Best Pool Builders in Ontario, CA

Every pool builders on this page was pulled from public Google Business data — we surface businesses with the most Google ratings and highest average star scores in Ontario. No one pays to appear here. The list is re-ranked automatically as ratings change, so the order you see reflects real customer feedback, not ad spend.

Listings on this site are Google-rated, meaning their rating and review count come directly from Google Business Profile data and are recalculated regularly. We do not independently audit licenses or insurance — that step is yours to complete before hiring. Every listing page shows the business's current Google score so you can compare at a glance.

We use "top-rated" to describe businesses that rank in the top tier of Google ratings in Ontario — typically 4.5 stars or higher with a meaningful number of reviews. It is a reflection of aggregated customer experience reported to Google, not an editorial endorsement. Businesses with fewer than a minimum threshold of reviews are filtered out to avoid small-sample distortion.

If your business appears on Google Business Profile and operates in Ontario, it may already be in our database — search for your business name above. If it is not listed yet, use the "Add my business" link at the bottom of the page to submit it. Listings are added manually by our team and typically go live within 2–5 business days.

Yes — browsing listings, reading reviews, and contacting businesses through this directory is completely free for consumers. We earn revenue when businesses claim their listing and upgrade to a paid profile, or through disclosed affiliate referrals on certain service categories. Organic ranking is never influenced by whether a business is a paying customer.