Plumbers in Oldcastle
4 plumbers in Oldcastle with multi-platform trust scores.
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Who is the best plumber in Oldcastle, Ontario?
The most trusted plumber in Oldcastle, Ontario is Pro Trades Mechanical Inc., with a ProScore of 74/100. ProScore has scored 4 plumbers in Oldcastle across 10+ data sources and 20+ trust signals. 1 of the 4 are Trusted-tier (70+) or higher.
Trust scores last computed September 19, 2026.
Which plumbers in Oldcastle score highest?
All 4 scored plumbers in Oldcastle, ranked by ProScore.
ProScore scores 4 plumbers in Oldcastle, and their average score is 64 out of 100. 1 of them reaches the Trusted threshold of 70 or higher. 2 are registered with WSIB and 1 holds a TSSA licence. 4 have Google reviews on file — 294 reviews in total, and 2 carry a Better Business Bureau rating.
Pro Trades Mechanical Inc. ranks 1st of the 4 plumbers ProScore scores in Oldcastle, holding a ProScore of 74 out of 100 (Trusted tier). Its score draws on 215 Google reviews averaging 4.7 out of 5 and a Better Business Bureau rating of A+. Public records show it is registered with WSIB. Its ProScore has risen since the previous recompute.
Mailloux Mechanical Ltd. ranks 2nd of the 4 plumbers ProScore scores in Oldcastle, holding a ProScore of 65 out of 100 (Good tier). Its score draws on 46 Google reviews averaging 4.9 out of 5. Public records show it is licensed by the TSSA.
Pannunzio Drainage Inc ranks 3rd of the 4 plumbers ProScore scores in Oldcastle, holding a ProScore of 62 out of 100 (Good tier). Its score draws on 28 Google reviews averaging 4.6 out of 5 and a Better Business Bureau rating of A+.
Supreme Plumbing & Heating Inc. ranks 4th of the 4 plumbers ProScore scores in Oldcastle, holding a ProScore of 55 out of 100 (Good tier). Its score draws on 5 Google reviews averaging 5.0 out of 5. Public records show it is registered with WSIB.
Of 4 plumbers in Oldcastle: 0 rated Elite (81+), 1 rated Trusted (70+), and 3 rated Good (54+).
How is a plumber's ProScore calculated?
Every plumber in Oldcastle is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing and WSIB), Transparency (online presence and profile completeness), and Sentiment (AI analysis of customer reviews). The result is a ProScore from 0 to 100.
Read the full methodology →Who are the top 3 plumbers in Oldcastle?
Browse all plumbers in Oldcastle →What else should I check before hiring plumbers in Oldcastle?
Frequently Asked Questions
Who is the best plumber in Oldcastle?
Pro Trades Mechanical Inc. has the highest ProScore (74/100) among 4 plumbers in Oldcastle, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing, WSIB coverage, and AI-analyzed customer sentiment.
How do I find a trustworthy plumber in Oldcastle?
Look for plumbers with verified active WSIB coverage, and consistent ratings across multiple platforms. ProScore aggregates these signals into a single score from 0-100. In Oldcastle, 0 plumbers hold Elite-tier ProScores (81+), 1 is Trusted-tier (70+), and 3 are Good-tier (54+).
Are plumbers in Oldcastle licensed?
Plumbers in Ontario should hold valid business registration and active WSIB workers compensation coverage. ProScore verifies these credentials for every provider. Of the top 4 plumbers in Oldcastle by ProScore, 2 carry active WSIB coverage.
How many plumbers has ProScore scored in Oldcastle?
ProScore has scored 4 plumbers in Oldcastle, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Trust scores last computed September 19, 2026.
What's the ProScore distribution among plumbers in Oldcastle?
Among 4 plumbers in Oldcastle, Ontario: 0 are Elite-tier (81+), 1 is Trusted-tier (70+), and 3 are Good-tier (54+). The top 4 average a ProScore of 64/100, with Pro Trades Mechanical Inc. leading at 74/100.