Your Google Business Profile category is a small field with outsized local-AI-visibility leverage, because it's one of the clearest machine-readable statements of what your business actually is. Assistants that lean on Google's local data — Gemini and AI Overviews most directly, and others indirectly — use category to decide which queries you're even eligible for: pick general contractor when buyers search for a kitchen remodeler and you may never enter the consideration set for the query that matters. The move that works is choosing the most specific primary category that genuinely describes your core service, adding accurate secondary categories for your real additional services, and keeping that classification consistent with how you describe yourself on your site and in your schema. Don't category-stuff with services you don't offer — mismatched categories read as noise and can misfile you. Category won't beat reviews or citations on its own, but it's the gate that decides which shortlists you're allowed onto, which makes getting it right one of the highest-leverage quick fixes in local AI visibility.
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