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Trusted Contractors in Thunder Bay, Ontario

ProScore has scored 158 contractors in Thunder Bay using 30,000+ verified reviews across 10+ data sources including government licensing, customer reviews, and AI sentiment analysis.

TOTAL PROVIDERS
195
AVG TRUST SCORE
54
CLAIMED PROFILES
0

Top Landscaping in Thunder Bay

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78
Termax Service Group
★ 5.0 (27)
77
Woody's Marine & RV
★ 4.8 (102)
76
Lockstone Yard And Patio Centre
★ 4.8 (43)

Top General Contractors in Thunder Bay

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74
DKI - TIL-KA
★ 4.7 (46)
70
SRL Contracting Corp.
★ 4.9 (33)
68
Groundhogs™
★ 4.9 (114)

Top Tree Service in Thunder Bay

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68
Tim's Whole Health
★ 4.5 (77)
66
AJ's Contracting & Rentals - Thunder Bay Waterproofing Service
★ 4.9 (22)
66
Marco's Mowing & Snow
★ 4.9 (119)

Top Plumbers in Thunder Bay

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72
Reliance Heating, Air Conditioning & Plumbing
★ 4.6 (1618)
70
Craig Plumbing Centre
★ 4.0 (49)
69
B. Gibson Mechanical
★ 4.2 (52)

Best Contractors in Thunder Bay by Trade

See ProScore-ranked lists of the top contractors in Thunder Bay for each trade we cover.

Best plumbers in Thunder Bay →Best electricians in Thunder Bay →Best hvac contractors in Thunder Bay →Best roofers in Thunder Bay →Best general contractors in Thunder Bay →Best kitchen remodeling in Thunder Bay →Best pest control in Thunder Bay →Best tree service in Thunder Bay →Best landscaping in Thunder Bay →

From our research: Thunder Bay ranks 59th of 64 Ontario cities for contractor trust, averaging 45.9 out of 100 across 196 scored contractors — see the 2026 Trust Index.