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11 Best Foundation Companies in Diamond Bar, CA

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Written By Bradford Cuthrell

Last Updated February 2024

While foundation repair is usually costly and time-consuming, not fixing foundation problems could lead to serious, expensive consequences later on. Foundation issues may be more common if your home is in an area like Diamond Bar, which sees less rainfall and has drier soil.

As a helpful resource for local homeowners, we’ve compiled and reviewed a list of top-rated and recommended foundation repair companies in your area. Continue reading our recommendations to find the best foundation repair companies in Diamond Bar, California.

Our Recommended Providers

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  • Offers free in-person and virtual evaluations
  • 87+ years of industry experience
  • All repairs backed by a lifetime transferable warranty

Top 11 Best Foundation Companies in Diamond Bar

Upland Concrete Company

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100 N Laurel Ave #426, Upland, CA 91786 (909) 417-7918 concreteupland.com

Transparent pricing

Good customer service

Free quotes

Helps educate customers

Services Offered

Grading and leveling
Concrete
Waterproofing
Sealing
Driveways
Masonry
Repair
Retaining walls

All American Traditions Foundation Repair, Inc.

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1042 N Mountain Ave B-180, Upland, CA 91786 (909) 957-9192 foundationrepairshop.com

Helps educate customers

Good customer service

Free quotes

Transparent pricing

Services Offered

Inspection
Crawl space encapsulation
Repair
Concrete
Retaining walls

West Coast Concrete Services

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21520 Yorba Linda Blvd # 416, Yorba Linda, CA 92887 (714) 532-0816 west-coastconcrete.com

Free quotes

Transparent pricing

Helps educate customers

Good customer service

Punctual service

Services Offered

Repair
Grading and leveling
Retaining walls
Sidewalks
Driveways
Inspection
Masonry
Concrete

DG Construction

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21631 Golden Poppy Ct, Walnut, CA 91789 (840) 201-7395 mydgconstruction.com

Good customer service

Helps educate customers

Transparent pricing

Punctual service

Services Offered

Concrete
Driveways
Repair
Sidewalks

Alpha Structural, Inc.

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23031 E La Palma Ave, Yorba Linda, CA 92887 (714) 410-5611 alphastructural.com

Helps educate customers

Transparent pricing

Punctual service

Good customer service

Services Offered

Inspection
Retaining walls
Repair
Sealing
Grading and leveling
Concrete
Masonry
Waterproofing
Crawl space encapsulation

Geobear Foundation Repair

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22603 La Palma Ave Suite 302, Yorba Linda, CA 92887 (877) 436-2327 geobear.us

Punctual service

Transparent pricing

Free quotes

Good customer service

Helps educate customers

Services Offered

Masonry
Concrete
Retaining walls
Grading and leveling
Repair

RCCI dba Ramirez Company

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778 N, 778 Georgia Ave, Azusa, CA 91702 (626) 969-7530 rccico.com

Helps educate customers

Free quotes

Transparent pricing

Services Offered

Concrete
Repair

Tuff Kote Systems

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2969 E Coronado St, Anaheim, CA 92806 (714) 522-7341 tuffkote.com

Transparent pricing

Good customer service

Services Offered

Driveways
Grading and leveling
Sidewalks
Concrete
Waterproofing
Repair

California Building Innovations

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1407 N Batavia St # 108, Orange, CA 92867 (888) 552-7571 californiabuildinginnovations.com

Transparent pricing

Helps educate customers

Good customer service

Free quotes

Services Offered

Driveways
Inspection
Concrete
Repair

Newbuild Construction and Restoration Inc

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625 W Katella Ave #27, Orange, CA 92867 (714) 332-2405 newbuildrenovations.com

Free quotes

Good customer service

Helps educate customers

Punctual service

Transparent pricing

Services Offered

Retaining walls
Mold remediation
Grading and leveling
Repair

Cal Star Mobile Home Construction

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1820 Railroad St, Corona, CA 92878 (951) 525-1598 calstarmobile.com

Transparent pricing

Good customer service

Punctual service

Free quotes

Services Offered

Grading and leveling
Repair
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on foundation companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How To Choose a Foundation Repair Company

Working with a qualified foundation repair provider is important for accurately evaluating the damage and completing repairs correctly. We recommend focusing on these key factors.

Experience

We suggest choosing a local foundation repair provider with a well-established track record of fixing various foundation issues. These companies should have expertise in the latest techniques and materials. Ask providers how long they've served your area.

Reputation

Carefully reading online reviews, checking the Better Business Bureau, and asking for local references helps confirm that a provider consistently delivers high-quality work and good customer service. Pay attention to any complaints about poor service or faulty repairs.

