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Seismic Safety Inc

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Foundation bolting Altadena

What Seismic Safety Inc does

Seismic Safety Inc provides earthquake retrofitting for wood frame buildings, focusing on the connection between a structure and its foundation. Its listed services include house bolting, foundation repair and replacement, floor adjustment, site drainage referrals, and seismic evaluation. The company performs structural-foundation reinforcements intended to reduce the risk of earthquake-induced damage to homes, and says its house bolting is carried out by a trained and certified team. The website notes that buildings with weak cripple wall bracing or no bolting may slide off their foundations even in moderate earthquakes.

Summarised from the business's own website, checked October 2026. Not written or endorsed by the business.

About

Seismic Safety Inc Founded in 1954 by Ed Sylvis.

Hiring a construction company

Construction overruns usually start with an unclear contract. Insist on a written scope, a payment schedule tied to stages and proof of insurance.

What to check

  • Licences and insurance for the size of job
  • Completed projects you can visit or call about
  • A written contract with stages and payments
  • Who obtains permits and inspections

Questions to ask

  • What could cause delays or extra cost?
  • Who is on site daily and who do I contact?
  • What warranty do you give on the work?

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