Are seismic gas shut-off valves required in California?

• <div><p>Almost all new buildings in California need an earthquake shut-off valve. The requirements for an earthquake gas shut-off valve (and who can install it) depend on where you live. For example, according to the <a href="https://codelibrary.amlegal.com/codes/los_angeles/latest/lamc/0-0-0-186081">Los Angeles Municipal Code</a>, you’re required to hire a licensed contractor to install one whenever you build, sell, or renovate a home. Check with your local building department for your city’s laws on installing, permitting, and inspecting earthquake shut-off valves.</p></div>

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Q: Can earthquake retrofitting increase home value?

• <div><p>Earthquake retrofitting can increase your home value, making it a great return on investment. This feature is especially valuable in areas prone to earthquakes. Besides the increased safety value (not only for your family but for the next family who moves in), earthquake retrofitting also helps lower homeowners insurance rates. In addition, having your home earthquake retrofitted can make it easier to get a home loan since they are considered lower risk. </p></div>

Q: How effective is earthquake retrofitting?

• <div><p>A home with proper earthquake retrofitting can sustain minimal damage in earthquakes of <b>up to 7.0 magnitude</b>, although risks are higher based on how close and deep the earthquake is. A home closer to the earthquake epicenter will sustain greater damage, especially if the earthquake is closer to the surface of the Earth, but retrofitting can help minimize the risk of injuries.</p></div>

Q: How do I prevent future damage?

• <div><p>Ensure proper ventilation, fix leaks, and schedule regular pest inspections to protect your property.</p></div>

Q: Are brick houses safer in an earthquake?

• <div><p>According to the <a href="https://www.earthquakecountry.org/step4/urmwalls/#:~:text=Houses%20built%20of%20unreinforced%20masonry,and%20the%20roof%20is%20critical.">Earthquake Country Alliance</a>&mdash;a public and private alliance in California that works to improve earthquake and tsunami readiness&mdash;reports that unreinforced masonry, such as stone, bricks, and hollow clay tiles, is more susceptible to earthquake damage. The mortar between bricks isn&rsquo;t as stable as other building materials and methods.</p></div>

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Acculevel Inc

Acculevel Inc

Customers say: Super punctual

Recommended by 92% of Angi customers

Acculevel is your foundation repair expert, serving Indiana, Illinois, Kentucky, and Ohio and been in business since 1996. Most of our repairs come with a life of the structure warranty. Acculevel begins by evaluating your entire foundation system, checking your property for the signs and causes of foundation failure. From foundation & crawlspace repair to waterproofing & encapsulation systems, Acculevel can help you protect your home-- possibly the most valuable investment you'll ever make. A dry home is a healthy home. Acculevel is committed to providing the most technologically advanced repairs to help keep your home dry and on a safe foundation. A strong foundation protects your home's structure, lowers utility bills and maintains the value of your property. Check our pictures for the signs & symptoms of foundation & water damage, and then call Acculevel for your free visual inspection. 1-866-669-3349

"STAY AWAY FROM THIS COMPANY. They took my 1st half deposit and then vanished. I have called multiple times. Spoke with someone once and they promised a call back. Never did. Emailed and no response. This was over 4 months ago. Nothing. They stole my money. Sales guy was John Mullikin. Here's their class-act response by chat. The best response I've had yet. "Conversation closed by Erika"."

Jeff N on September 2025

"STAY AWAY FROM THIS COMPANY. They took my 1st half deposit and then vanished. I have called multiple times. Spoke with someone once and they promised a call back. Never did. Emailed and no response. This was over 4 months ago. Nothing. They stole my money. Sales guy was John Mullikin. Here's their class-act response by chat. The best response I've had yet. "Conversation closed by Erika"."

Jeff N on September 2025

Earthquake Retrofitting questions, answered by experts

Earthquake retrofitting can increase your home value, making it a great return on investment. This feature is especially valuable in areas prone to earthquakes. Besides the increased safety value (not only for your family but for the next family who moves in), earthquake retrofitting also helps lower homeowners insurance rates. In addition, having your home earthquake retrofitted can make it easier to get a home loan since they are considered lower risk.

A home with proper earthquake retrofitting can sustain minimal damage in earthquakes of up to 7.0 magnitude, although risks are higher based on how close and deep the earthquake is. A home closer to the earthquake epicenter will sustain greater damage, especially if the earthquake is closer to the surface of the Earth, but retrofitting can help minimize the risk of injuries.

Ensure proper ventilation, fix leaks, and schedule regular pest inspections to protect your property.

Almost all new buildings in California need an earthquake shut-off valve. The requirements for an earthquake gas shut-off valve (and who can install it) depend on where you live. For example, according to the Los Angeles Municipal Code, you’re required to hire a licensed contractor to install one whenever you build, sell, or renovate a home. Check with your local building department for your city’s laws on installing, permitting, and inspecting earthquake shut-off valves.

According to the Earthquake Country Alliance—a public and private alliance in California that works to improve earthquake and tsunami readiness—reports that unreinforced masonry, such as stone, bricks, and hollow clay tiles, is more susceptible to earthquake damage. The mortar between bricks isn’t as stable as other building materials and methods.

The Waterloo, IA homeowners’ guide to earthquake retrofitting services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

Angi
•
Aug 15, 2025Aug 15, 2025
How Much Does It Cost to Repair Earthquake Damage? [2025 Data]
Discover how much it costs to repair earthquake damage. Learn about average costs, key factors, and ways to save on earthquake repairs for your home.
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Aug 26, 2025Aug 26, 2025
How Much Does Earthquake Valve Installation Cost? [2025 Data]
A seismic shut-off valve stops the flow of gas during an earthquake, protecting your home from fires and explosions. Here’s what your earthquake valve installation cost will look like.
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Jan 28, 2025Jan 28, 2025
How Much Does an Earthquake Retrofit Cost? [2025 Data]
Earthquakes can cause serious damage, but you can protect your home. Find earthquake retrofit costs based on the type of home, foundation type, retrofit method, and more.
Mary Beth Eastman
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Jul 24, 2024Jul 24, 2024
What You Need to Know About Earthquake Gas Shut-Off Valve Installation
Earthquake gas shut-off valve installation is important for any home in earthquake-prone areas. Explore how they’re installed here.
Mizuki Hisaka
•
Aug 26, 2024Aug 26, 2024
What Is an Earthquake Gas Shut-Off Valve and Do You Need One?
In a seismic event, an earthquake gas shut-off valve could stop gas leaks and save your life. Learn more about its costs, installation, and benefits.
Stephanie Mickelson
•
Jul 23, 2024Jul 23, 2024
Who Should I Hire for Earthquake Retrofitting?
If you live in an older home in an area prone to seismic activity, you likely need to hire a seismic retrofitting company to protect your home from earthquakes.