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35 Years
experience
Trusted Concrete Contractors in San Antonio | JG Williams Construction
We are a family and minority-owned business that has proudly served San Antonio and surrounding areas for over 30 years. Our expertise spans commercial, general, and residential concrete projects, with a commitment to customer satisfaction on every job. We are licensed, bonded, and insured, offering custom design solutions and fair pricing tailored to client budgets. With decades of combined experience, we deliver complex projects efficiently while fostering long-term relationships through integrity and attention to detail. Our team prioritizes safety and excellence, having completed award-winning work recognized by Porch.com and Houzz.

We specialize in extending driveways, building patios, room additions, and large-scale commercial developments. Our approach combines technical knowledge with personalized service to exceed expectations, whether handling small repairs or major infrastructure projects. Client testimonials highlight our reliability, efficiency, and rare integrity in meeting deadlines and specifications. We remain dedicated to innovation and community, ensuring every project reflects our core values of quality and customer-centric service.
Services
Commercial Concrete Residential Concrete Concrete Driveways Stamped Concrete Colored Concrete Room Additions Excavation Concrete Sidewalks Concrete Patios Site Preparation
Details
  • Year established: 1991
Highlights and features
  • We have over 30 years of concrete contracting experience in South Central Texas.
  • Our family-owned business prioritizes personalized service and customer satisfaction.
  • We offer fair pricing with low overhead and expertise in complex projects.
  • We serve both residential and commercial clients with tailored solutions.
  • Our team is licensed, bonded, and insured for all concrete projects.
What people say
Outstanding job Amazing efficiency Rare integrity Excellent service Good people
Services
Commercial Concrete
We deliver large-scale commercial concrete solutions for national and local contractors. Our expertise includes communications tower pads, concrete bunkers, and site preparation. Projects are completed on time and within budget, ensuring structural integrity and compliance with industry standards.
Residential Concrete
We design and build driveways, patios, sidewalks, and room additions for homeowners. Our services enhance property value with durable, aesthetically pleasing solutions. Custom designs adapt to client needs, from extending small builder-provided spaces to creating new outdoor living areas.
Stamped Concrete
Our stamped concrete mimics natural stone or brick at a lower cost. This service offers durable, low-maintenance surfaces for patios, walkways, and driveways. Custom patterns and textures provide unique visual appeal while maintaining concrete's strength.
Concrete Excavation
We handle excavation for foundations, drainage, and landscaping projects. Our team ensures precise dirt work and sub-base preparation to support long-lasting concrete installations. Services include lot clearing, stabilization, and shoring for residential and commercial sites.
Concrete Repairs
We repair damaged driveways, sidewalks, and patios with seamless concrete solutions. Our process includes coring, trenching, and filling to address structural issues. Repairs restore functionality and aesthetics while extending the lifespan of existing concrete surfaces.
People
Guillermo Gujardo
Owner / Founder
Guillermo has 40+ years in concrete construction, founding J.G. Williams in 1991. He focuses on excellence and customer satisfaction, leveraging his expertise in estimating and project execution to ensure quality outcomes.
William Guajardo
Operations Lead
William leads operations with expertise in construction management and business development. He holds a BBA in Computer and Information Systems Security from the University of Texas at San Antonio, guiding teams through complex projects.
Questions
What types of concrete services do you offer?
We provide commercial, residential, and general concrete services including driveways, patios, room additions, stamped concrete, excavation, and repairs across South Central Texas.
Are you licensed and insured?
Yes, we are a licensed, bonded, and insured concrete contracting company serving San Antonio and surrounding areas for over 30 years.
How do you handle project pricing?
We offer fair pricing with low overhead, customizing bids to meet client budgets while maintaining quality and expertise in every project.
What areas do you serve?
We serve San Antonio and surrounding communities in South Central Texas, including Boerne, New Braunfels, Austin, and Blanco.
Can you handle both small and large projects?
Yes, no job is too small or large. We tackle everything from minor repairs to major commercial developments with equal dedication and expertise.
Reviews (7)
Jen Calvin
Aug 28, 2021 Report
Positive:Professionalism,Punctuality,Quality,Value
I had my porch sidewalk replaced after a botched previous job. They completed the job in a timely manner, the price was reasonable, and they did a wonderful job. I am very pleased with the results. I highly recommend them!
Service:Sidewalks
Joshua Wilson
Jun 19, 2020 Report
William (president of the company) came out to give me an estimate and within 24 hours I had it in my email! The estimate was detailed and provided all the work they would be doing. I had some other companies come out and they seemed to not be interested in my project and gave unreasonable estimates verbally without it being in writing, but J.G. Williams did not do that. On the day they said they would be coming out, they showed up bright and early poured my driveway extension in 1 day and it looks fantastic. They did a great job with post-work cleanup and left my yard cleaner then when they arrived
Martha R.
Oct 12, 2019 Report
JG Williams far exceeded our expectations! We knew we wanted some sort of sidewalk to wrap around the side of the house and a patio extension but didnt have the vision of what could work for us. William came out, gave us a free estimate and came up with a design. Once the forms were placed I wanted to make minor adjustments and there was no hesitation from his guys to accommodate my requests. We get so many compliments on our patio and our son loves riding his plasma car and other kid toys on the patio and down the sidewalk. Its been a great investment and we wouldnt hesitate to recommend
Rb
Jul 13, 2019 Report
We had the best and most professional experience with this company. I contacted J.G. Williams on a recommendation from my neighbor. They had their driveway done and it looked amazing!!! I called and got a response right away. I booked an appointment and got a very fair quote for my driveway. They started the very next day and it was done fast and clean. My neighbor on my other side was very impressed and he too got his driveway done. We are all very happy customers!!! I highly recommend this company and their employees. Thank you
Travis Wright
Aug 25, 2018 Report
We needed a large pad area poured with a trench drain for our dog kennels. Guillermo came the same day we called and drafted a full estimate within 24 hours. On the scheduled day of construction he and his crew arrived first thing that morning on time. They were able to complete demolition of the existing kennels, grading of the ground, installation of the drainage system and pouring of the concrete in only 3 days! He and his crew are truly professional and do their work for a fair price! We will certainly be using him for any future projects we have.
Tiger Woods
Aug 01, 2018 Report
It was truly amazing the way it all came together. I designed a concrete patio composed of rectangles of different shapes. Digging the pit and bringing in the base gravel was easy. Aligning all the rectangles, leveling them, sloping them and filling them with concrete was something I had to admit was beyond my skill level. When I called William, he said he'd be able to come to my home that very day.

He arrived on time, surveyed the area, reviewed my design and we discussed how the project would proceed. He sent over his proposal the next morning and less then 24 hours after that, William and his
Camille Pancratz
Nov 12, 2017 Report
When I was beginning the search for a major concrete addition to our community pool area J.G. Williams Construction's name was referred by a decorative concrete vendor AND another community. We hired them and they did superior work. We ended up hiring J.G. William Construction for 2 additional phases of concrete additions, plus additional sidewalks in our community. At my personal home we were having a drainage issue causing our driveway to become unstable. I consulted with William and he had a great solution and fix to the problem. We even did some concrete addition to the driveway. I HIGHLY recommend