Licensing and Insurance

Only hire providers that are properly licensed, bonded, and have both workers compensation and liability insurance. In California, general contractors are required to be licensed by the Contractors State License Board in order to work on projects valued at $500 or more. To obtain a license, an individual needs to have at least four years of related work experience in the last decade (or be represented by someone who does), must pass both a law and business and a trade exam, and must be bonded. If an individual or business has employees, workers' compensation insurance is also required. There may be additional requirements for contractors to do certain work with concrete.

Warranties

Choose a provider that offers transferable warranties of at least a decade, ideally lifetime guarantees, to back their foundation repairs. This demonstrates that they stand behind the quality of their repairs and offers protection if future issues arise.

Questions To Ask Foundation Repair Companies

To compare foundation repair professionals, you should ask detailed questions such as:

  • What warranties do you provide? Reputable providers usually provide labor and materials warranties of at least 10 years.
  • Can you provide a complete written project scope and cost estimate? Getting quotes in writing helps protect you from unexpected costs.
  • What foundation defects did you identify during inspection that may be causing the issue? The response should have easy-to-understand explanations and solutions. If a provider offers an unclear answer, it may be attempting to bill you for unnecessary work.
  • What options do you offer for financing? Providers often offer payment plans for larger foundation repairs.
  • Realistically, how long will the repairs take to complete? Look for companies that provide reasonable estimates.
  • What repair method would you recommend for my specific situation and why? Your provider may consider options such as steel piers, carbon fiber, and wall anchors. By asking, you can get an idea of what solutions a company offers and compare between providers.

Carefully assessing foundation repair companies helps homeowners locate the best fit for their needs. A company that can answer the above questions likely performs durable, long-lasting repairs. Fixing foundation problems quickly lowers the risk of future structural damage.

Frequently Asked Questions About Foundation Repair in Diamond Bar, CA

If your foundation needs repairs, you may notice a number of symptoms. Outside your home, you might see a crumbling or cracking foundation or cracks in your driveway. Your ground level may have cracked or uneven floors. You might notice doors or windows sticking in their frames, or that the frames are skewed. You may also notice bowing, buckling, or cracking walls.

On average, Diamond Bar homeowners spend roughly $2,704 on foundation repair. The cost of foundation repair is based on several factors. Things like the extent of the damage, the type of repair needed, and the size of your home will all help determine the cost. The best way to determine how much a job may cost is to contact a local foundation repair expert and schedule a free inspection and estimate.

The primary types of foundation repair are crack repair, leak repair, underpinning, stabilization, and waterproofing.

Crack repair and leak repair are exactly as they sound: your foundation contractor will perform an inspection and take necessary measures to remedy cracks or leaks. The price will vary based on the size and cause of the problem.

Underpinning, also called piering or leveling, is the process of leveling your foundation by underpinning it with large concrete piers. The amount you can expect to spend depends on how many piers are needed. The price of stabilization is also variable. This process reinforces bowing walls with steel or carbon fiber strips. The total cost will depend on the material chosen and how many strips are used.

Finally, waterproofing is an overarching term for a category of repairs that help stop water from getting into your foundation. This can include exterior waterproofing, interior waterproofing, or both, and costs can vary greatly. We recommend contacting a waterproofing specialist if you're planning to waterproof your foundation.

One way to protect your foundation is to make sure it has the right amount of moisture, especially in hot weather. Diamond Bar tends to be a very dry place, so in times of little rain you may need to water your foundation. Also make sure that you quickly identify and repair any leaking pipes or gutters.

If you have any concerns about your foundation, you can reach out to a structural engineer for an evaluation. This will run you a few hundred dollars, but the engineer's consultation can net you a list of potential concerns as well as more ideas to help you further protect your foundation. Lastly, if you're constructing a new home, ensure to have a soil report done. This report provides information regarding how well the soil on your property will be able to support a foundation and highlights any potential future problems.

Permits are needed for most foundation repairs, but acquiring one shouldn't be your responsibility. Your foundation repair provider should get all the permits and other documents required in Diamond Bar, and should be able to explain the process and/or provide the documents if asked.

In most cases, home insurance doesn't cover foundation repairs, unless the repair is to fix damage resulting from a covered weather event. We strongly suggest talking to your home insurance company before starting any foundation repairs.

Foundation repair, particularly extensive repairs such as basement waterproofing, should last a long time. This is especially true if you choose a reputable company. By solving systemic foundation issues, or reinforcing critical areas, you lower the risk of future problems.

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