Portola Valley Earthquake Shut-Off Valve Installation — Code-Compliant Protection for Gas Lines

Living in Portola Valley offers a peaceful escape surrounded by the natural beauty of the Peninsula’s rolling hills, but it also means residing near active fault lines like the San Andreas. As a result, the risk of earthquake-related damage—including gas line ruptures—is significant. A seismic gas shut-off valve is a simple, affordable way to prevent serious hazards when the next quake hits.

What Is a Seismic Gas Shut-Off Valve?
Installed at your home’s gas meter, a seismic shut-off valve automatically halts the flow of natural gas when it detects earthquake vibrations above 5.2 magnitude. No power or manual interaction is needed. Once activated, the valve remains closed until manually reset after a safety inspection.

Why Portola Valley Homeowners Need One:
• Earthquake Protection: Shuts off gas instantly during seismic activity
• Fire and Explosion Prevention: Prevents dangerous leaks from igniting
• Code Compliance: Required for many remodels and new builds in San Mateo County
• Home Insurance Incentives: May qualify you for discounts on premiums
• Peace of Mind: Keeps your family and home safer when disaster strikes

Where It’s Installed:
Your shut-off valve is installed directly on your main gas line near the PG&E meter. The process typically takes less than 2 hours and includes full system testing and instructions for future resets.

Serving All Portola Valley Neighborhoods
From Ladera to Blue Oaks, we’ve helped residents across Portola Valley upgrade their gas safety. Whether you’re building a new home, adding an ADU, or updating an older property, we’ll make sure your system meets all applicable codes and safety regulations.

How We Help:
• Permit handling and city coordination
• Code-compliant seismic shut-off installation
• Same-day appointments available
• Financing available at 0% APR (subject to approval)
• Post-install testing and walkthroughs with every job

With earthquakes being an inevitable part of life in the Bay Area, a shut-off valve is one of the smartest and most cost-effective safety improvements a homeowner can make.

Call (408) 295-4309 or book online to install your shut-off valve in Portola Valley today.