Top-rated earthquake retrofitting specialists.

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Verified Reviews for Earthquake Retrofitting pros in Greenbelt, MD

*The Angi rating for Earthquake Retrofitting companies in Greenbelt, MD 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 Greenbelt, MD 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 October 04, 2025

Find Earthquake retrofitting specialists in Greenbelt

Triple J Consulting LLC

12021 Golden Twig Ct
5.00(
9
)

Triple J Consulting LLC

12021 Golden Twig Ct
5.00(
9
)
Customers say: Quick response
3 years of experience

Triple J Consulting is a limited liability company that provides structural and civil engineering services.

"Exceptional level of service. Very professional in approach and provided a thorough report. Would definitely use again!"

JOHN M on September 2024

Triple J Consulting is a limited liability company that provides structural and civil engineering services.

"Exceptional level of service. Very professional in approach and provided a thorough report. Would definitely use again!"

JOHN M on September 2024

1 ENTERPRISE LLC

1402 North Capitol Street NW
No reviews yet

1 ENTERPRISE LLC

1402 North Capitol Street NW
No reviews yet
14 years of experience

To approach each project with a supportive mindset, working with clients, architects and subcontractors toward the common goal - successful project delivery. Our priority is to be certain we can meet the needs and expectations of our clients qualitatively and financially. As a Minority, Women owned full service general contractor, we specialize in all facets of commercial contracting; including renovation projects and new construction, as well as construction management

To approach each project with a supportive mindset, working with clients, architects and subcontractors toward the common goal - successful project delivery. Our priority is to be certain we can meet the needs and expectations of our clients qualitatively and financially. As a Minority, Women owned full service general contractor, we specialize in all facets of commercial contracting; including renovation projects and new construction, as well as construction management

Applied Ingenious Corporation

24428 Permian Circle
No reviews yet

Applied Ingenious Corporation

24428 Permian Circle
No reviews yet
13 years of experience

Applied Ingenious Corporation (AIC) is a Virginia-based minority, woman-owned small business providing engineering consulting services based on a wide range of experience in building design and rehabilitation projects. AIC is licensed as a Professional Engineering firm in District of Columbia and Commonwealth of Virginia.

Applied Ingenious Corporation (AIC) is a Virginia-based minority, woman-owned small business providing engineering consulting services based on a wide range of experience in building design and rehabilitation projects. AIC is licensed as a Professional Engineering firm in District of Columbia and Commonwealth of Virginia.

AJ Ross Service

5406 Riverdale Rd
No reviews yet

AJ Ross Service

5406 Riverdale Rd
No reviews yet
Free onsite estimate

We understand how important trust is in a contractor/client relationship. We have a record of integrity, expertise and customer satisfaction. Our commitment to this is proven by the fact that returning clients account for more than half of our business every year. Our clients value the relationship we build with them and recognize our commitment to quality, budget and schedule. Clients who utilize us for one project return to AJ Ross General Contracting Services for all their future remodeling, restoration, or renovation needs.

We understand how important trust is in a contractor/client relationship. We have a record of integrity, expertise and customer satisfaction. Our commitment to this is proven by the fact that returning clients account for more than half of our business every year. Our clients value the relationship we build with them and recognize our commitment to quality, budget and schedule. Clients who utilize us for one project return to AJ Ross General Contracting Services for all their future remodeling, restoration, or renovation needs.

Kolb Electric Inc

8530 Cinder Bed Rd
4.22(
216
)

Kolb Electric Inc

8530 Cinder Bed Rd
4.22(
216
)
Customers say: Super punctual
205 local quotes requested

We are a family owned and operated business that has been serving the Baltimore, Washington Metropolitan area since 1925. We are committed to providing superior electrical services. The valuable advantages we can offer you are great service, high quality and experienced workers at a competitive price.

"Do not use this company. They will rip you off. The contract was for eight 300W LED 40 ft pole lights, but I caught them redhanded installing 240W. Who does that? Then, they broke my lock and broke into my sprinkler room which I saw on my video which they admitted. Then, Kolb sued me for not paying the bill which I disputed due to lost tools as result of the break-in. Who does that breaking into a customer's sprinkler room and not informing that they did. I had to catch them on my video. Not only that it took over one year to the work proposed work. TOTAL FRAUD. I will be going to court...."

John A on November 2023

We are a family owned and operated business that has been serving the Baltimore, Washington Metropolitan area since 1925. We are committed to providing superior electrical services. The valuable advantages we can offer you are great service, high quality and experienced workers at a competitive price.

"Do not use this company. They will rip you off. The contract was for eight 300W LED 40 ft pole lights, but I caught them redhanded installing 240W. Who does that? Then, they broke my lock and broke into my sprinkler room which I saw on my video which they admitted. Then, Kolb sued me for not paying the bill which I disputed due to lost tools as result of the break-in. Who does that breaking into a customer's sprinkler room and not informing that they did. I had to catch them on my video. Not only that it took over one year to the work proposed work. TOTAL FRAUD. I will be going to court...."

John A on November 2023

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Earthquake Retrofitting questions, answered by experts

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.

Grounding is a great first step to prevent electrical shock, but you can take it further with GFCI outlets and AFCIs (arc fault circuit interrupters). In particular, AFCIs help protect against the type of electrical arcs that cause fires, like if a mouse chews on a wire or your laptop starts overheating at the wall. These are required in some areas of your home.

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.

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.

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.

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The Greenbelt, MD 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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