Direct answer
A local business website usually loses Google rankings for one of four reasons: a Google algorithm update that changed how quality is assessed, technical problems like broken pages or slow load times, an incomplete or inactive Google Business Profile, or new competitors that simply outranked you with stronger content and reviews. Diagnosing which one applies determines the fix, so a rankings audit should check all four before making changes.
Rule out the technical causes first
Before assuming the drop is due to competition or an algorithm change, check whether something on the site itself broke. This is the most common cause and the easiest to fix.
Broken pages or redirects. A recent site change, plugin update, or migration can quietly break URLs that were previously ranking.
Slow load times. Page speed is a ranking factor. A site that has slowed down due to added plugins or unoptimized images can lose ground gradually.
Accidental noindex tags. A setting left on from a staging environment or a plugin misconfiguration can tell Google not to index pages that should be ranking.
Mobile usability issues. Since most local searches happen on mobile, a page that renders poorly on a phone is directly penalized in rankings.
Algorithm updates: what actually changed
Google rolls out core algorithm updates several times a year, and these updates generally reward genuinely helpful, well-organized content and penalize thin or repetitive pages. A ranking drop that coincides with a known update, and affects several pages at once rather than just one, points to a content quality issue rather than a technical one. The fix is usually to strengthen existing content with real detail and clear structure, not to publish more pages.
Your Google Business Profile matters more than most owners realize
For local searches specifically, the map pack often gets more clicks than the organic results below it. An inactive profile, unanswered reviews, outdated hours, or missing photos can quietly cost local visibility even while the website itself ranks fine organically. Checking and refreshing the Google Business Profile is one of the fastest ways to recover local visibility, often faster than any change made to the website itself.
A short audit checklist
Once the cause is identified, the fix is usually straightforward: repair what is broken, strengthen thin content with real detail, bring the Google Business Profile back to full activity, and check what competitors who now outrank you are doing differently. Recovery is rarely instant, most fixes take a few weeks to fully reflect in rankings, but a clear diagnosis prevents wasted effort chasing the wrong cause.
Summary
A dropped local ranking is almost always traceable to a technical break, an algorithm update, an inactive Google Business Profile, or stronger competitors, usually more than one at once. A short audit across all four narrows down the real cause quickly, rather than guessing and making the wrong fix first.