Pinnacle
Foundation Repair in San Marcos

Serving San Marcos and the surrounding areas

Schedule Your Free Evaluation

Radically fair quotes: We never charge for work that doesn't need to be done. Period. End of story.

Our comprehensive free foundation evaluations give you peace of mind knowing your structure is sitting on a firm foundation. If we do find any issues, you can trust we will only suggest repairs your foundation actually needs.

    Deep in the heart of South Texas, San Marcos stands proudly as the seventh-most populous city in the United States, with a rich and diverse cultural heritage. Offering iconic attractions like the River Walk and historic Alamo, which traces its roots to a Spanish mission established in 1718, San Marcos warmly invites visitors to experience a seamless mix of history and contemporary charm. However, beneath this vibrant city lies a geological challenge – the thick clay soil. Inherent to the Blackland Prairie region of Texas, clay possesses a high shrink-swell potential, signifying a risk of foundation problems.

    At Pinnacle Foundation Repair, we understand the unique challenges posed by the San Marcos soil and climate, and our specialized team is well-equipped to address them – providing tailored solutions to tackle issues such as soil settlement, slab cracks, and foundation shifts. From free evaluations to comprehensive foundation repair services, we’re committed to ensuring the structural integrity of homes and businesses in both San Marcos and its neighboring communities.

    Free evaluations for residential and commercial properties

    Radically honest, radically reliable.

    Yep, you read that right: free evaluations. As in no cost, no hassle, no worry. The friendly experts at Pinnacle Foundation Repair are ready to inspect your foundation and check it for signs of damage using the latest techniques like ground-penetrating radar. If repairs are needed, we diagnose any issues and put together a customized plan.

    But here’s the best part: Our evaluations reveal that 1 in 3 of our clients don’t need any repair services at all. In those cases, we offer strategies to keep your structure standing firm and show you how to check for signs of potential foundation damage in the future. How’s that for radical honesty?

    Types of damage to be on alert for in San Marcos , TX

    Foundations can show signs of damage long before serious structural issues arise, but you have to know what to look for and what to do when you suspect a problem. Get ahead of the situation and prevent collateral issues by checking for these signs:

    Exterior Brick Cracks in San Antonio Texas

    Exterior Brick Cracks

    If you have a brick home and notice either horizontal or vertical cracks on the exterior of your home, this is a strong signal that your home is experiencing foundation issues and needs to be inspected by a professional.

    Cracks on Interior Walls ​in San Antonio Texas

    Cracks on Interior Walls

    Take a close look at areas like seams or breaks in the wall and other vulnerable areas inside your house. These are usually among the first places to show signs that foundation issues are a concern. Inspect drywall around doorways, windows, and thresholds for cracks and misalignment.

    Doors and Windows Sticking ​in San Antonio Texas

    Doors and Windows Sticking

    Doors and entryways will begin to sag when there’s damage to your property’s foundation. Doors often stick or potentially swing freely due to the misalignment, and windows may become hard to open and close. Check for these signs and call a professional right away.

    Cracking and Buckling Floors in San Antonio Texas

    Cracking or Buckling Floors

    Flooring issues can be a tell-tale sign that you have foundation issues. If you notice tiles are uneven or cracked, the hardwood is sagging, or if you notice cracks on your exterior slab foundation, you need to have your foundation inspected.

    Frieze Board Separation in San Antonio Texas

    Frieze Board Separation

    Frieze board separation occurs when the horizontal trim board (frieze board) visibly detaches from the exterior wall of your house. This noticeable gap is a vital indicator of potential foundation problems, signaling shifts or settlements that may jeopardize the overall structural integrity of the building.

    Pinnacle’s proven foundation repair methods

    We are experts at a wide variety of foundation repair methods. This allows us to use the best method for your specific project.

    Lifetime Warranty

    Steel Pier

    In this popular method, we interlock 12-inch steel pipes with a friction reduction plate and fill the pipes with cement to prevent the piers from failing. Steel piers can reach up to 75 feet into the ground - five times deeper than concrete cylinders. And because they can bear a higher load than any other foundation repair method, they’re a permanent solution.


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    Lifetime Warranty

    Steel
    transition pier

    Struggling to choose between a steel and a concrete pier system? Get the best of both worlds. Steel transition piers mix double-walled steel and high-strength concrete to provide a strong, stable foundation at a reasonable cost. Compared to a concrete pressed piling or a drilled pier, it reaches deeper into the ground for greater stability.


