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Find Concrete foundation repairers in Portsmouth

Avatar for Groundworks
Groundworks
4.7(
22
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"The team that was sent smelled of weed, first thing I noticed. The work was done quickly, so that was good, but they didn't get an in process inspection and instead sent over an inspector more than a month after the work was done. The dirt that was displaced is just all over my yard now, and I have a bunch of big holes where they didn't pack any dirt. The company offered to fill them but I never heard back after that offer. As part of the work, they dug around the chimney, and it appears they caused it to break. They claim no damage was done, but I'm finding many pieces of concrete and brick strewn over my yard."
Foundation
Foundation
Foundation
Basement
Basement

+16

Response time12 hrs
141 neighbors recently requested a quote
Recommended by59%of homeowners
Sonart Construction Corp.
2.7(
3
)

Serving Portsmouth, 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 A 1 Foundation Crack Repair Inc
A 1 Foundation Crack Repair Inc
4.8(
83
)

Serving Portsmouth, NH and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"These guys were amazing from start to finish. The communication from beginning to end was exceptional. Joe arrived on the date agreed and was very punctual, He first explained very clearly the process that he was using and how effective it would be in preventing water from entering my basement through this crack in the foundation. He then proceeded with his work and did so quickly and efficiently leaving no mess behind. I am thoroughly impressed with A-1 and wholeheartedly and highly recommend their high quality services. Plus, with their 10 year warranty, you can rest comfortably. Without doubt, these guys are A1."
Recommended by93%of homeowners
Avatar for Maguire Masonry
Maguire Masonry
4.9(
169
)

Serving Portsmouth, NH and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"Peter was totally professional from start to finish. He was immediately responsive to emails; provided a quote in the given time frame, was punctual in all interactions; and delivered the services in two days as promised. His pricing was fair and reasonable and work quality outstanding. He and his employees completed the work and left the premises in a clean state. I would use Maguire Masonry again personally and would recommend him to others."
Recommended by98%of homeowners
Avatar for Besthands Landscape Construction & Design Inc
Besthands Landscape Construction & Design Inc
4.8(
20
)

Serving Portsmouth, NH and surrounding areas

In business since 2002

Free estimates

Emergency services offered

Besthands is passionately dedicated to the quality of every project we complete - from design to construction. We take your project seriously and we want no less then your satisfaction and peace of mind.\n\nBesthands is certified by ICPI and NCMA, our work has been recognized even by suppliers such as Ideal Concrete Block which features some of our work in their products catalog.\n\nBesthands continuously serves the surrounding areas of Massachusetts including but not limited to Easton, Boston, Hingham, Weymouth, and Quincy we also service Rhode Island. Contact us at 508-297-1066.

Recommended by95%of homeowners
Avatar for Southern Maine Masonry
Southern Maine Masonry
4.8(
35
)

Serving Portsmouth, NH and surrounding areas

In business since 1985

Free estimates

Warranties offered

"One word: Don't. They replaced the top 6' of our chimney about 7 years ago as well as parging and sealing all of our chimneys and the new chimney is literally falling apart in chunks, the joints are seeping water, and the parging is flaking off. Besides that, while these two jokers were here (and we weren't) our neighbor told us that they were arguing and throwing chunks of concrete at each other. We also found that rather than haul the old chimney pieces away they hid them in the brush beside our lawn. Also, forget about a warrantee. That is B.S."
Recommended by94%of homeowners
Avatar for Basement Systems of New Hampshire Inc
Basement Systems of New Hampshire Inc
4.4(
45
)

Serving Portsmouth, NH and surrounding areas

In business since 2002

Free estimates

Emergency services offered

All Things Basementy! Basement Systems Of NH Is Today One Of The Largest Basement Waterproofing, Basement Foundation Repair And Basement Finishing Contractors In New Hampshire And Massachusetts. We Are Family Owned And Committed To 100% Customer Satisfaction. We Pride Ourselves On Our Wide Variety Of Systems - Each Designed To Repair And Upgrade Your Basement, Crawl Space, Or Foundation. Call Us Today To Schedule a Free Estimate!

Recommended by91%of homeowners
Avatar for Jackson and Company Foundation Repair
Jackson and Company Foundation Repair
4.6(
17
)

Serving Portsmouth, NH and surrounding areas

In business since 1985

Free estimates

Emergency services offered

For 25 years we've been providing permanent and cost-effective solutions to one of the biggest problems facing homeowners: cracked and leaking concrete. From crack repair to sump-pumps to structural solutions, we have the experience and the knowledge to solve your foundation-related problems. Plus, our lifetime-of-the-structure gives you the peace of mind you want. When it’s repaired by us, it’s repaired forever.

Recommended by82%of homeowners
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FAQs for concrete foundation repair projects in Portsmouth, NH

Visible cracks, water leaks, uneven floors, or walls that won’t line up are classic red flags. You might also notice sticking windows, doors that no longer latch, or exterior cracks crawling up brick or siding. Even a damp, musty basement can hint at trouble. If you spot any of these, call a foundation pro right away. Early inspections cost far less than waiting until the damage threatens your home’s stability.

Yes, foundation problems impact your home’s value. Buyers want proof that the foundation is stable, and a recent, professional repair can actually boost confidence in your home. You’ll need to disclose the work, but documentation showing the structure was properly stabilized, especially with piers in regions known for shifting soil, often reads as a plus, not a problem. Skipping repairs, on the other hand, can cut your sale price and shrink the pool of interested buyers. Taking care of the issue protects both value and peace of mind.

Foundations are engineered for exceptional longevity when constructed correctly and maintained diligently. Concrete slab foundations remain structurally sound for 200 years, while other foundation types deliver integrity between 75 and 100 years. Regular professional inspections and timely maintenance further secure a foundation’s lifespan and ensure your home stays safe over the long term.

The Portsmouth, NH homeowners’ guide to concrete foundation repairs

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