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Cornerstone Insurance Group
Excellent
550 Water Street, Oshawa, ON K3W 1R6
Profile last updated: February 20, 2026
Est. 2014 5-10 team members
3.2
Cornerstone Insurance Group has been helping individuals and businesses in Oshawa and across Ontario find the right insurance coverage at competitive prices. As an independent brokerage, we have the freedom to compare policies from dozens of leading Canadian insurance companies, giving our clients access to options they simply can't find on their own.
From auto and home insurance to commercial liability and specialty coverages, our knowledgeable brokers are here to guide you through the process. We handle the comparisons, the paperwork, and the negotiations so you don't have to.
With 12 years of experience serving our community, we have built strong relationships with insurers and a deep understanding of our clients' needs. Our commitment to exceptional customer service has earned us the trust of thousands of policyholders across Ontario.
Contact Information
Location
550 Water Street
Oshawa, ON K3W 1R6
Location Map
550 Water Street, Oshawa, ON K3W 1R6
Get DirectionsInsurance Lines
Auto InsuranceBusiness Insurance
Specialties
Fleet InsuranceProfessional Liability
Business Hours
SundayClosed
Monday08:00 - 16:30
Tuesday08:00 - 16:30
Wednesday08:00 - 16:30
Thursday08:00 - 16:30
Friday08:00 - 16:30
SaturdayClosed
Languages
English
Photos
Reviews
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3.2
6 reviews
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T
Tyler Girard
Nov 2025
Lost my documents
Cornerstone Insurance Group lost some of my paperwork during the home insurance application process. Had to resubmit everything. Very unprofessional experience.
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Amelia Chen
Oct 2025
Local knowledge matters
Cornerstone Insurance Group really understands the local insurance market in Oshawa. Their connections with insurers helped me get coverage that bigger brokers couldn't.
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Hassan Ross
Jul 2025
Excellent service
After a car accident, Cornerstone Insurance Group guided me through the entire claims process. I felt supported every step of the way. Cannot recommend them enough.
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Laura Bouchard
Feb 2025
Exceptional claims handling
When I had a water damage claim, Cornerstone Insurance Group handled everything quickly and professionally. The claim was settled faster than I expected.
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L
Liam Bouchard
Mar 2024
Poor communication
My biggest issue with Cornerstone Insurance Group was the lack of communication. I had to call multiple times to get updates on my home insurance policy. Frustrating.
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S
Samantha Poirier
Feb 2024
Satisfied customer
Overall satisfied with Cornerstone Insurance Group. They set up our condo insurance and explained the coverage well. The quote process could be faster.
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