What can cause vibrations in a house?

• <div><p>Hearing or feeling vibrations in your house can be unsettling, but there are a few <a href="https://www.angi.com/articles/i-hear-vibrating-motor-sound-my-walls-night-it-my-pipes-or-it-related-air-vents-or-furnace">possible causes for a vibrating noise in your wall</a> or floor. Light bulbs and fixtures, circuit breakers, loose pipes, or faulty wiring could all cause vibrations. If you’re not sure what’s causing the vibrations, you can call a contractor to assess your home and narrow down the cause.</p></div>

How much does it cost to retrofit a house for earthquakes?

• <div><p>Costs vary as much as timelines. The average <a href="https://www.angi.com/articles/how-much-does-earthquake-retrofitting-cost.htm">earthquake retrofit costs</a> between <b>$3,500 and $8,700</b>. However, homes on hillsides, large homes, and those with rooms over garages can cost up to $12,000 or more. Make sure to get a few estimates to compare the cost and services.</p></div>

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: If my appliances have gas shut-off valves, do I still need a seismic shut-off valve?

• <div><p>Even if you invested in the <a href="https://www.angi.com/articles/cost-adding-gas-shutoff-valve-built-oven.htm">cost of a gas shut-off valve for your oven</a> and other appliances, it&rsquo;s a good idea to add a seismic shut-off valve as an extra safety measure. </p><p>Gas shut-off valves for appliances are manual, meaning someone has to cut off the flow of gas. This leaves room for error, as you might not be home or might be too distracted to think about gas lines during an earthquake. An earthquake valve is automatic and will protect your home from gas-related disasters in the event of an earthquake.</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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32 years of experience

Dzinbild is a full service General Construction Company owned by Gene C. Layne, Jr., CCM, an experienced certified construction manager who has managed over $500 million dollars of quality design and construction for the past 30 years.

Earthquake Retrofitting questions, answered by experts

Hearing or feeling vibrations in your house can be unsettling, but there are a few possible causes for a vibrating noise in your wall or floor. Light bulbs and fixtures, circuit breakers, loose pipes, or faulty wiring could all cause vibrations. If you’re not sure what’s causing the vibrations, you can call a contractor to assess your home and narrow down the cause.

Even if you invested in the cost of a gas shut-off valve for your oven and other appliances, it’s a good idea to add a seismic shut-off valve as an extra safety measure.

Gas shut-off valves for appliances are manual, meaning someone has to cut off the flow of gas. This leaves room for error, as you might not be home or might be too distracted to think about gas lines during an earthquake. An earthquake valve is automatic and will protect your home from gas-related disasters in the event of an earthquake.

Costs vary as much as timelines. The average earthquake retrofit costs between $3,500 and $8,700. However, homes on hillsides, large homes, and those with rooms over garages can cost up to $12,000 or more. Make sure to get a few estimates to compare the cost and services.

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.

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.

The Maurertown, VA homeowners’ guide to earthquake retrofitting services

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

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Angi
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Oct 22, 2025Oct 22, 2025
How Much Does It Cost to Repair Earthquake Damage? [2025 Data]
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How Much Does Earthquake Valve Installation Cost? [2025 Data]
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How Much Does an Earthquake Retrofit Cost? [2025 Data]
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How Long Does Earthquake Retrofitting Take?
Fear not! Steady the shakes, tame the tremors, and get earthquake-ready while we give you a better idea of how long earthquake retrofitting takes.
Stephanie Mickelson
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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.
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Jul 25, 2024Jul 25, 2024
Earthquake Retrofit 101: Everything You Need to Know About Prepping a Home for a Seismic Event
If you live near a fault line, your home may need an earthquake retrofit. Find out what you need to know about the process, from costs to who you should hire.