Top-rated earthquake retrofitting specialists.

Get matched with top earthquake retrofitting specialists in Altadena, CA

There are 8 highly-rated local earthquake retrofitting specialists.

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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon30
    Verified earthquake retrofitting services reviews

Find Earthquake retrofitting specialists in Altadena

Avatar for Alpha Structural, Inc.

Alpha Structural, Inc.

4.67(
231
)
Approved Pro

Alpha Structural, Inc.

4.67(
231
)
Approved Pro
Customers say: Super punctual
197 local quotes requested
33 years of experience

Alpha Structural, Inc. has over 850 years of combined technical experience in Foundation and Hillside Repair. All of our experience is hard-core and down-in-the-trenches – not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California. Alpha Structural, Inc. is the ONLY company in the SOCAL area licensed to ENGINEER and BUILD any type of repair project. That means that you'll work with us through the whole project, not unknown sub-contractors that you didn't hire and cannot control or predict. Alpha Structural, Inc. a licensed, bonded, and insured contractor (license # 663409). We are licensed with the following classifications: A (General Engineering Contractor). B (General Building Contractor). C-8 (Concrete). HIC (Home Improvement Contractor). CALL US NOW FOR AN INSPECTION OR ESTIMATE! (323)258-5482.

"I worked with Alpha once before, and they assisted with a second project 2 years ago which, now finally completed, I'm able to write a review about. Alpha helped with structural plans for windows in a garden level unit in order to prepare the proposal for city approval. Alpha is a big company and it took them a little while to complete everything; however I can certainly say that the engineer and contact people were knowledgeable and thorough. The plans were approved with their help and now that the unit is permitted for occupancy, the windows are a lovely attribute to the space."

Robert N on September 2024

Alpha Structural, Inc. has over 850 years of combined technical experience in Foundation and Hillside Repair. All of our experience is hard-core and down-in-the-trenches – not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California. Alpha Structural, Inc. is the ONLY company in the SOCAL area licensed to ENGINEER and BUILD any type of repair project. That means that you'll work with us through the whole project, not unknown sub-contractors that you didn't hire and cannot control or predict. Alpha Structural, Inc. a licensed, bonded, and insured contractor (license # 663409). We are licensed with the following classifications: A (General Engineering Contractor). B (General Building Contractor). C-8 (Concrete). HIC (Home Improvement Contractor). CALL US NOW FOR AN INSPECTION OR ESTIMATE! (323)258-5482.

"I worked with Alpha once before, and they assisted with a second project 2 years ago which, now finally completed, I'm able to write a review about. Alpha helped with structural plans for windows in a garden level unit in order to prepare the proposal for city approval. Alpha is a big company and it took them a little while to complete everything; however I can certainly say that the engineer and contact people were knowledgeable and thorough. The plans were approved with their help and now that the unit is permitted for occupancy, the windows are a lovely attribute to the space."

Robert N on September 2024


Avatar for Socal Express Restoration and Construction Inc.

Socal Express Restoration and Construction Inc.

New on AngiNew on Angi
Approved Pro

Socal Express Restoration and Construction Inc.

New on AngiNew on Angi
Approved Pro
5 years of experience
Free onsite estimate

We are an ethical, honest and professional company. We are easy to communicate with. Always working with you until the job is done right and to your specifications. When working with our company you can expect integrity, prompt service and superior customer service. Always leaving the job site clean . We take pride in our services and enjoy making clients repeat clients. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. You'll be pleased you did. Thank you

We are an ethical, honest and professional company. We are easy to communicate with. Always working with you until the job is done right and to your specifications. When working with our company you can expect integrity, prompt service and superior customer service. Always leaving the job site clean . We take pride in our services and enjoy making clients repeat clients. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. You'll be pleased you did. Thank you


Avatar for VULCAN BUILD INC

VULCAN BUILD INC

5.00(
23
)
Approved Pro

VULCAN BUILD INC

5.00(
23
)
Approved Pro
Customers say: Quick response
7 years of experience
Free onsite estimate

VULCAN BUILD INC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I recently had a fantastic experience with Vulcan company. Michael, the project manager, was top-notch. They worked on my bathroom, bedroom, kitchen, living room, and porch. The project was really budget-friendly, and their communication was excellent. They kept me in the loop the entire time with no surprises. The work quality was outstanding, with great attention to detail. Michael and his team were professional and efficient!"

Margot C on August 2025

VULCAN BUILD INC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I recently had a fantastic experience with Vulcan company. Michael, the project manager, was top-notch. They worked on my bathroom, bedroom, kitchen, living room, and porch. The project was really budget-friendly, and their communication was excellent. They kept me in the loop the entire time with no surprises. The work quality was outstanding, with great attention to detail. Michael and his team were professional and efficient!"

Margot C on August 2025


DAM Ventures, Inc.

4.33(
87
)
Approved Pro

DAM Ventures, Inc.

4.33(
87
)
Approved Pro
Customers say: Quality work
9 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Very good customer service."

Jay L on January 2022

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Very good customer service."

Jay L on January 2022


Avatar for American Home Improvement, Inc.

American Home Improvement, Inc.

