How Google's Local Services Ads Pre-Filter Businesses Before the Auction Begins

This article explains the hidden decision-making process behind Google Local Services Ads (LSAs). It argues that before a business appears in LSA results, Google must solve three problems: determining the customer's location, identifying the most relevant business match, and establishing trustworthiness. The piece presents a mental model showing that businesses don't just compete in the LSA auction — they first compete to become eligible for it. The article uses the example of a homeowner searching for an emergency plumber to illustrate how Google's algorithms pre-filter candidates based on location relevance, service matching, and credibility signals before any ad auction takes place.