Ask on the day, every time
The best moment to ask is while the customer is still looking at the finished car or the clean pool. Wait a week and the feeling has gone, along with your review.
The company with 200 reviews and the one with 5 are not competing.
Nobody can see your work before they book. All they can compare is what other people said about it. That is why a nine year old business with a handful of reviews gets scrolled past by a two year old business with two hundred, even when the older one does the better job. Reviews are not a vanity metric, they are the deciding factor in local search. The ask goes out through the booking system that already has their details.
Five parts of the system, each built around the way customers actually leave reviews.
The best moment to ask is while the customer is still looking at the finished car or the clean pool. Wait a week and the feeling has gone, along with your review.
A direct link straight to the review box, sent by text. Every extra step you add loses you a percentage of the people who genuinely meant to do it.
The request goes out on its own. The reply to a five star review should still come from you, because people read those replies.
A short check in before the public request gives an unhappy customer somewhere to complain that is not Google, and gives you the chance to fix it.
Review count, review recency and the words inside them all feed the local map pack. A steady trickle beats a burst every time.
More than the competitor ranking above you, and more recently. There is no magic number, but a business with under twenty reviews in a competitive area is fighting uphill.
No. Fake reviews get detected, removed and can get the whole profile suspended. Everything here is about making it easy for real customers to leave real ones.
Reply calmly, in public, once. Most people judge you on the reply rather than the complaint, and a profile with only perfect reviews reads as suspicious anyway.
If the company with the most reviews keeps winning, let's build the system that puts you at the top of that list.