Pro Listing

Groundworks

Concrete & Masonry Contractors in Ontario, California
Ranked #1 in Ontario | Grade A
5.00 (201 reviews)

Groundworks

Groundworks’ Ontario, California branch provides local homeowners with concrete and foundation-related services supported by documented inspections and steady communication.

Why Homeowners Choose This Business

Homeowners mention on-time arrivals, detailed inspections, and steady communication throughout the job. Work plans are explained in plain terms and progress updates are shared as the project moves forward Local experience that helps homeowners across Ontario, California compare a more region-aware provider.

Service Area

Ontario, California and surrounding Inland Empire communities; call to confirm service to your address.

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  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Holds a strong position among local competitors.
  • Performs at or above the local average for Google rating.
  • Has more Google review volume than many local competitors.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Association Or Organization
  Establishment
  Point Of Interest
  Renovation Services
  Foundation repair
  Maintenance
  Concrete Repair
  Concrete Leveling
  Installations
  Footing Repair
  Repairs
  Crawl Space Support
  Slab Settlement
  Structural Assessment
  Masonry repair
  Crack Repair
  Concrete Lifting
  House Leveling
  Pier Installation

Typical projects for this trade include concrete repair, foundation evaluation and adjustments, crawl space and footing work, and related masonry tasks. Availability and scope can vary by branch.


Reviews

Recent Reviews

5.00

(Based on 201 reviews)

Recent reviews highlight punctual arrivals, clear explanations during inspections, and steady communication before and during projects. Homeowners often mention respectful, professional crews and tidy work areas. Several reviews describe visible improvements after foundation or footing work and appreciation for photo or video updates. Pricing and scope are generally seen as well explained.

Google Review
Jeff Holguin on Groundworks

Groundworks is great and extremely helpful! The team of Oscar and Armando did a fantastic job. They arrived on time, were very professional, and the work they completed around our pool is amazing. Oscar kept us informed and communicated ahead of time with their arrival schedule for the day of the project. We truly appreciate their hard work, attention to detail, and excellent customer service. Highly recommend Groundworks and their team!

Google Review
Melanie Vliet on Groundworks

These people are very professional and thorough and pleasant to have around. Both Rob, who did the inspection and gave me the estimate, and the crew of Juan, Eric, and Derek arrived right on time or even a little early. They explained everything to me clearly and thoroughly. They let me know when they expected to finish and provided photos and video of what they found under my house and the work that they did there

They completed the work in only two days rather than they expected three days. They cleaned up after themselves to perfection. They took an interest in my house and in me. They even left some materials that they thought I might need in the future if I had further work done by other people

I can’t think of anything that they could have done to improve my experience.

Google Review
Danielle LaCoste on Groundworks

Groundworks came out with foreman Roger and Santos to fix two footers under the house that were failing. The whole process from when the inspector came out to provide an estimate to work being completed was stress free. The foreman communicated well and they did a great job making the footers look nice. Definitely will use them again. I wish i had heard about them sooner (initially contracted with ram jack pacific- waited over a month to get a start job date. Finally cancelled with ram jack after getting the runaround once again and groundworks was able to come out and schedule the job the following week).

Shane was also very knowledgable on the foundation topic. I know enough about foundations and it was clear he knew a lot about the topic and he wasn’t just there to land a sale. The entire crew just seemed to care, and i appreciated that. Competent and kind. What else can you ask for with a contractor?

Thanks for making this project so easy Shane, Roger and Santos!

Google Review
Ken Lau on Groundworks

I had an excellent experience working with Mike, the CFI, and Oscar, the Foreman, from Groundworks. From start to finish, they were professional, knowledgeable, and incredibly thorough.

Mike took the time to carefully inspect everything and clearly explain the issues and recommended solutions. He was honest, patient, and made sure I fully understood the process without feeling pressured. His expertise and attention to detail gave me complete confidence in the project.

Oscar and his crew were just as impressive. He managed the job efficiently, kept everything organized, and maintained clear communication throughout. The team worked hard, kept the area clean, and completed the work on schedule. Oscar made sure everything was done right and didn’t cut corners.

If you’re looking for a trustworthy team that delivers quality work and outstanding customer service, I highly recommend Mike and Oscar at Groundworks. Five stars all the way!

Google Review
Eric Nelson on Groundworks

Groundworks exceeded my expectations on the amount of lift they were able to achieve on my single family home and also their level of customer service.

One part of my home had an approximate 5” elevation difference from level. You could definitely feel and see a significant sloping when you walked into the house. Groundworks Foreman (Manuel Conejo) told me at project start he would strive for max lift, but also advised me that 5” might not be possible with structure damage, etc. i appreciated his honesty and communication! In the end… we got 4” of lift! I was and am so incredibly happy. Now when you enter the house, there is no apparent sloping or elevation change. It’s like a normal level house!

All throughout the two week process that was longer than normal due to heavy rains, Manuel kept me abreast of project status via texts and phone calls. The communication was great!

Manuel Conejo, Edgar Gonzalez and Roberto Brito Santana are a great team and did an amazing job installing 19 push piers around my home and then injecting foam to fill voids.

I highly recommend GW and this specific team. This was a best in class experience for me. I did my due diligence talking to four different companies and am super happy that I chose Groundworks. They were definitely the right choice.

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Frequently Asked Questions

This location focuses on concrete and foundation-related projects such as foundation repairs, footing work, and associated concrete tasks. Specific services can vary by branch, so it’s best to call and confirm availability for your project.

A representative visits the property, evaluates conditions, and explains findings and options. Many customers report receiving clear explanations, timelines, and supporting photos or videos to understand the proposed work.

Timeframes depend on the scope, access, and site conditions. Smaller repairs may be completed within a day or two, while more involved work can take longer; your inspector will outline a schedule.

Ensure access points are clear and remove fragile items from work areas. The team typically coordinates timing in advance and will communicate any special preparations needed.

Many reviewers mention receiving photos or videos of conditions and completed work. Ask your representative to include progress updates in your project plan.
 Verified Listing

Opening Hours


  • Monday 4:00 AM – 8:00 PM
  • Tuesday 4:00 AM – 8:00 PM
  • Wednesday 4:00 AM – 8:00 PM
  • Thursday 4:00 AM – 8:00 PM
  • Friday 4:00 AM – 8:00 PM
  • Saturday 5:00 AM – 8:00 PM
  • Sunday 7:00 AM – 8:00 PM

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Business Details


Business Rating
5.00 (201 reviews) Pro Listing
Address
1850 S Parco Ave, Ontario, CA 91761
Business Type
general_contractor

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