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Earthquake Retrofitting reviews from real Angi homeowners in Sandown, NH

Last update on October 15, 2025

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SSG Pools

12 Esquire Rd
4.00(
20
)

SSG Pools

12 Esquire Rd
4.00(
20
)
Customers say: Quality work
50 years of experience

SSG, or South Shore Gunite Pools, is New England's largest pool builder. We offer building, renovation and maintenance services to residential and commercial clients throughout New England. Headquartered in North Billerica MA, we have been setting the standard for gunite construction and quality swimming pools since 1975. We are shockingly unique in the way that we build, eliminating the uncertainty of relying upon subcontractors and operating with fully in-house employees. This strategy allows us to take full responsibility for our client's projects.

"Hired this company for summer 2019 to open/close and clean weekly. In the month we used SSG, the pool was not cleaned properly once. 25 tiles were damaged mysteriously upon open, there were leaves and dirt left in the pool the entire time and we have not been able to use the pool yet. We expressed our disappointment and gave them more than enough chances to rectify things. They didn't. Pictures attached are from our pool and spa today - after the tech "cleaned" and left a bill for over $200. Absolutely horrible. Terminated contract."

Lynn S on June 2019

SSG, or South Shore Gunite Pools, is New England's largest pool builder. We offer building, renovation and maintenance services to residential and commercial clients throughout New England. Headquartered in North Billerica MA, we have been setting the standard for gunite construction and quality swimming pools since 1975. We are shockingly unique in the way that we build, eliminating the uncertainty of relying upon subcontractors and operating with fully in-house employees. This strategy allows us to take full responsibility for our client's projects.

"Hired this company for summer 2019 to open/close and clean weekly. In the month we used SSG, the pool was not cleaned properly once. 25 tiles were damaged mysteriously upon open, there were leaves and dirt left in the pool the entire time and we have not been able to use the pool yet. We expressed our disappointment and gave them more than enough chances to rectify things. They didn't. Pictures attached are from our pool and spa today - after the tech "cleaned" and left a bill for over $200. Absolutely horrible. Terminated contract."

Lynn S on June 2019

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.

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.

Some cities or states may require you to have an earthquake gas shut-off valve. Your insurance provider may also have requirements for installing this valve. Even if you don’t have to have one by law, it’s wise to have a natural gas plumber install one anyway. These devices can be lifesaving and prevent fires or explosions in the event of a gas leak.

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.

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.

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The Sandown, NH homeowners’ guide to earthquake retrofitting services

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