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Tree Service in Markham

4 tree service pros in Markham with multi-platform trust scores.

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Who is the best tree service pro in Markham, Ontario?

The most trusted tree service pro in Markham, Ontario is BigLeaf Tree Service, with a ProScore of 76/100. ProScore has scored 4 tree service pros in Markham across 10+ data sources and 20+ trust signals. 2 of the 4 are Trusted-tier (70+) or higher.

Trust scores last computed October 13, 2026.

Which tree service pros in Markham score highest?

All 4 scored tree service professionals in Markham, ranked by ProScore.

ProScore scores 4 tree service professionals in Markham, and their average score is 65 out of 100. 2 of them reach the Trusted threshold of 70 or higher. 1 is registered with WSIB. 4 have Google reviews on file — 138 reviews in total.

1
76
Markham|★4.8
WSIB Verified117 reviews

BigLeaf Tree Service ranks 1st of the 4 tree service professionals ProScore scores in Markham, holding a ProScore of 76 out of 100 (Trusted tier). Its score draws on 117 Google reviews averaging 4.8 out of 5. Public records show it is registered with WSIB.

2
72
Markham|★5.0
8 reviews

Green King Landscaping and Snow Removal ranks 2nd of the 4 tree service professionals ProScore scores in Markham, holding a ProScore of 72 out of 100 (Trusted tier). Its score draws on 8 Google reviews averaging 5.0 out of 5 and 1 review on other major review platforms.

3
68
Markham|★5.0
8 reviews

A S A P Tree Experts ranks 3rd of the 4 tree service professionals ProScore scores in Markham, holding a ProScore of 68 out of 100 (Good tier). Its score draws on 8 Google reviews averaging 5.0 out of 5.

4
45
Markham|★3.4
5 reviews

Clintar Commercial Outdoor Services ranks 4th of the 4 tree service professionals ProScore scores in Markham, holding a ProScore of 45 out of 100 (Basic tier). Its score draws on 5 Google reviews averaging 3.4 out of 5.

Of 4 tree service professionals in Markham: 0 rated Elite (81+), 2 rated Trusted (70+), and 1 rated Good (54+).

How is a tree service pro's ProScore calculated?

Every tree service pro in Markham is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing where it applies 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

Who is the best tree service pro in Markham?

BigLeaf Tree Service has the highest ProScore (76/100) among 4 tree service professionals in Markham, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing where it applies, WSIB coverage, and AI-analyzed customer sentiment.

How do I find a trustworthy tree service pro in Markham?

Look for tree service professionals with verified active WSIB coverage, and consistent ratings across multiple platforms. ProScore aggregates these signals into a single score from 0-100. In Markham, 0 tree service professionals hold Elite-tier ProScores (81+), 2 are Trusted-tier (70+), and 1 is Good-tier (54+).

Are tree service professionals in Markham licensed?

Ontario does not require a licence to run a tree service. ISA arborist certification is voluntary, so treat it as a plus rather than a baseline, and ask about WSIB coverage and liability insurance before anyone climbs. Of the top 4 tree service professionals in Markham by ProScore, 1 is registered with WSIB according to ProScore’s records.

How many tree service professionals has ProScore scored in Markham?

ProScore has scored 4 tree service professionals in Markham, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Trust scores last computed October 13, 2026.

What's the ProScore distribution among tree service professionals in Markham?

Among 4 tree service professionals in Markham, Ontario: 0 are Elite-tier (81+), 2 are Trusted-tier (70+), and 1 is Good-tier (54+). The top 4 average a ProScore of 65/100, with BigLeaf Tree Service leading at 76/100.