4.56(
163
)
Approved Pro

American Home Improvement, Inc.

4.56(
163
)
Approved Pro
Customers say: Quality work
338 local quotes requested
21 years of experience

At American Home Improvement, Inc. it is our mission to provide the highest quality of service in all aspects of our business. We are extremely thorough in services that we provide and aim to be very receptive to any client's issues, questions or concerns and handle them promptly and professionally. We take necessary steps to ensure that our clients are completely satisfied with all of our contractual and assumed responsibilities. Above all else, we will fulfill these responsibilities while maintaining the highest ethical standards in both of our work and our character.

"American Home Improvement handled our bathroom remodeling project, and David and his crew were fantastic from start to finish. They showed up on time, kept everything clean, and explained each step so we always knew what was happening. The new shower, tiles, and lighting came out better than we imagined. What impressed us most was how respectful and detail-focused the whole team was. If you want a smooth remodel with zero stress, these are the people to call."

Nina B on November 2025

At American Home Improvement, Inc. it is our mission to provide the highest quality of service in all aspects of our business. We are extremely thorough in services that we provide and aim to be very receptive to any client's issues, questions or concerns and handle them promptly and professionally. We take necessary steps to ensure that our clients are completely satisfied with all of our contractual and assumed responsibilities. Above all else, we will fulfill these responsibilities while maintaining the highest ethical standards in both of our work and our character.

"American Home Improvement handled our bathroom remodeling project, and David and his crew were fantastic from start to finish. They showed up on time, kept everything clean, and explained each step so we always knew what was happening. The new shower, tiles, and lighting came out better than we imagined. What impressed us most was how respectful and detail-focused the whole team was. If you want a smooth remodel with zero stress, these are the people to call."

Nina B on November 2025


Avatar for Golden Retrofit

Golden Retrofit

5.00(
76
)
Approved Pro

Golden Retrofit

5.00(
76
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
26 local quotes requested

Golden Retrofit & Foundation Repair is the most innovative and forward thinking company in the business. We specialize in foundation repair, earthquake retrofitting, foundation replacement and leveling. From complex situations to simple repairs, our experienced team always has a solution.

"I started with a list of over 50 potential companies and knew none of them. I brought my list down to 6 based on experience, license number and reviews. I intended to have 4 of those give me a bid but after Golden Retrofit (bid#2) I knew I was done. Selina knew so much more about the EBB process then the other 5 companies I spoke with. Andy gave me such a good Inspection and knowledge of my crawl space that I knew he crawled through every inch of my space. I've been under my house dozens and dozens of times. Kristina kept me informed of every step and handled my Deposit as well as Final Payment. Jordan was with me prior to the City Inspection and provided quickly each view the City Inspector needed to see. The Inspection Process was so Professional I knew they had down this before. I can't say enough about my experience with Golden Retrofit. In my humble opinion they Are The Best!"

Thomas B on February 2025

Golden Retrofit & Foundation Repair is the most innovative and forward thinking company in the business. We specialize in foundation repair, earthquake retrofitting, foundation replacement and leveling. From complex situations to simple repairs, our experienced team always has a solution.

"I started with a list of over 50 potential companies and knew none of them. I brought my list down to 6 based on experience, license number and reviews. I intended to have 4 of those give me a bid but after Golden Retrofit (bid#2) I knew I was done. Selina knew so much more about the EBB process then the other 5 companies I spoke with. Andy gave me such a good Inspection and knowledge of my crawl space that I knew he crawled through every inch of my space. I've been under my house dozens and dozens of times. Kristina kept me informed of every step and handled my Deposit as well as Final Payment. Jordan was with me prior to the City Inspection and provided quickly each view the City Inspector needed to see. The Inspection Process was so Professional I knew they had down this before. I can't say enough about my experience with Golden Retrofit. In my humble opinion they Are The Best!"

Thomas B on February 2025


Avatar for Jose Flores Morales

Jose Flores Morales

4.90(
5
)
Approved Pro

Jose Flores Morales

4.90(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

We're dedicated to providing our clients with the very best in concrete installation and repair for driveways, sidewalks, patios, steps, and a variety of other projects. With over 15 years of industry experience, we take and enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.

"I had an excellent experience with Jose Flores Morales. He took over and corrected other work fromr a previous contractor. Jose took over the jobs and all the permits when no one else would and helped until I got the certificate of occupancy on two substantial deck/remodel projects. Since then he has helped me with many issues from drainage to waterproofing, indoor repairs and remodeling and so many various things on my rental property too numerous to mention. Best contractor I have ever dealt with by far. In my opinion he is a good person, he has a good crew, he can be trusted, is patient and is highly ethical. I highly recommend and continue to use him regularly."

Patti K on June 2017

We're dedicated to providing our clients with the very best in concrete installation and repair for driveways, sidewalks, patios, steps, and a variety of other projects. With over 15 years of industry experience, we take and enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.

