Top-rated earthquake retrofitting specialists.

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Avatar for Silver Line Construction Plus

Silver Line Construction Plus

2006 Hill Crest Road Northwest
5.00(
11
)
Approved Pro

Silver Line Construction Plus

2006 Hill Crest Road Northwest
5.00(
11
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"They did a great job! My roof looks great! Reliable and kept me well informed about everything. They kept cost in mind and cleaned up nicely after themselves. Serge even came out late to tarp the roof until it could get repaired so that I didnâ t have any further damage to the house waiting for the roof. They were very nice to work with. Great people. I canâ t say enough good things about them!"

Sammi E on June 2024

With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"They did a great job! My roof looks great! Reliable and kept me well informed about everything. They kept cost in mind and cleaned up nicely after themselves. Serge even came out late to tarp the roof until it could get repaired so that I didnâ t have any further damage to the house waiting for the roof. They were very nice to work with. Great people. I canâ t say enough good things about them!"

Sammi E on June 2024





LNI Home

PO Box 12651
4.88(
8
)

LNI Home

PO Box 12651
4.88(
8
)
Customers say: True professional
17 years of experience

LNI Home offers free estimates for homeowners. We also conduct a zero money down 100% client satisfaction policy. Leads Now Inc will provide green products and top notch work done right the first time. www.lnihome.com

LNI Home offers free estimates for homeowners. We also conduct a zero money down 100% client satisfaction policy. Leads Now Inc will provide green products and top notch work done right the first time. www.lnihome.com


Bulwark Exterminating - Charlotte

2300 Stevens Mill Rd
4.75(
1,984
)

Bulwark Exterminating - Charlotte

2300 Stevens Mill Rd
4.75(
1,984
)
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

Bulwark is a family-owned company serving customers across the country. We provide quality customer service and a guarantee. If you see bugs after the initial service we will come back free of charge. Call us today, and we will earn your business through our professional technicians that are respectable and knowledgeable.

"I was greeted by Chris Atkinson with a smile when I came home and he had just arrived. He explained what he would be doing and went to work. Very happy with the service - thanks!"

Kathy M on May 2025

Bulwark is a family-owned company serving customers across the country. We provide quality customer service and a guarantee. If you see bugs after the initial service we will come back free of charge. Call us today, and we will earn your business through our professional technicians that are respectable and knowledgeable.

"I was greeted by Chris Atkinson with a smile when I came home and he had just arrived. He explained what he would be doing and went to work. Very happy with the service - thanks!"

Kathy M on May 2025

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.

Projects will vary based on size and scope, but an average earthquake retrofit takes between two weeks and two months. This includes the initial evaluation and plan, bidding and contract paperwork, permitting and approval process, actual work, and final inspection. Your contractor should give you a more accurate time estimate for your specific project, and they may be able to estimate how long the permitting process will take for your area.

It is not advisable to try to retrofit your home without the expertise of a professional. These projects usually require a consultation with a structural engineer and a plumber for any gas-related adjustments. Working with a professional earthquake retrofitting contractor is the best way to ensure that any structural work done to your home will help protect you and your family.

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.

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.

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The Alexis, NC homeowners’ guide to earthquake retrofitting services

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