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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon35
    Verified foundation repairs reviews

Find Foundation repair specialists in Portsmouth

Avatar for Groundworks

Groundworks

3 Eastpoint Dr Hookset
4.74(
93
)
Approved Pro

Groundworks

3 Eastpoint Dr Hookset
4.74(
93
)
Approved Pro
Customers say: Quick response
30 local quotes requested
29 years of experience

Groundworks, previously Rescon Basement Solutions, specializes in helping homeowners with their foundation repair, basement waterproofing, and crawl space encapsulation needs. Our top priority is providing high-quality home repair solutions and personalized service across New Hampshire and Massachusetts. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation or basement.

"Everything went very well. Josh, Dave and Tommy were very professional, efficient, and always willing to answer any questions I had. I can't recommend them highly enough."

Ken C on August 2025

Groundworks, previously Rescon Basement Solutions, specializes in helping homeowners with their foundation repair, basement waterproofing, and crawl space encapsulation needs. Our top priority is providing high-quality home repair solutions and personalized service across New Hampshire and Massachusetts. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation or basement.

"Everything went very well. Josh, Dave and Tommy were very professional, efficient, and always willing to answer any questions I had. I can't recommend them highly enough."

Ken C on August 2025


Avatar for Capstone Masonry and Construction

Capstone Masonry and Construction

75 Arlington Street
New on AngiNew on Angi
Approved Pro

Capstone Masonry and Construction

75 Arlington Street
New on AngiNew on Angi
Approved Pro
46 local quotes requested
13 years of experience

Hear at capstone masonry and construction we Drive to Build a better business and keep Our customers trust and Loyalty From start to finish. We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

Hear at capstone masonry and construction we Drive to Build a better business and keep Our customers trust and Loyalty From start to finish. We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!


Demolition, Carpentry, Decks, Siding, Roofing, Home improvement, Site work & more! 8 years of experience serving your community


Avatar for River View Construction Co.

River View Construction Co.

No reviews yet

River View Construction Co.

No reviews yet

Welcome to River View Construction Co. Established in 2014 - We offer General Contracting, Excavation, Forestry Services, Plowing & Sanding. We are fully insured & reputable. We strive to provide an elite experience, seamless, professional & with sense of urgency.

Welcome to River View Construction Co. Established in 2014 - We offer General Contracting, Excavation, Forestry Services, Plowing & Sanding. We are fully insured & reputable. We strive to provide an elite experience, seamless, professional & with sense of urgency.


Avatar for Bradford Home Services

Bradford Home Services

145 S. Main St
No reviews yet

Bradford Home Services

145 S. Main St
No reviews yet
1 years of experience

Bradford Home Services is your personal maintenance company for your home, condo, rental property, or seasonal property! Born from our sister company Bradford Construction Management, you can trust your home is being reviewed by seasoned home builders! We have over 70 years of experience in the residential construction market, building high end homes, from design to finish. Take advantage of our bi-annual assessments for only $25/Month! We will review your whole home Exterior, Interior, plumbing, electrical, heating etc! we will then send you a detailed report with pictures, videos, and recommendation on fixes! But it doesn't stop there, we can price and repair any aspect of your home!

Bradford Home Services is your personal maintenance company for your home, condo, rental property, or seasonal property! Born from our sister company Bradford Construction Management, you can trust your home is being reviewed by seasoned home builders! We have over 70 years of experience in the residential construction market, building high end homes, from design to finish. Take advantage of our bi-annual assessments for only $25/Month! We will review your whole home Exterior, Interior, plumbing, electrical, heating etc! we will then send you a detailed report with pictures, videos, and recommendation on fixes! But it doesn't stop there, we can price and repair any aspect of your home!


Steppingstones Masonry

No reviews yet

Steppingstones Masonry

No reviews yet
26 years of experience

At Steppingstones Masonry, we're your trusted partner in masonry craftsmanship, bringing beauty, strength, and timeless elegance to every project. We specialize in preserving, restoring, and enhancing historical and residential masonry structures, ensuring they stand the test of time.

At Steppingstones Masonry, we're your trusted partner in masonry craftsmanship, bringing beauty, strength, and timeless elegance to every project. We specialize in preserving, restoring, and enhancing historical and residential masonry structures, ensuring they stand the test of time.


Avatar for LeBlanc Basement Waterproofing

LeBlanc Basement Waterproofing

Based In
5.00(
3
)

LeBlanc Basement Waterproofing

Based In
5.00(
3
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We specialize in basement waterproofing, for residential and commercial properties! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Our custom waterproofing systems come backed with a lifetime transferable warranty! Increase the value of your home and give us a call to schedule a free inspection today! It's money in the bank when you call LeBlanc!

