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Top-Rated Concrete foundation installers in Alton Bay - Updated Nov 2026

Avatar for 3 Brothers Masonry
3 Brothers Masonry
4.6(
13
)
Concrete Foundation - Install

Serving Alton Bay, NH and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"I was so impressed with THRE BROTHERS MASONRY everything was explained to me on details price was fair and the gentlemen were so kind and professional I highly recommend this company."
Additional Photos
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+12

Response time2 days
Response rate100%
Recommended by66%of homeowners
Avatar for Four Seasons Masonry And ChimneyConstruction
Four Seasons Masonry And ChimneyConstruction
5.0(
3
)
Concrete Foundation - Install

Serving Alton Bay, NH and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"????? Outstanding Work ? Highly Recommend Four Seasons I recently hired Four Seasons to waterproof my foundation, and I couldn't be happier with the results. From start to finish, they did an excellent job. The crew was professional, hardworking, knowledgeable, and took pride in their work. They did a fantastic job waterproofing the foundation paid attention to the details, and made sure everything was done right. It's not always easy finding a company you can trust, but Four Seasons definitely delivered. The quality of their workmanship and the overall experience exceeded my expectations. I would highly recommend Four Seasons masonry chimney foundation to anyone looking for professional, reliable foundation waterproofing. They did a great job, and I wouldn't hesitate to hire them again! Thank you to the entire Four Seasons team for a job well done!"
Chimney repairs
Chimney repairs
Chimney repairs
Chimney repairs
Chimney repairs

+3

Sonart Construction Corp.
2.3(
7
)
Concrete Foundation - Install

Serving Alton Bay, NH and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"I recently had my shingle roof replaced and I?m very happy with the results. The team was professional, punctual, and completed the job efficiently. The quality of the work is excellent, and the new roof looks great. They kept the work area clean and communicated well throughout the process. I would definitely recommend them to anyone needing a roof replacement."
Avatar for ZRC Enterprise LLC
ZRC Enterprise LLC
New to Angi
Concrete Foundation - Install

Serving Alton Bay, NH and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's custom needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Barrington Frost post
Barrington Frost post
2 neighbors recently requested a quote
Avatar for Jackson and Company Foundation Repair
Jackson and Company Foundation Repair
4.5(
20
)
Concrete Foundation - Install

Serving Alton Bay, NH and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"Great! Richard had a cancellation and asked if he could come in that time slot. We were delighted. He was prompt. Richard is knowledgeable, explained everything he was going to do, was very professional and friendly. He worked both inside and outside. The job looks very solid. Our realtor came over a few days later ( we are selling our house in the spring) and was very impressed with the workmanship. I would highly recommend Jackson Foundation Repair."
Additional Photos
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+4

Recommended by82%of homeowners
Avatar for Green Mountain Basement Solutions LLC
Green Mountain Basement Solutions LLC
4.0(
30
)
Concrete Foundation - Install

Serving Alton Bay, NH and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"We have had an intermittant water problem in our basement primarily when it rains heavily in the Winter.
I was very happy with the quick response from Mike Sears when we initially called to ask about repairing a water leak problem in our basement.  Mike explained how his proposed solution would work to alleviate the water problem. 
Mike left us with a detailed estimate and informational materials about the proposed repair.  He also explained what wasn't included in the job such as tearing out the current sheetrock, insulation and framing from the wall.  I did  this part of the work and the reconstruction after the drain had been installed.
We spoke to Mike a few days later, agreed to the price and set a date for the repair.
On the scheduled date, two of Mikes employees arrived on time and began to prep for the repair.  They did a good job of hanging plastic sheeting around their work area so that the dirt and dust would not get into the rest of the basement.
We had discovered a crack in the basement wall which wasn't visible when the original estimate was given.  Scott Lee gave  us a written estimate to repair it with carbon-fiber cloth and sealant.  While this was an unexpected expense, there was no reason to put in a drain and leave a crack in the wall.
Taking out a basement floor with a jackhammer and installing a drain is a hard, dirty job.  Scott and his co-worker completed this job in about 6 1/2 hours including the additional work for the wall crack.
They did a good job of cleaning up the old concrete and all working materials 
Scott explained how the pump would work when the water table under the house rose.  
My only issue with quality was the uneven concrete finish work on the basement floor above the drain.  Because this was leveled by hand, there is a somewhat noticeable depression in this area of the floor.
Overall, I am happy with the work and looking forward to a dry basement when the rains come this spring.


"
Recommended by75%of homeowners
Avatar for St. John enterprise
St. John enterprise
5.0(
6
)
Concrete Foundation - Install

Serving Alton Bay, NH and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"St John Enterprise provided a professional service at an affordable price. Their communication and customer skills are excellent. They showed up on time and worked efficiently to deliver high quality work. The patio and front step have received many compliments, and truly exceeded my expectations. I will definitely hire these guys again any time I need concrete work done!"
Sidewalk
Basement garage duo
Sidewalk/apron
Concrete - Stamped & Decorative Project
Concrete - Stamped & Decorative Project

+73

Recommended by100%of homeowners
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FAQs for concrete foundation installation projects in Alton Bay, NH

A concrete footer is a relatively shallow column of concrete that sits below your foundation walls. Footers spread wider than the foundation, so they can support a higher amount of weight in critical spots, such as below walls. The exact dimensions of footers depend on the home, so larger structures need a larger footing.

To calculate footing size, you need to know the minimum width and depth for houses in your region. Multiplying the width by the linear footprint of the structure will give you the size in linear feet.

To convert linear feet into square feet, you can divide the width by 12. For example, an 18-inch footer is 1.5 square feet per linear foot. Multiply this number by the total in linear feet to get the answer in square feet.

Installing a pier and beam foundation costs $5 per square foot, or $8,000 to $15,000. This style is standard in homes built before the 1960s or those in flood-prone areas.

Concrete weight support ranges from 1,500 to 6,500 pounds per square inch, and footings need at least 3,500 to 4,500 pounds per square inch. Remember that your soil type, climate, and materials used will significantly affect how much weight your footings can hold, especially in certain areas.

It costs between $1,600 and $3,200 to pour a 20-by-20-foot concrete slab. These estimates are based on an average cost to pour a concrete slab of $4 to $8 per square foot. Be sure to discuss the specifics with a pro—they’ll give you an estimate of how much you can expect.

The cost to raise a house is between $3,200 and $10,000. This range refers to a form of repair that involves lifting the entire house to potentially remove the old foundation and build a new one or add to an existing one.

The Alton Bay, NH homeowners’ guide to concrete foundation installations

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