Auto InsuranceHome InsuranceTenant InsuranceBusiness Insurance
Cornerstone Insurance Agency
Excellent
1656 Cedar Lane, Markham, ON M3M 8T1
Profile last updated: February 20, 2026
Est. 1997 2-5 team members
3.7
For individuals and businesses in Markham and throughout Ontario, Cornerstone Insurance Agency is the insurance brokerage that delivers real results. We work independently from any single insurance company, giving us the flexibility to shop the market and negotiate on your behalf.
Our expertise spans across auto insurance, property insurance, commercial insurance, and specialty lines. We also provide ongoing support for claims, policy adjustments, and coverage reviews to keep you properly protected year after year.
With 29 years of experience serving our community, we have built strong relationships with insurers and a deep understanding of our clients' needs. At Cornerstone Insurance Agency, our goal is simple: to provide you with the best insurance coverage at the most competitive rate, backed by exceptional personal service.
Contact Information
Location
1656 Cedar Lane
Markham, ON M3M 8T1
Location Map
1656 Cedar Lane, Markham, ON M3M 8T1
Get DirectionsInsurance Lines
Tenant InsuranceBusiness Insurance
Specialties
Vacation PropertyProfessional LiabilityConstruction Insurance
Business Hours
SundayClosed
Monday09:00 - 17:30
Tuesday09:00 - 17:30
Wednesday09:00 - 17:30
Thursday09:00 - 17:30
Friday09:00 - 17:30
Saturday10:00 - 14:00
Languages
English
Photos
Reviews
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3.7
6 reviews
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C
Charlotte Roy
Jan 2026
Very knowledgeable team
Cornerstone Insurance Agency has a team of very knowledgeable brokers. They helped me understand the difference between various auto insurance coverages and what I actually need.
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Lucas Morrison
Jan 2026
Good overall experience
Had a good experience with Cornerstone Insurance Agency. They found me a competitive rate for home insurance. Only minor issue was the paperwork took a bit longer than expected.
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Y
Yuki Schmidt
Dec 2025
Happy with the savings
Saved about $200 on my auto insurance by switching through Cornerstone Insurance Agency. The broker was friendly and professional. Renewal process was smooth.
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M
Mia Dubois
Aug 2024
Responsive and caring
When my basement flooded, Cornerstone Insurance Agency was the first call I made. They walked me through the claims process and followed up regularly. A+ service.
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S
Sarah Robertson
Jul 2024
Okay but not great
Used Cornerstone Insurance Agency for tenant insurance. Price was average, service was fine. Nothing that really stood out compared to other brokers I've used.
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A
Ashley Bergeron
Jul 2024
Insurance made simple
As a newcomer to Markham, Cornerstone Insurance Agency made getting auto and tenant insurance incredibly simple. They explained the requirements in Ontario clearly.
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