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    10-Year Warranty

    Drilled pier

    Drilled piers are screwed into the earth instead of pressed, which causes less strain to the building. These lightweight and durable piers are an ideal choice for smaller buildings that are unable to endure the vibrations caused by a larger hydraulic press. We reinforce these 12-to-18-inch piers with rebar and a five-sack concrete mix.
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    5-Year Warranty

    Mud jacking

    Got sunken or uneven concrete slabs on your porch or home’s foundation? Our Mud Jacking process solves this by injecting a mixture of water, soil, sand, and cement beneath the surface to restore the slab’s proper elevation.

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    What our San Marcos clients say:

    Matt McGee
    3 days ago
    Brian came to measure our house. He did not waist our time with cheesy sales tactics. He explained what was happening in a way anyone could understand, he was polite and efficient. Looking forward to working with the company.
    Tyler Brockman
    4 days ago
    Very knowledgeable and honest place. Jason is very informative and the whole team is very responsive to questions along the way. It’s never exciting to have foundation issues but these guys are very supportive! A+business!
    wreck'em tech
    5 days ago
    Excellent customer service from start to finish! Heather was professional, knowledgeable, and took the time to answer all my questions. I truly appreciated their honesty and professionalism. Highly recommend!
    Mike Watson
    5 days ago
    Ross came out and discussed all options for my home’s foundation. He is very knowledgeable and straightforward. It’s refreshing that people like Ross are still out there helping us. ** Ross, Thank you for your time and help on this.
    Matt Nason
    1 week ago
    Jesse was awesome. I had some important questions about my foundation repair and he responded and was at my house to answer them ASAP. I really appreciate the great service and how knowledgeable he was. Thank you.
    Angel Jones
    2 weeks ago
    The Pinnacle team and supervisor, Vito did a Great job. Very respectful, always did what they said they would do, followed up on everything, and kept a clean worksite. The finished job was perfect.
    IMELDA Garcia
    2 weeks ago
    Brian was very thorough, and explained everything made it easy to understand!
    joseph garza
    2 weeks ago
    Thanks, Roy, for taking the time to educate me on what foundation repair involves and what the process can look like. I really appreciate your time, knowledge, and willingness to explain everything!
    Jeyson did an amazing job. He and his crew were respectful, polite, and cleaned up after they were done. I will recommend to anyone asking if I know anyone who does foundation work
    Response from the owner:Derrick, love hearing this! Jeyson and his crew are rock stars, and we’re lucky to have them. Thanks for trusting Pinnacle with your home and especially for taking the time to brag on our guys. We love seeing reviews like this.
    TK
    3 weeks ago
    Ross from Pinnacle Foundation Repair was awesome. He evaluated the house to see if we had any problems and then thoroughly went over it with us so we understood everything. Even though we didn’t need any repair this time, the measurements will be kept so that we have any shifting Pinnacle will know about it from their baseline and can help us out. Ross gave us real peace of mind with his explanation and expertise. Thanks, Ross and Pinnacle Foundation Repair!
    Response from the owner:TK, this is music to our ears. The best foundation repair is sometimes no repair at all! Ross does an awesome job making sure homeowners understanding what’s happening with their homes. We are glad he’s on our team. Thanks for trusting Pinnacle, and hopefully those measurements never change!
    Jesika Allen
    3 weeks ago
    Great service, very efficient and helpful 👏
    Response from the owner:Thanks for trusting Pinnacle and the great review!
    Dafne Torres
    3 weeks ago
    Great experience and service! Ross was super friendly, attentive, and detail-oriented. It was a pleasure meeting him and I definitely would recommend their services to anyone ~ their prices are reasonable and the quote was super detailed, which i appreciate immensely!!
    Response from the owner:Dafne, you’re making Ross look like a superstar over here! 😂 Seriously though, Ross takes a lot of pride in educating homeowners and helping them understand what’s happening with no surprises. Thank you for trusting Pinnacle and recommending us to others. It means a lot.
    Zachariah Pate
    3 weeks ago
    Great work and did amazing. 100% would hire them again.
    Response from the owner:Thanks, Zachariah! Hopefully you won’t need us again, but we’ve got your back if you do!
    Michael Khan
    3 weeks ago
    Response from the owner:Short, sweet, straight to the stars! ⭐️ Thanks!
    Mark Bitter
    4 weeks ago
    Response from the owner:Five stars, zero complaints. Our kind of math. Thanks, Mark!
    Hudson Adams
    4 weeks ago
    Ross from Pinnacle is the best,!
    Response from the owner:Thanks for the love and the five stars! We’ll make sure he hears about it.
    Michelle Allen
    4 weeks ago
    I have multiple people in my neighborhood and on my street getting foundation repair done. Ross from Pinnacle came by and let me know I’m not at risk currently, but gave me some maintenance items and suggestions to prevent issues in the future!
    Response from the owner:Glad Ross could give you some peace of mind and helpful tips. Thanks for the five stars!✨
    Vicki Allen
    4 weeks ago
    Ross was awesome! We knew nothing about the process and we were overwhelmed but Ross helped us make sense of things! Trust Pinnacle!
    Lester Allen
    4 weeks ago
    Ross was great! We got three quotes and he took the most time to help us understand what was happening and why we needed the repair!
    sarah gonzales
    4 weeks ago
    Roy, thank you for answering all of my foundation question you were very helpful!
    Response from the owner:Sarah, Roy loves talking foundations, so you probably made his day! I bet he gave you five stars as well! Thanks for the kind words, we will pass them along.
    Stephanie Adams
    4 weeks ago
    Ross was professional and courteous. He was honest and transparent. At the end of the inspection, he put us at ease letting us know our house didn’t need work. Trust the integrity of this company!
    Response from the owner:Stephanie, we love giving homeowners great news! Ross knows that peace of mind is worth more than a sale. Thanks for recognizing what we’re all about at Pinnacle! 🙌
    Donna Bratcher
    4 weeks ago
    Brianna was great. He explained everything to us and answered all our questions.
    Response from the owner:Donna, we’ll let Brian know he did a great job! Although we may have to start calling him Brianna now! 😂 Thanks for the 5 stars!
    Joseph Rodriguez
    4 weeks ago
    Jason Cunningham was great to work with! He was professional, knowledgeable, and made the whole process smooth and stress-free. Highly recommend Jason and Pinnacle Foundation!
    Response from the owner:Joseph, it was a pleasure working with you. Appreciate your trust in Pinnacle!
    Brody Parker
    4 weeks ago
    Jason Cunningham was excellent in guiding me through the whole process. I highly recommend Pinnacle Foundation for any future needs!
    gates whiteley
    1 month ago
    Jesse Pena from Pinnacle came out today, Oct 7, 2026, to assess a problem that arose after we replaced our cedar posts with concrete posts. Jesse spent more than an hour under our house developing a plan to address our shifting soil problems. Pinnacle's warranty (one of the best in the business) will cover all the work. Jesse also showed me some simple maintenance solutions I can implement to prevent future problems. We are very pleased and grateful for Jesse and the folks at Pinnacle. Gates Whiteley

