What Was the Google Possum Update?
Possum was an unannounced September 1, 2016 change to Google's local filter that diversified the local pack by suppressing businesses sharing an address or affiliation, and boosted results outside strict city limits.
Explain It Like I'm 5
Possum was Google playing fair referee in 2016: if five lawyers all worked from the same office, only one could stand in the spotlight line-up. And businesses just outside city borders stopped being invisible to city searches.
Understanding the Possum Update
On September 1, 2016, local search practitioners observed a massive local algorithm change they named Possum (credit for the name goes to consultant Phil Rozek, noting that filtered listings were playing possum: hidden, not gone). Google never announced or confirmed it.
The dominant effect was aggressive filtering of the local pack and Local Finder: businesses sharing an address or affiliation with an already-listed business were suppressed from the visible three-pack, though still findable when searched by name. One listing per unique address became the working rule for pack visibility.
Two further effects mattered: businesses physically outside city limits began ranking for that city's queries, loosening the strict centroid bias, and results diversified across keyword variants of the same service, giving slightly different packs for related phrasings.
The strategic consequences: legitimate multi-practitioner and multi-brand businesses needed distinct addresses or consolidation, service-area businesses gained reach beyond municipal borders, and visibility audits had to account for variant-query filtering.
Types of Possum Update
Address Filtering
One business per unique address visible in the pack per query.
Example: Four attorneys at one address: one in the pack, three filtered but name-searchable.
Affiliation Filtering
Brands sharing ownership or a site being filtered together.
Example: A second practice brand on the same website suppressed alongside the primary.
Why Possum Matters
Possum defined how the local pack handles co-located and affiliated businesses. Multi-location and multi-brand strategies still navigate rules it set in 2016.
Best Practices
One Strong Listing Per Address
Consolidate co-located brands or separate addresses. Duplicated-address listings split signals and trigger filtering.
Audit Visibility Across Query Variants
Possum diversifies packs by phrasing. Track keyword variants, not just one canonical local query.
Optimize for Service Areas, Not Just City Pins
Out-of-limit businesses can and do win city queries. Set service areas accurately and build relevance beyond the pin.
Search by Name to Confirm Filtering
A suppressed listing often still ranks for its exact name. Name-search checks distinguish filtering from suspension.
Common Mistakes
Fighting the filter with more listings
Fix: Extra listings for the same business violate guidelines and risk suspension. The fix is consolidation or genuine separation.
Panicking when a listing vanishes from the pack
Fix: Check name searches and variant queries first. Possum filtering hides listings from packs, not from existence.
Ignoring variant-query tracking post-2016
Fix: One keyword tells you almost nothing about local visibility now. Packs differ across phrasings by design.
How WPLink Helps Multi-Location Sites
For businesses with several locations or brands, WPLink keeps each location page internally linked and authoritative, so the listings that do surface in the pack point at strong, connected pages.
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