Of the 471 companies ranked on this site, a flat 38% hold a perfect five-star average. If a perfect score were rare, it would mean something. At better than one in three, it mostly means the company is new.
The math nobody shows you
A five-star average is a ratio, and ratios hide their denominator. Of the 140 companies sitting at exactly 5.0, 76 of them — more than half — have fewer than 25 reviews. A handful of happy neighbors produces the same number on the screen as a decade of consistent work. The screen does not distinguish between them. You have to.
The median company in this dataset has 34 reviews. That is the honest middle of the Phoenix landscaping market: a real business with a real history, but not an enormous one. Against that backdrop, a 5.0 with nine reviews is not evidence of excellence. It is an absence of evidence.
What a bad rating actually looks like
Here is the part that surprises people: only 36 of 373 companies rate below 4.0. Fewer than one in ten. Online reviews for home services skew heavily positive — unhappy customers often call the contractor instead of posting, and plenty of shops ask only their satisfied customers to leave a review.
The practical consequence: rating alone barely separates anyone. Almost everyone is somewhere between 4.3 and 5.0. If you sort a list by stars, you are mostly sorting by who has the fewest reviews. That is the opposite of what you want.
How this site handles it
Every score here is pulled toward the pool average of 4.66 in proportion to how thin the review history is — the standard Bayesian adjustment. A 5.0 from six customers lands near the average, because six customers is not much evidence. A 4.8 from four hundred barely moves, because four hundred customers is a great deal of evidence. Companies with fewer than five reviews are not ranked at all; that removed 68 businesses, plus 21 more with no rating on file.
The effect is simple to describe: sustained quality at volume beats a tiny perfect record, without burying a good small crew that is genuinely earning its stars.
One quirk worth knowing before you compare quotes
Review counts are not comparable across trades. Artificial turf companies in this dataset carry a median of 52 reviews against 40 for full-service landscapers — and at the top the gap is enormous, with the most-reviewed turf installer holding over a thousand. Turf work is faster, more repeatable, and finishes in a day or two. Full backyard rebuilds take weeks, cost more, and involve more that can go wrong.
So a turf company with 300 reviews and a design-build firm with 60 are not two points on one scale. Compare companies against others doing your kind of job, which is why this site splits the rankings by service rather than publishing one merged list.
What to do with all this
- Ignore the star rating until you have checked the review count. Under about 25 reviews, treat the average as provisional.
- Read the recent reviews, not the average. Ownership and crews change. A 4.7 built over ten years can describe two different companies.
- Compare within a trade. Turf against turf, pavers against pavers.
- Verify the license yourself. No review score tells you whether a contractor is licensed and bonded. Arizona's registrar publishes that at azroc.gov, and it takes a minute.
None of this requires trusting us. The ranking method is written out in full on the methodology page, and every listing links to its Google profile so you can check the underlying reviews at the source.