    Pinnacle Foundation Repair in San Marcos

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    Contact

    Hours of operation

    Mon – Fri     8 am–10 pm
    Sat – Sun    9 am–10 pm

    Our San Marcos office serves the following areas

    FAQs about Foundation Repair in San Marcos , TX

    San Marcos soil is mainly clay, known for soaking up water like a sponge. When it rains hard, it swells, and when it dries, it shrinks. This can spell trouble for foundations, as uneven water accumulation may occur around the base, exerting pressure that can push certain areas of the foundation upwards and lead to damage.

    In most cases, the repairs will not require you to be out of the home during the process, but there are some scenarios where some rooms would have to be cleared out to cut through the slab to install piers. However, Pinnacle offers tunneling services as an option to avoid this disruption.

    The cost for foundation repairs will vary depending on the issue, but an average quality repair made by a reputable company is going to average just over $11,000 based on the thousands of repairs we have made over the past 12 months. This average cost also includes having a reputable 3rd party engineer inspecting our work, a city permit, and also a hydrostatic plumbing test by a 3rd party plumber.

    Our steel pier system is the best method used in most structures in San Marcos and surrounding areas. Not only does it penetrate even the most dense clay in Texas, providing the most permanent solution, it’s also stronger than similar steel options on the market that many national foundation repair companies offer at a higher price.

    As long as the structure is lifted correctly by a properly trained technician following the proper IRC guidelines, repairing an affected area will not cause other areas of the foundation to settle. There are some foundation repair companies that outsource their repairs to inexperienced subcontractors that have created this stigma, but we do not operate this way at Pinnacle Foundation Repair.

    It’s best to take action as soon as you see signs of failure, no matter what time of year it is. With our extreme Texas weather conditions and problematic soils in San Marcos, it’s not advised to wait to repair your foundation. As time passes, the foundation failure can worsen and have a negative impact on a greater portion of the foundation, resulting in a larger scope of repair work. While cracks in the flooring and sheetrock are obvious signs of failure, watch for less obvious signs, like doors swinging on their own, trim separation, and sloping in the floors.