"I had an excellent experience with Jose Flores Morales. He took over and corrected other work fromr a previous contractor. Jose took over the jobs and all the permits when no one else would and helped until I got the certificate of occupancy on two substantial deck/remodel projects. Since then he has helped me with many issues from drainage to waterproofing, indoor repairs and remodeling and so many various things on my rental property too numerous to mention. Best contractor I have ever dealt with by far. In my opinion he is a good person, he has a good crew, he can be trusted, is patient and is highly ethical. I highly recommend and continue to use him regularly."

Patti K on June 2017


Avatar for MVP Remodeling

MVP Remodeling

5.00(
42
)
Approved Pro

MVP Remodeling

5.00(
42
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
203 local quotes requested

At MVP Remodeling, we’re passionate about transforming houses into dream homes. With decades of experience, our dedicated team guides you through every step of the remodeling process, ensuring exceptional results. From home foundation and Roof to outdoor spaces and bathroom remodel, we’re committed to bringing your vision to life with precision and excellence. MVP Remodeling specializes in comprehensive foundation concrete services and innovative landscaping solutions. With a commitment to quality and durability, we offer expert foundation installation and repair, ensuring structural integrity for residential properties. MVP Remodeling’s skilled team delivers reliable, customized solutions, tailored to meet the unique needs of each client.

"Joseph and the team at MVP Remodeling did an incredible job on our backyard. We added a pergola, pavers, and lighting, and everything looks amazing. Joseph was organized and easy to work with, and his crew was respectful and clean. We finally have a backyard we’re proud of. Highly recommend MVP!"

Richard S on July 2025

At MVP Remodeling, we’re passionate about transforming houses into dream homes. With decades of experience, our dedicated team guides you through every step of the remodeling process, ensuring exceptional results. From home foundation and Roof to outdoor spaces and bathroom remodel, we’re committed to bringing your vision to life with precision and excellence. MVP Remodeling specializes in comprehensive foundation concrete services and innovative landscaping solutions. With a commitment to quality and durability, we offer expert foundation installation and repair, ensuring structural integrity for residential properties. MVP Remodeling’s skilled team delivers reliable, customized solutions, tailored to meet the unique needs of each client.

"Joseph and the team at MVP Remodeling did an incredible job on our backyard. We added a pergola, pavers, and lighting, and everything looks amazing. Joseph was organized and easy to work with, and his crew was respectful and clean. We finally have a backyard we’re proud of. Highly recommend MVP!"

Richard S on July 2025


Avatar for The Foundation Works

The Foundation Works

4.93(
162
)
Approved Pro

The Foundation Works

4.93(
162
)
Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
136 local quotes requested

Foundation inspection, repair, and replacement services for Los Angeles and surrounding cities for more than 20 years. With 800+ 5-star reviews online, we continue to provide affordable foundation inspection, foundation repair, foundation upgrades, foundation replacement, earthquake retrofitting, house bolting for the greater Los Angeles area; including affordable upgrades to your foundation. We pride ourselves in repairing only what your house foundation needs. We offer foundation upgrade services to get your house to full earthquake standards for the Los Angeles area without necessarily having to rebuild your full foundation, saving you thousands in unnecessary repair if at all possible.

"Great Team. Did a pro job."

Darryl S on June 2025

Foundation inspection, repair, and replacement services for Los Angeles and surrounding cities for more than 20 years. With 800+ 5-star reviews online, we continue to provide affordable foundation inspection, foundation repair, foundation upgrades, foundation replacement, earthquake retrofitting, house bolting for the greater Los Angeles area; including affordable upgrades to your foundation. We pride ourselves in repairing only what your house foundation needs. We offer foundation upgrade services to get your house to full earthquake standards for the Los Angeles area without necessarily having to rebuild your full foundation, saving you thousands in unnecessary repair if at all possible.

"Great Team. Did a pro job."

Darryl S on June 2025


Avatar for Alpha Structural

Alpha Structural

5.00(
11
)
Approved Pro

Alpha Structural

5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
69 local quotes requested

For over 25 years now, Alpha Structural, Inc. has developed a powerful reputation as the #1 Foundation Engineering and Repair, Landslide Repair, Earthquake and Structural Rehabilitation Contractor in the Los Angeles area. We have over 200 years of combined technical experience and all of it is hard-core and down-in-the-trenches, not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California.

"Amir gave us a great price, and did the work in a timely and professional manner"

Val H on July 2023

For over 25 years now, Alpha Structural, Inc. has developed a powerful reputation as the #1 Foundation Engineering and Repair, Landslide Repair, Earthquake and Structural Rehabilitation Contractor in the Los Angeles area. We have over 200 years of combined technical experience and all of it is hard-core and down-in-the-trenches, not managed from behind a computer. Our in-house engineers and technicians are among the most experienced in all of Southern California.

"Amir gave us a great price, and did the work in a timely and professional manner"

Val H on July 2023

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Earthquake Retrofitting questions, answered by experts

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.

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.

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

Depending on where you live, your insurance company may require you to have a seismic shut-off valve. It depends on local regulations along with the specific provider. If it’s not a requirement, many providers will offer a discount if you install an earthquake valve, which can save you 5% or more. Contact your provider to learn about potential savings for your plan.

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.

The Altadena, CA homeowners’ guide to earthquake retrofitting services

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

What do you need done? We’ll find top pros.
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