Best Plumbers in London, Ontario
ProScore Verified
ProScore has analyzed and scored 48 plumbers in London using 15+ verified data sources including government licensing, customer reviews, and AI sentiment analysis. Here are the top-rated professionals.
How ProScore Ranks Plumbers
Every plumber in London 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 →Frequently Asked Questions
How does ProScore rank plumbers in London?
ProScore aggregates data from 15+ verified sources including Google Reviews, BBB, government licensing databases (WSIB, Skilled Trades Ontario), and AI sentiment analysis. Each provider receives a score from 0 to 100 based on four pillars: Reputation, Verification, Transparency, and Sentiment.
What makes a plumber trustworthy?
A trustworthy plumber has strong ratings across multiple review platforms, verified government licensing, active WSIB workers compensation coverage, and consistently positive customer sentiment. ProScore Elite-tier providers (85+) meet all these criteria.
How many plumbers are verified in London?
ProScore has verified and scored 48 plumbers in London, Ontario. Each provider is evaluated using data from 15+ government and industry databases to produce an objective trust score.