"He was awesome hard working and was better then I thought great customer service"

Tom M on April 2023

We specialize in basement waterproofing, for residential and commercial properties! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Our custom waterproofing systems come backed with a lifetime transferable warranty! Increase the value of your home and give us a call to schedule a free inspection today! It's money in the bank when you call LeBlanc!

"He was awesome hard working and was better then I thought great customer service"

Tom M on April 2023


Avatar for 603 Basement Solutions

603 Basement Solutions

5.00(
4
)

603 Basement Solutions

5.00(
4
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

With over 31 years of experience 603 Basement Solutions specializes in Basement Waterproofing, Crawlspace Moisture control, and Concrete foundation repair. When you hire 603 you can expect Courtesy, Professionalism, Honesty, Integrity and a whole team showing up with smiles. We can't wait to solve your problems.

"When looking at different companies to waterproof my basement prior to finishing it 603 was leaps and bounds better than the rest.  These guys know their stuff, couldnt be happier with my choice!"

Chris M on November 2022

With over 31 years of experience 603 Basement Solutions specializes in Basement Waterproofing, Crawlspace Moisture control, and Concrete foundation repair. When you hire 603 you can expect Courtesy, Professionalism, Honesty, Integrity and a whole team showing up with smiles. We can't wait to solve your problems.

"When looking at different companies to waterproof my basement prior to finishing it 603 was leaps and bounds better than the rest.  These guys know their stuff, couldnt be happier with my choice!"

Chris M on November 2022



Avatar for New Hampshire Groundscapes

New Hampshire Groundscapes

73 King Rd
5.00(
2
)

New Hampshire Groundscapes

73 King Rd
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

NHG is your local excavation & site work company. We offer many different services such as septic system installs/ replacements & designs, site work for new houses, garages, additions & commercial buildings. NHG also provides concrete foundation services. We can accomplish the site work for your project and install the foundation & concrete floor as well. We are your one stop shop!! Other services that we offer are yard/ driveway & parking lot grading/ expansion, stumping, pool pads, tree removal, sink hole dig out & fill, ledge hammering, water/sewer line services/repairs, & much more. We take great pride in providing our customers with very competitive prices and always deliver satisfactory results! Visit our website and Facebook for reviews and pictures of completed and ongoing projects.

"Great. will use them again."

Cheryl D on November 2020

NHG is your local excavation & site work company. We offer many different services such as septic system installs/ replacements & designs, site work for new houses, garages, additions & commercial buildings. NHG also provides concrete foundation services. We can accomplish the site work for your project and install the foundation & concrete floor as well. We are your one stop shop!! Other services that we offer are yard/ driveway & parking lot grading/ expansion, stumping, pool pads, tree removal, sink hole dig out & fill, ledge hammering, water/sewer line services/repairs, & much more. We take great pride in providing our customers with very competitive prices and always deliver satisfactory results! Visit our website and Facebook for reviews and pictures of completed and ongoing projects.

"Great. will use them again."

Cheryl D on November 2020

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Foundation Repair questions, answered by experts

Barring extreme home foundation problems, most horizontal foundation cracks are fixable using one or more methods. Most of the repair methods require professional expertise to accomplish, and include plate anchors, steel reinforcement, soil anchors, reconstruction, or carbon fiber strip applications. Contacting a professional to diagnose the problem early can minimize repair expenses.

It’s usually not a big deal if your foundation sinks between 2 and 3 inches into the ground after construction, provided the settlement occurs evenly. This is usually indicative of normal settlement that occurs as the soil under your home adapts to the weight of the structure. If the home sinks more into the ground or the settlement occurs unevenly, leaving portions of your home to sink further down than others, then call a foundation repair specialist to address the issue and avoid additional damage.

Crawl space foundation problems can stem from a few different issues, but the most common are moisture and water problems and soil instability. Moisture and water issues are often a result of poor drainage, which can lead to water intrusion and soil expansion and contraction, leaving your foundation under added stress. A few things can cause soil instability, including poor drainage, karst landscapes and resulting sinkholes, and poorly compacted soil during construction.

Yes, slab leaks are fairly common, especially in older homes and places that are prone to earthquakes which can move home foundations.

No, house settling is normal as your home’s foundation settles into the soil below and as the framing of your home shifts as it expands and contracts with changes in temperature and moisture. However, if you get to the point where your doors and windows aren’t opening easily, your floors are uneven, or you can visibly see that your roof line is wavy or uneven, you are more likely to have foundation issues.

The Portsmouth, NH homeowners’ guide to foundation repairs

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