-are-great-a-good-start): Why referral-based agent selection is a starting point, not a full evaluation. - [Do San Diego Home Sellers Still Have to Pay the Buyer's Agent in 2026?](https://www.soldbydata.com/blog/do-san-diego-sellers-pay-buyer-agent-commission-2026): Explains post-NAR-settlement commission rules for San Diego sellers specifically.