Find a foundation contractor in San Francisco, CA

Find foundation companies in San Francisco, CA

Find foundation companies in San Francisco, CA

Share a few details and we'll show you the best foundation contractors in your area.
Zip code

Find foundation companies in San Francisco, CA

Share a few details and we'll show you the best foundation contractors in your area.
Zip code

Top 10 foundation contractors in San Francisco, CA

Homeowners agree: these San Francisco foundation companies are highly rated for knowledge, experience, communication, and more.
Moana Concrete

Moana Concrete

5.0Exceptional(6)
7 hires on HomeGuide
24+ years in business
Serves San Francisco, CA
Eugene C. says, "Communicative and on time. Friendly and personable. Let me know of what can be done and how before starting. Matched my existing stamped concrete. Fence was extended as well and exceeded my expectations. Highly recommended." Read more
AMK Concrete

AMK Concrete

5.0(3)
3 hires on HomeGuide
21+ years in business
Serves San Francisco, CA
Howard H. says, "AMK Concrete built a 460 sqft concrete/tile courtyard for us. They also painted our home’s exterior fascia and soffit. Ramon and his crews did an outstanding job from start to finish. They are professional, capable, diligent, flexible and very accommodating. It was a great pleasure working with Ramon and his crew throughout the project. We’re very happy with the final work product and would highly recommend their service to anyone needing concrete, tiling and painting work. Thank you." Read more
We Can Do Better Landscaping

We Can Do Better Landscaping

New on HomeGuide
19+ years in business
Serves San Francisco, CA
Hello my name is Carlos a lot of people know me as tito or Cosito I been in this business for over 15 years I always walkthrough my process with the home owners and make sure they love what I am doing for them and make them happy I have worked with many people and my goal has always been to satisfy my customers and I like to explain to them my process and what I am doing and how long it would take me I also like to explain material and what it's best for each person. Love what I do and love to always learn new things...

Your Foundation Contractors questions, answered

Answers to commonly asked questions from the experts on HomeGuide.

How much does it cost to install a foundation?

The cost to install a foundation depends on the type of foundation installed. The most common types of foundations are concrete slabs, pier and beam, crawl space, and basement foundations.

  • A concrete slab foundation costs about $6 to $12 per square foot for a single, poured concrete slab that rests on the ground.
  • A pier and beam foundation costs $8 to $15 per square foot and is made up of concrete or metal piers supported by beams. These foundations are common in areas with sandy or unstable soil.
  • A crawl space foundation costs $15 to $18 per square foot for the elevated foundation with enough space to crawl through. These foundations are common in warmer climates where the frost line is not deep or on sloping lots since they don't require as much excavation as other foundations.
  • A basement foundation is the most expensive at $35 to $50 per square foot. This foundation provides the most space and flexibility. A finished basement foundation can double the living space of a home.

Do you install septic before a foundation?

Yes, you generally install the septic system before pouring the foundation for a new home. The leach field and septic tank need to be located in a specific area of the property and this is easier to do before the foundation is in place. Installing septic first also allows you to have water available on-site during construction.

How much does it cost to fill in a crawl space?

Filling in a crawl space or crawl space encapsulation costs $3,000 to $8,000. Prices include basic cleaning, minor repairs, mold removal, and installing a vapor barrier, a sump pump, new insulation, and a dehumidifier. The total project cost depends on the condition and size of your crawl space, the type of insulation you choose, the thickness of the vapor barrier, and the pump and dehumidifier installed.

Crawl space encapsulation prevents excess moisture, mold growth, radon gas poisoning, and pest infestation. The process also helps alleviate allergens and pollutants to improve air quality. Another benefit of crawl space encapsulation is better insulation that can reduce energy bills by up to 20%.

How long does a poured concrete foundation last?

A poured concrete foundation can last for 80-100 years or more if it is properly constructed and well-maintained. However, a number of factors can affect the lifespan of a concrete foundation, including the quality of the concrete mix and the workmanship, the climate and soil conditions, and the amount of weight the foundation is supporting.

Some of the most common reasons a foundation fails include:

  • Poor drainage
  • Frost heave
  • Tree root invasion
  • Earthquakes and other seismic activity

How deep does a concrete foundation need to be?

Generally, a concrete foundation needs to be at least 12 inches deep to ensure the foundation is below the frost line and can support the weight of the structure. In some cases, a deeper foundation is required. If you are building in an area with a high frost line, poor soil quality, or building a very heavy structure, you may need to dig deeper.

A qualified structural engineer can help determine the appropriate depth for your concrete foundation.

What questions should I ask a foundation contractor?

Here are some questions you can ask a foundation contractor to ensure you are making the best choice for your project:

  • Is your company licensed, bonded, and insured for foundations?
  • How long have you been pouring foundations in my area?
  • What experience do you have installing my preferred foundation type?
  • What does your estimate include?
  • How long will the foundation take to install?
  • Do you have past clients I can contact or a current job site I can visit?
  • Do you offer a written estimate, contract, and timeline for the job?
  • What happens if the foundation is delayed due to weather or other unforeseen circumstances?

How do I choose a foundation contractor?

Selecting and pouring a foundation is one of the most important steps in building your new home. Choose the best foundation contractor by following these steps:

  • Get at least 3 estimates with the same foundation type to compare costs.
  • Confirm the contractor's experience with your preferred type of foundation.
  • Make sure the contractor is licensed, bonded, and insured, with 5 years of experience.
  • Look for foundation contractors with good reviews on HomeGuide and Google.
  • Ask for references from past clients and follow up to get their opinion on the work quality.
  • Confirm if the estimate includes labor, materials, and equipment costs.
  • Ask for a contract in writing that includes the costs, timeline, and warranty information.

Reviews for San Francisco foundation contractors

Recent success stories from people in the San Francisco area.
Shaun A.
JR and his team were friendly and professional. They got the job done and even came back to make sure it was completed and the site was clean and better it was when they left.
Moana concrete
Paul G.
Did my entire backyard. 2 stained cement patios, artificial grass, planters with drip irrigation, planted our plants and added bark (w/ weed protection) and decorative rock. Excellent value as compared with others. Have recommended him to 4 other homeowners in our development. They were also very happy.
AMK Concrete
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