When developing and monitoring paid search campaigns, many marketers often overlook Google Business Profile (GBP) reviews. While the common belief is that reviews only impact SEO and Local Services Ads (LSAs), they can also affect your Traditional Google Ads campaign performance just as much, specifically if you have a large volume of positive reviews.
To gauge the overall effect of Google reviews on paid search performance, Ignite Visibility analyzed the GBP reviews of over 200 home service clients, finding a correlation between the total number of reviews and the clients’ search campaign conversion rates and conversion cost.
In this article, Andrew Snyder, VP of Paid Media, will provide an overview of the results of this study and look into the branded vs. non-branded impact of Google reviews for business profiles.
What Are GBP Reviews and Why They Matter
Google Business Profile reviews are customer reviews that appear specifically for businesses on Google, complete with star ratings on a scale of one to five.
Like reviews on other platforms, Google reviews can positively impact businesses’ performance by gaining people’s trust, building a local presence, and influencing decision-making among users to drive conversions.
With a high volume of positive Google business reviews, you’ll be able to connect to your audiences and supplement other paid search efforts.
TL;DR
This article will explore the following key takeaways:
- Google review volume is more important than review score in boosting performance
- Reviews have a stronger impact on brand conversion rate and non-brand cost per acquisition
- Reviews can improve paid search efficiency by acting as critical trust signals
Expert Insights into Google Reviews
When attempting to optimize paid search and SEO performance, one of the most important elements is Google business reviews through your GBP.
Here at Ignite, we looked at the reviews of many clients in the home services industry to determine precisely how they affect Google Ads performance. Specifically, we observed how review volume and score factored into paid search campaigns, with the ultimate takeaway being that volume, not score, had the biggest impact.
In the end, we found that more reviews translate to higher conversion rates and lower conversion cost, with some differences between branded vs. non-branded campaigns.
Let’s get more into the results of our research and their implications for your strategy.
Research Overview and Methodology
In our study, we looked at the paid search campaigns of over 200 home services clients from November 2025 to March 2026. The primary focus was Google Ads campaigns, excluding Local Service Ads (LSAs).
We also compared branded vs. non-branded strategies to better understand how audiences connect with businesses, depending on whether they’re familiar with the business when interacting with reviews.
Here were the conclusions we drew based on our research:
Key Finding #1: Review Volume Impacts Performance
The main finding was that Google review volume correlated with better Google Ads performance over time.
Specifically, accounts with active Google Business Profiles appeared to experience higher conversion rates as the number of reviews increased. Additionally, we found that conversion rates slowed when the review count became very high, highlighting the benefits of growth early on.
More reviews also subsequently led to lower cost per acquisition (CPA), as added social proof and perceived brand maturity likely boost post-click conversion efficiency.
Key Finding #2: Review Score Has Limited Impact
Conversely, our study concluded that review score doesn’t appear to have the same effect as volume.
While positive reviews could put businesses in a good light, we really found that it comes down to the total number of reviews when driving conversions.
When looking at review performance, we focused on reviews with an average 4.6 to 5-star rating, showing little correlation with performance. This low score variance reduces overall predictive power.
So, to reiterate, active Google Business Profiles benefit most from accumulating many reviews vs. a small number of positive ones, establishing brand maturity.
Branded vs. Non-Branded Performance Breakdown
As mentioned, we looked at branded and non-branded campaigns to discern how reviews affect each.
With branded campaigns, we observed a strong impact of reviews on conversion rate, with a slight decrease in cost per conversion.
In particular, we noticed that lower review counts led to higher cost variability, indicating that limited social proof actually increased conversion friction and costs.
The main conclusion here was that branded campaigns investing more in reviews helped reduce campaign costs with increased conversions over time.
On the other hand, non-brand campaigns saw a moderate lift in conversion rate with a considerably lower cost per conversion.
The results were especially noticeable during early-stage growth as active GBPs collected more reviews.
Businesses with higher review counts seemed to make their brands appear more legitimate to prospective customers, reducing uncertainty and leading to higher conversions through cold traffic.
Based on these comparisons, it would appear that branded campaigns benefit from higher overall conversions, while non-branded campaigns see lower costs due to reduced conversion friction.
Why Review Volume Drives Performance
Based on the data we gathered, the following are our main takeaways:
- Social proof increases trust among audiences, causing them to engage more readily
- A high number of reviews signals brand maturity in the early growth stage, helping brands stand out from competitors
- High review counts improve post-click conversion efficiency, as audiences are more likely to view brands as reputable and trustworthy
Behavioral Insights: Brand vs. Non-Brand Users
Now, let’s consider how reviews influence branded and non-branded audiences based on their thought process.
Brand users are already familiar with your business, having likely come across your brand and learned more about it and your offerings. For these audiences, a high number of positive reviews will reinforce their growing trust and lead to higher conversion rates.
Meanwhile, non-brand users who are unfamiliar with your business will turn to reviews to establish credibility, which will ultimately drive more post-click conversions and reduce your CPA.
All in all, these points further illustrate the need for a high volume of GBP reviews, whether targeting brand or non-brand users.
