It is one of the most common questions I get from newer businesses: "I only have a handful of reviews. Is it too early to advertise?" There is no fixed number that answers it. But there is a clear way to think about it, and it starts with what the customer actually sees.
Say a roofing company runs an ad. Someone with a leak clicks it, and before they call, they look the company up. They find a Google profile with three reviews, the newest from last year. Right next to it on the map are two competitors with dozens of recent reviews and replies from the owner.
The ad did its job. It got the click. What happens next depends on whether that person trusts what they find. Three old reviews do not say "bad company." They say "not sure," and a customer with water coming through the ceiling does not want to be unsure.
Ads buy attention, not trust. Trust is built on the profile and the site the ad sends people to.
Google Local Services Ads are the listings with the Google verification badge at the top of many local searches. With these, reviews are not only something the customer reads. Google says the ad ranking considers things like your review score and number of reviews, how responsive you are to customers, and your proximity to the customer.
Responsiveness matters here in a practical way. If calls from the ads go unanswered, that can count against you. A business with few reviews that also misses calls is fighting two ranking signals at once. I explain the rest of how these ads work in how Google Local Services Ads actually work.
On Facebook and Instagram, reviews do not affect how the ad is delivered in the same way. But the behaviour after the ad is the same. People see the ad, then look the business up on Google or visit the site. If what they find is thin, many of them stop there. So the question is less "can I run the ad" and more "where does the ad send people, and is that place convincing."
Customers read reviews in three ways at once, usually without thinking about it:
Your replies are part of this too. A calm, specific reply to each review, including the unhappy ones, shows someone is paying attention.
The way to get more reviews is not a campaign. It is a habit that runs after every job:
Say a cleaning company finishes a move-out clean. That afternoon the customer gets a short message thanking them and asking for a review, with the link. That is the whole system. The hard part is doing it every single time, which is why it helps when it does not depend on someone remembering. The review request workflow in the Growth plan of Live In Seven CRM sends that request after each finished job.
This is where businesses get into real trouble, sometimes without meaning to. Google's policies prohibit fake engagement, and that covers more than obvious fake reviews:
Google can remove reviews and restrict profiles that break these rules. Separately, the Federal Trade Commission's rule on consumer reviews and testimonials bans fake reviews and buying reviews, and it can carry civil penalties. A few fake reviews are not worth risking the profile or a federal problem.
Few reviews does not always mean "don't advertise." It means two things happen in parallel: you fix the review habit so the number grows every week, and you choose carefully where the ad sends people.
If the ad sends people to your Google profile or runs as a Local Services Ad, a thin review count will hold it back more. If it sends people to a strong page on your site with clear services, real photos and a way to call, the ad has more to work with while the reviews catch up. And if calls from the ads will go to voicemail, fix that before spending anything.
Reviews are also a big part of Local SEO, so the habit pays twice: once for the ads, once for showing up in the map without paying for it.
If you want an honest read on your own case, tell me your trade and your towns. I will look at your profile, your reviews and your site, and tell you whether I would start ads now or fix something first.
Tell me the trade and the towns you cover. I will tell you what I would do first.