Google's local algorithm: what reviews are and how they affect your ranking
Understand how the Google Maps algorithm works for local businesses and why reviews are one of the most decisive factors for appearing in top results.
What is Google's «local pack»?
When you search for «plumber in London» or «pizza near me», Google shows a special block with 3 highlighted businesses before the regular web results. This is called the Local Pack.
Appearing there is the equivalent of being on the first page of results. The three businesses in the local pack receive between 44% and 60% of all clicks from that search.
The 3 pillars of Google's local algorithm
1. Relevance
Does your business do what the user is searching for? Google cross-references your listing categories, keywords in your description and terms appearing in your reviews.
2. Proximity
How close is your business to the user searching? Google prioritises businesses physically closest to the search location.
3. Prominence
How well-known and valued is your business? This is the factor where reviews carry the most weight.
Prominence is calculated from:
- Total number of reviews
- Average rating (★)
- Frequency and recency of reviews
- Business responses to reviews
How reviews affect ranking
Volume matters more than perfection
A business with 4.6★ and 200 reviews will consistently outrank one with 4.9★ and 20 reviews. Google interprets volume as a trust signal and evidence of genuine activity.
Recency is an active factor
A review from 3 years ago carries less weight than one from last week. Google rewards businesses that continue receiving reviews consistently. Review gathering must be an ongoing process, not a one-off campaign.
Keywords in reviews help local SEO
When a customer writes «best sushi in Manchester» or «sports physiotherapist in Edinburgh» in their review, those keywords reinforce your relevance for those searches.
Owner responses also count
Responding to reviews (both positive and negative) is an activity signal that Google values positively.
Reviews as a competitive advantage
Many local businesses don't have an active review strategy. If you do, you can quickly outrank competitors who've been in the market longer.
Common case: a restaurant open for 10 years with 40 accumulated reviews vs. one open for 1 year with an active system and already 120 reviews. The second one ranks higher on Google Maps.
What doesn't work (and can hurt you)
Buying fake reviews: Google has algorithms to detect inauthentic patterns. They can remove reviews, penalise your profile or remove you from the local pack.
Reviews from employees or family: same risk.
Conclusion
Google Maps rewards businesses with many real, recent and varied reviews, that respond to customers and stay active.
An active review system can completely change your local visibility within months.
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