Cornerstone Roofing Inc.

Second-generation, family-owned since 2006, Cornerstone Roofing is the Santa Rosa roofing contractor Sonoma County homeowners and businesses trust for composite shingle, metal, tile, and low-slope roofing installation, replacement, and repair. Licensed under CSLB #909400, our crew handles everything from single-family homes to commercial buildings — on time, on budget, and cleaned up before we leave. Nearly 20 years serving Santa Rosa, Sebastopol, Rohnert Park, Petaluma, and the greater North Bay. Transparent pricing, free estimates, and a track record general contractors rely on by name.

Cover photo of Cornerstone Roofing Inc.

Customer's reviews

It was such a pleasure to work with Trevor and the team at Cornerstone. My daughter inherited her Dad’s home in2022 and had a complete remodel done. The storms hit hard and the roof was leaking. Cornerstone replaced the roof which was all Spanish tile. They did such a wonderful job that I reached out to them again when my home’s roof was leaking into my kitchen earlier this year. They got the roof replaced on my house and my detached garage quite quickly and reasonably. I so appreciated that they left their work areas clean every day. If I ever need a replacement for any of the other homes, they will be the first ones I call, but hopefully not anytime soon. Highly, highly recommend! ~ Maria C
I cannot recommend Trevor and the team at Cornerstone Roofing highly enough. We were dealing with two substantial leaks in our roof, and the level of service we received was truly exceptional. Before they were even scheduled to replace the entire roof, Trevor went above and beyond by coming out right before a major storm to provide temporary patches. It gave us immense peace of mind during a stressful time. Furthermore, once he saw the extent of the damage, he took advantage of a break in the weather to move our roof replacement up—getting the job done right before the massive December storms hit Bodega Bay. To top it off, their pricing was very competitive. If you are looking for a roofing company that is professional, responsive, and genuinely cares about the quality of their work, look no further. I’m already recommending them to all my neighbors and friends. ~ Todd E
I own a house at The Sea Ranch that needed a roof replacement. I spoke to Trevor and inquired if they serviced the area. Luckily they did! They gave me a reasonable quote and "they say what they do and do what they say" which is somewhat rare these days. I never recommend any contractor if they're not "5 stars" and I highly recommend Cornerstone Roofing for your roof repair or replacement. Their prices are fair and their work is exemplary. I have already recommended them to one of my neighbors and I hope they use them. I'm glad I did and you will be too. ~ S A

Blog

What Are the Most Common Causes of Roof Leaks in Santa Rosa, CA Homes? Roof leaks rarely start obviously. Winter rain, gusty weather, and aging mate… Posted on: June 12, 2026
How Roof Ventilation Affects Your Santa Rosa, CA Home? Here is what Santa Rosa homeowners should know about roof ventilation before problems appear.… Posted on: May 21, 2026
How to Evaluate Roofing Contractors in Santa Rosa, CA (Licenses, Estimates, and Red Flags Compared) Choosing the right roofing contractor in Santa R… Posted on: April 23, 2026

Contact information

Address
2100 Llano Rd N1 Santa Rosa 95407
Sunday Closed
Monday 7:00 AM - 4:30 PM
Tuesday 7:00 AM - 4:30 PM
Wednesday 7:00 AM - 4:30 PM
Thursday 7:00 AM - 4:30 PM
Friday 7:00 AM - 4:30 PM
Saturday Closed

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