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Best 5 Foundation Repair Companies in Sunnyvale, CA

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Written By Max Peterson | Last Updated: February 05, 2024

There's a lot to enjoy about living in Sunnyvale, but the city comes with some drawbacks. The heat in California brings the ground to crack, shifting foundations and giving local homeowners headaches. You should consult a foundation expert as soon as possible after noticing cracking or shifting walls. Discover Sunnyvale's most reputable foundation repair companies according to our thorough research.

5 Best Foundation Repair Companies in Sunnyvale

Lemon Remodeling & Services INC Logo

Lemon Remodeling & Services

Based on 22 customer reviews.

Services Offered

Inspection Concrete Foundation Repair Foundation Installation Grading Driveways


  • Helps educate customers
  • Good customer service
  • Free quotes
530 Lytton Ave # 200, Palo Alto, CA 408-883-0191 lemonremodeling.com
Attic City San Jose Logo

Attic City San Jose

Based on 27 customer reviews.

Services Offered

Radon Foundation Replacement Inspection Maintenance Grading Retaining Walls Sealing Vapor Barrier Foundation Installation Crawl Space Encapsulation Foundation Repair


  • Free quotes
  • Punctual service
  • Good customer service
1530 Southwest Expy Suite 221, San Jose, CA 650-535-1966 atticcrawlspacecleaning.com
Finest City Concrete Solutions Logo

Finest City Concrete Solutions

Based on 50 customer reviews.

Services Offered

Maintenance Sidewalks Leveling Retaining Walls Concrete Foundation Replacement Foundation Installation Driveways Grading Foundation Repair Garages


  • Good customer service
  • Transparent pricing
  • Free quotes
1111 Story Rd #252, San Jose, CA 408-617-5155 sanjoseconcrete.net
Design Everest Mountain View: Architecture and Engineering Services Logo

Design Everest Mountain View: Architecture and Engineering Services

Based on 81 customer reviews.

Services Offered

Retaining Walls Foundation Repair


  • Helps educate customers
  • Transparent pricing
  • Free quotes
365 Flower Ln, Mountain View, CA 650-447-1523 designeverest.com

More Local Foundation Repair Companies

BEAR Engineering

User Reviews: 4.7/5 

1825 S Grant St 2 Office 09-111
San Mateo, CA 94402

Peace of Mind Structural

User Reviews: 4.6/5 

180 South Blvd
San Mateo, CA 94402

The City Concrete Solutions

User Reviews: 4.7/5 

15250 Hesperian Blvd
San Leandro, CA 94578

Avalon Structural Inc

User Reviews: 4.7/5 

181 Ridge View Rd
Aptos, CA 95003

Tri-Valley Concrete Co

User Reviews: 4.6/5 

1704 Placer Cir
Livermore, CA 94551

MG Constructors & Engineers Inc.

User Reviews: 4.4/5 

1057 Cochrane Rd Suite 160-300
Morgan Hill, CA 95037

Rsl Structural Inc.

User Reviews: 4.7/5 

674 Easton Ave
San Bruno, CA 94066

Montclair Construction

User Reviews: 4.4/5 

3871 Piedmont Ave
Oakland, CA 94611

Mafileo Concrete

User Reviews: 4.7/5 

130 La Casa Via
Walnut Creek, CA 94598

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Sunnyvale
Average Max Temp: 71°F
Average Min Temp: 50°F
Average Monthly Precipitation: 1.74"
Percent of Homes With Basements 0%
Average Cost of Foundation Repair: $3,286
Average Cost of Foundation Waterproofing: $3,452

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

Common Causes of Foundation Problems in Sunnyvale

Foundation issues have multiple possible causes. Here are the top ones for Sunnyvale residents:

  • Standing water: Water accumulation around your home can be a menace to your foundation, especially when it gathers in areas your drainage system doesn't protect.
  • Aging plumbing: The average Sunnyvale home construction year is 1976. If you live in an older home, it's likely to have cast-iron plumbing. When the pipes start eroding, leaking water could reach your foundation and even pool beneath it.
  • Improper modifications: Roofing or landscaping work that wasn't done properly could result in your foundation settling.
  • Tree Roots: Tree roots can enter a home's foundation through crevices, and may apply force that leads to your foundation fracturing, pipes being damaged, and overall structural destabilization.

How to Choose the Best Foundation Repair Company

To select a foundation repair contractor, you should determine what's most important to you. Use this list of attributes to help you navigate the process.

Licensing and Experience

The Golden State issues many different kinds of contracting licenses, and foundation companies often have more than one. You can verify a company's licensing information through the Contractors State License Board, a division of the California Department of Consumer Affairs. Look for a company with a General Building Contractor, General Engineering Contractor, C-8 Concrete, or C-61 Pile Driving credential. Talk to representatives to gain further insight into a company's experience. You should ask about local inspection processes, permit ordinances and building codes.

Another way to evaluate a company's credibility is to examine its website. There, you can learn how long it's been in business and its trade qualifications. It might also share knowledge and insights through blog posts, podcasts, or videos.

Customer Reviews

Before choosing a company, examine its online profile with the Better Business Bureau (BBB). You can examine both positive reviews and complaints. Complaints don't mean a contractor is unreliable. BBB reviews show how the company handled complaints. It's a positive sign if the company has resolved issues favorably and proactively. You should stay away from a company with numerous negative reviews, no accreditation, and no communication regarding issues.

Foundation Repair Cost in Sunnyvale

The cost of foundation repair can vary quite a bit depending on the extent of the issues and what needs to be done to resolve them. For minor foundation fractures and settling issues, you may pay as little as $1,900. However, if there is considerable damage, the average cost will likely fall around $3,300. More complex jobs involving excavation, helical piers, or concrete leveling could cost $7,000 or more. See below the average foundation repair costs for common issues.

Common Foundation Repair Services Average Cost
Crack Repair $382
Leak Repair $3,120
Stabilization $5,443
Underpinning $1,462
Waterproofing $3,452

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Frequently Asked Questions About Foundation Repair in Sunnyvale

How much does foundation repair cost in Sunnyvale?

You could spend about $3,300 on materials and labor for your foundation project. Ultimately, your costs will depend on your specific needs and the extent of the damage.

When would I need a foundation replacement, and when could I just get a repair?

Most foundation issues don't require replacement to fix them. In unique cases, a foundation might require total restoration. However, if you pay attention to early warning signs like cracking walls or uneven doors, you probably won't need a new foundation.

What are some "red flags" indicating a foundation company to avoid?

There are several signs that you should avoid a particular foundation contractor. Watch out for inadequate credentials, unresponsiveness, poor online reviews, lack of insurance, and high-pressure sales tactics. Above all, trust your instincts, do your research, and get multiple estimates for the best possible decision-making power.

Will foundation repair disrupt my daily routine while the work's being done?

You don't need to leave your home for foundation repair. Today's technology allows exceptional results with reduced disruption and digging. However, the crew will still use heavy machinery, and you may still hear loud noises and feel vibration while they're working. If these would annoy you, you can always choose to leave and return when the crew is finished.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Foundation Resources

National Foundation Repair Ranking Methodology

Mold Remediation Cost Guide


U.S. Census Bureau (American Communities Survey)