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>

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>

Top-rated earthquake retrofitting specialists.

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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: Why do I need earthquake retrofitting?

• <div><p>An earthquake retrofit is essential for safety in an earthquake-prone area. Without proper retrofitting, your home is at risk of sliding off the foundation, shifting, or collapsing.</p><p>You may also require a retrofit if your home was built before 1980 when building codes began requiring reinforcing, bracing, and bolting for new construction. You may not be eligible for insurance to help pay for earthquake-related damages without a retrofit.</p></div>

Q: What Is a gas shut-off valve for earthquakes?

• <div><p>Earthquake gas shut-off valves, or seismic gas shut-off valves, are safety devices that attach to your natural gas line. When an earthquake hits, the valve automatically turns off the flow of gas. Earthquake gas shut-off valves can prevent gas leaks, which are especially dangerous after a quake due to the risk of fire and explosion.</p></div>

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Verified Reviews for Earthquake Retrofitting pros in Summerville, SC

*The Angi rating for Earthquake Retrofitting companies in Summerville, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Earthquake Retrofitting needs.

*The HomeAdvisor rating for Earthquake Retrofitting companies in Summerville, SC is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Earthquake Retrofitting needs.

Last update on December 09, 2025

Reviewed in June 2025
I have a very positive experience on this platform. Contractors responded quickly.
Elegance Flooring
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Reviewed in December 2022
This is by far the best company I have ever felt with!! Tiger was extremely professional and very thorough. I would recommend them to everyone. 5+ rating
Thrift Appliance Repair and Service
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Reviewed in February 2021
I have used these guys on 2 separate properties over the past 5 years. They are top notch, dependaple, and respectable. They do what they say, and their installation work is excellent. They stand behind their work. They can solve problems inherent in retrofitting new HVAC into existing...
Carolina Air Care Heating and Air, LLC
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Reviewed in March 2016
When I orginally hired him, he came out and took care of our problem. HOWEVER, i tried to contact him again and he NEVER would respond back. He totally ignore calls and emails. That is UNACCEPTABLE.
X Spurt Seamless Gutters
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Reviewed in September 2013
Thanks to everyone at Strock Design & Remodel. Your service was friendly, efficient and professional and the job was done in a very timely manner. They took great care of me on short notice which was very much appreciated. This will be a company that I will definitely use again and recommend...
STROCK ENTERPRISES DESIGN & REMODEL
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Reviewed in June 2013
I called Chris Stewart this morning and told him I?d like to discuss some minor brick wall damage I felt his tree service caused while felling three 50+ ft tall Pines yesterday about 30-40 ft from my wall. He immediately said something like oh great another bad day. They were topping...
Stewart Tree Service
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Reviewed in December 2012
November 28th, we contacted Mike after reading his reviews in Angie's List. We wanted to have him install a new outdoor receptacle to be used with the electric BBQ grill we had just purchased as the existing receptacle was not in a convenient location. We also wanted additional floodlights...
MISCELLANEOUS ELECTRICAL SERVICES, LLC.
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Find Earthquake retrofitting specialists in Summerville

1st Choice Painting and Construction

5.00(

)

1st Choice Painting and Construction

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Call and make an appointment today. We do it all and will beat ANY estimate!

Superior Builders SC LLC

4.97(

)

Superior Builders SC LLC

4.97(

)

Customers say: True professional

Recommended by 98% of Angi customers

We are a full-service construction company specializing in large home renovations and new home construction. We strive to provide you with not only top-shelf work, but a quality experience that is unmatched. Your satisfaction is our top priority and to us that means a high level of respect with a healthy dose of creative workmanship. Our passion truly lies in helping you generate creative ways to meet (and exceed) your expectations for your most beautiful home. Don't take my word for it, please check out our reviews! Reach out to me here: Phone: 843-532-3903 Email: [email protected]. (We are only able to service James Island, Downtown Charleston and majority of Mount Pleasant at this time due to travel time.)

"We highly recommend Superior Builders, they were great to work with and did an excellent job on our garage. We had them back to remodel our home as well."

Anne W on September 2020

"We highly recommend Superior Builders, they were great to work with and did an excellent job on our garage. We had them back to remodel our home as well."

Anne W on September 2020

Earthquake Retrofitting questions, answered by experts

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

An earthquake retrofit is essential for safety in an earthquake-prone area. Without proper retrofitting, your home is at risk of sliding off the foundation, shifting, or collapsing.

You may also require a retrofit if your home was built before 1980 when building codes began requiring reinforcing, bracing, and bolting for new construction. You may not be eligible for insurance to help pay for earthquake-related damages without a retrofit.

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.

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.

Earthquake gas shut-off valves, or seismic gas shut-off valves, are safety devices that attach to your natural gas line. When an earthquake hits, the valve automatically turns off the flow of gas. Earthquake gas shut-off valves can prevent gas leaks, which are especially dangerous after a quake due to the risk of fire and explosion.

The Summerville, SC 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
•
Oct 22, 2025Oct 22, 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.
Mariel Loveland
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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.
Angi
•
Nov 4, 2025Nov 4, 2025
How Much Does an Earthquake Retrofit Cost? [2025 Data]
Earthquake retrofit costs vary based on home size, location, and project scope. Learn what impacts your price and how to budget for a safer, more secure home.
Mary Beth Eastman
•
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.
Stacey L. Nash
•
Jul 9, 2024Jul 9, 2024
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.
Stacey L. Nash
•
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.