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House Bolting, Foundation Bolting, Chimney Repair, Cripple Wall Bracing
House Bolting, Foundation Bolting, Chimney Repair, Cripple Wall Bracing
Photo from inside crawlspace showing three of the earthquake bolts installed by Greg Sylvis.
Earthquake Safety by Greg Sylvis Contractor

We specialize in Foundation Bolting / House Bolting / Seismic Retrofitting, Chimney Repair, and Cripple Wall Bracing in the greater Los Angeles area

Website: gregsylvis.com

Phone: (626) 449-6118

Cross Streets: Between Scott Pl and Rosemont Ave

Open now

  • Sat 6:00 AM - 7:00 PM

500 Bellmore Way Pasadena, CA 91103 ·2180.04 mi

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Reviews

yelp
5.0 100 reviews
5 star
96 4 star
0 3 star
0 2 star
0 1 star
4
Tom D. 03/18/26

Like many other people leaving reviews for Greg, we also hired him for a seismic upgrade of our foundation. From the very first call, Greg was incredibly professional, responsive, detailed, and...

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Chris L. 02/25/26

This is a 5 star rating for Greg Sylvis' foundation bolting services. He's a deeply knowledgeable professional. He consistently follows through on his commitments. He makes very easy what could...

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Heather C. 12/28/25

Work has not been done yet (on me) - but I wanted to say he has been nothing but patient and helpful while I'm working on the EBB process because we ran into an unusual situation with paperwork....

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Michael T. 01/29/26

I've worked with many contractors in the past, and by far, Greg is the best one I've worked with. He's also very knowledgeable about the process in San Marino. Finally, Greg is also quite the...

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Dan H. 10/18/24

Five-star reviews are meant for people like Greg. We were happy to have found him on the earthquake site (I think it's the EBB site). He has all five-star reviews there too. So we connected, he...

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