Google Possum Update (1 September 2016): What Changed and How to Recover

The Google Possum update was an unconfirmed local search update that reshuffled the local pack, Local Finder and Google Maps from around 1 September 2016. It did not delete businesses from Google: it filtered many of them out of local results, especially listings that shared an address or a category with a competitor. If your map pack visibility fell sharply in early September 2016 while your organic rankings held steady, Possum is the most likely cause.

This article is part of my full list of Google algorithm updates. Possum matters more than its age suggests, because the local filtering it introduced still shapes who appears in the map pack today.

What the Possum update changed

Possum changed how Google filtered local listings. Before September 2016, Google’s local duplicate filter mainly caught listings that shared a phone number or website. Possum expanded that filter to listings that were physically close to each other. Two businesses in the same building, in the same category, suddenly looked like duplicates to Google, and usually only one of them was shown for a given search.

The second change was that the searcher’s physical location carried more weight. The same query typed from two streets apart could return a different local pack. Organic results were largely unaffected, which is one of the clearest ways to recognise a Possum loss.

The name came from local SEO Phil Rozek. Listings looked as if they had disappeared, but they were still there if you searched for the business name or zoomed in on the map. They were only playing possum.

Timeline

Who was affected

The research that defined Possum came from Joy Hawkins and BrightLocal. They tracked 14,242 keywords for 1,307 businesses and found that 64% of them changed between 31 August and 7 September 2016. That is a very large share for a local update, and it explains why so many business owners noticed it.

The businesses that suffered most, as reported by local SEOs, were:

• Practices in shared buildings, such as several dentists, lawyers or accountants in one office block or medical centre.
• Businesses sharing an address with a competitor in the same Google Business Profile category.
• Practitioners listed separately from their practice, where both listings competed for the same searches.
• Businesses whose rankings depended on searchers being close to them, now that the searcher’s location counted for more.

Not every change was a loss. A 64% change rate means listings moved in both directions, and businesses that stood alone in their category on their street had less to fear from the expanded filter.

How to tell if the Possum update hit your site

Search Console and Business Profile data from 2016 are long gone for most businesses, so think of this as how you would spot the Possum pattern today. It is the same filtering behaviour, and I still see it on audits.

1. Compare local and organic. If organic rankings for your main service query are stable but your map pack position has gone, a local filter is more likely than a quality problem.
2. Search your own business name. If your listing appears for a branded search but not for "dentist near me" or "family lawyer Karachi", it exists but is being filtered.
3. Zoom the map. Filtered listings often reappear when you zoom closer on Maps. That is the possum effect in one test.
4. Check who shares your address. Look for competitors at the same address or in the same building with the same primary category. The one Google shows is usually the one with stronger overall signals.
5. Rank from several points. Use a local rank grid or manual searches from different locations. A ranking that is strong next to your office and absent a kilometre away reflects proximity, not a penalty.
6. Look for your own duplicates. Old listings, practitioner listings and moved-address listings can filter your main profile out.

How to recover from the Possum update

Google never published recovery advice for Possum, because it never confirmed the update. What follows is standard local SEO practice that addresses the filter directly.

Two cautions. First, do not try to beat the filter by keyword-stuffing your business name. It breaks Google’s guidelines and invites suspension. Second, you cannot change where the searcher stands. Proximity is a factor you work with, not against, so focus on being the strongest listing in your immediate area.

Some businesses that were filtered by Possum regained visibility after the Hawk update in August 2017, which narrowed the proximity filter. Businesses in the very same building could still be filtered, though, so distinct, well-supported listings remained the answer. If you want help with this, my local SEO services cover Business Profile clean-up, citations and location pages.

Is it still relevant today?

Yes, in practice. Local filtering of near-duplicate listings is still part of Google’s local results, so the problems Possum exposed still cost businesses map pack visibility. What is not documented is the update itself: Google has never described Possum or Hawk, and it does not list them among its ranking systems. Treat the names as labels for an observed behaviour rather than as official systems.

Frequently asked questions

Sources

• Keywords Everywhere: Possum update
• Search Engine Land: the Hawk local algorithm update
• Search Engine Land: Google algorithm updates library
• Ignite Visibility: Google update history

If your map pack visibility dropped and you suspect a local filter rather than a penalty, request a free audit. My SEO audit checks your Business Profile, duplicate listings, citations and location pages, and tells you which listing Google is choosing and why.