Reviews as a Conversion Multiplier
As our research indicates, reviews don’t merely boost click-through rate (CTR); they also improve conversion efficiency after the click.
When people come to trust your brand based on the number of reviews, they’ll be far more inclined to do business with you.
As such, the impact of an active GBP with many reviews can go a lot farther than many on-platform optimizations. Not to discount on-page SEO, high-quality content, and other key strategies, but having your GBP as a central hub on Google is invaluable in maximizing conversions and ROI.
Limitations and Caveats
While our study helped realize the intrinsic value of a high Google review count, there are some limitations to keep in mind.
For one, this was an observational study that found a correlation, not necessarily causation, between the number of reviews and conversion rates.
Also, cross-vertical variation is another consideration here, as budgets, target markets, brand strength, and campaign seasonality can all factor into review performance.
In addition, different brands might have different definitions for conversions, e.g., phone calls, form submissions, sales, or signups, which can also influence results.
Actionable Recommendations
If you want to reap the rewards of Google reviews, here are some key steps to take:
Prioritize Review Acquisition
One of the most important actions is to gather as many reviews as you can for your GBPs. Although having a few positive reviews is good, you’ll be able to maximize conversions early on if you get a large number of reviews from the start.
Just be sure that review requests are high-quality and comply with your company policies.
Using a Google review calculator, you’ll also be able to determine how many high ratings you’ll need to reach your target and gauge brand sentiment among reviewers.
Ask Every Satisfied Customer
Are your customers happy with your products or services? Ask them to leave an honest review on your GBP, complete with a link for added convenience.
Automate Review Requests
You can also simplify the review process with automated reminders. Send these via SMS text messages or emails, kindly requesting reviews after a purchase.
Respond to All Reviews
When a customer sees that a business owner responds to their customers, they will be more likely to share their feedback, too.
Responding to positive reviews shows that you value your customers and appreciate that they took the time to complete the survey.
Being responsive also extends to complaints and criticisms.
According to the Harvard Business Review, businesses that responded to negative reviews received a higher rating than those that ignored them.
If you receive a one or two-star review, take the time to offer a thoughtful response and present a solution. That said, if you say you’ll make a change, you need to follow through.
Address any complaints right away and aim to move the conversation to an email or a phone call. This way, prospective customers will see that you care about customer concerns, but they won’t get a front row seat to an angry public conversation.
Maintain GBP Accuracy
Another way to get the best results from your GBP and reviews is to keep all of your information accurate across locations.
Each GBP should have a consistent name, address, and phone number (NAP) that matches the information on your site and other platforms.
Also, update business hours, descriptions, products, and services as needed, especially if they vary from location to location.
You can also keep your GBP more active by publishing Google Posts, covering topics like company-wide announcements, new business openings, and local events.
Remember, a well-optimized and properly configured GBP can also help you show up in local searches for the Google Map Pack, along with Google’s AI Overviews and AI Mode results, supplementing other SEO efforts.
FAQs
1. Do Google reviews affect Google Ads performance?
Research shows that a high volume of Google business reviews can positively affect Google Ads click-through and conversion rates, more so than review scores. People will view your brand as more credible with many reviews backing it, which can lead to more ad clicks and, ultimately, lower cost per conversion.
2. Is review score or review volume more important?
When it comes to paid search performance, review volume has a more direct impact. A high volume of reviews indicates both social proof and brand maturity, which can lead to more conversions among both brand and non-brand users, as reviews assure people that you’re credible and trustworthy compared to competitors.
3. How do reviews impact conversion rate?
Google business reviews can lead to more post-click conversions as audiences perceive your brand as more reputable if you have a high volume of positive reviews, particularly among audiences who are already familiar with your brand.
4. Do reviews help non-brand campaigns?
Yes, Google reviews for business profiles can help convert more non-brand users by encouraging them to trust you over less reputable competitors, particularly if you have many positive reviews among existing customers.
5. How can I get more Google reviews?
You can increase the number of reviews on Google by asking satisfied customers to provide feedback, automating reminders to leave a review through SMS and email, and replying to reviews with thoughtful, in-depth responses that drive more engagement.
Get the Most From Google Reviews With Ignite Visibility
Our research found that getting plenty of reviews from customers is one of the best ways to boost paid search performance, but it can be difficult to build and manage GBPs and reviews on your own. Even with the help of a Google review calculator, gathering and managing a large number of reviews can quickly become daunting, especially if you’re focusing on growing your core business.
Enter the experts at Ignite Visibility, who can give your GBP and paid search campaigns the lift they need to drive conversions and ROI in the long term.
With our services backing your brand, you can:
- Develop and configure a high-performance Google Business Profile
- Build multiple profiles for multi-location businesses
- Regularly acquire customer reviews with automated processes
- Respond to reviews to further boost GBP activity
- Keep all GBP information accurate and current
- Incorporate your GBP into a comprehensive paid search and SEO strategy
- And more!
To learn more about what we can do for your business, take a look at our PPC services and how we can fully optimize GBP performance as part of a complete strategy.
