The Leading Subsurface Damage Prevention Provider in los-angeles

The leading service provider in Utility Locating, Ground Penetrating Radar (GPR), 3D Laser Scanning, Video Pipe Sewer Inspection, Concrete Scanning, Leak Detection, & Industry Leading Maps and Models.

Let us intelligently visualize your built world.

GPRS brings job site safety nationwide. GPRS employees are SIM certified, and offer unparalleled services including Concrete Scanning, Utility Locating, Video Pipe Inspection, Leak Detection, Mapping and Modeling, and more.

  • And now, with the addition of 3D Laser Scanning, we can provide you with the industry’s only comprehensive, top-down facility visualization and contextual map, including every space and every material, from the roof through the subsurface utilities, infrastructure, and more, all cross-referenced and delivered in a single easy-to-use geospatial interface with our SiteMap service.

    Our comprehensive services include:

  • Utility Locating: 60% of all utility lines are private, not public. 811 locates only public utilities, and does not provide depths for those locates. Our utility locating services employ both GPR and EM technology to provide a necessary and accurate supplement to One Call locates to provide utility mapping, and clearances for soil boring and direction drilling.
  • Concrete Scanning: Every GPRS concrete scan is backed by our exclusive Green Box Guarantee. Our accuracy rate for post tension concrete imaging is 99.8%+, so when we provide you with a green “clear” space to saw, cut, core, or drill, you know that you can count on our data when planning your project. If we get it wrong, we will pay for the cost of the damage.
  • 3D Laser Scanning: Our elite Project Managers employ survey-grade 3D LiDAR scanners to gather data that is accurate to within millimeters, and do it in far less time than manual measuring. The 3D point cloud data provided by the scans can then be utilized to create precise drawings, maps, and models to detect and avoid costly clashes and change orders, to allow for seamless off-site prefabrication, and as-builts that streamline everything from the design to O&M phase of your project.
  • Video Pipe Inspection: If your project needs a CCTV video pipe inspection to check for water leaks or sewer defects, our specially trained and NASSCO certified VPI Project Managers utilize state of the art robotic crawlers and lateral launch push cameras to inspect your water infrastructure, and WinCan software to provide detailed reporting that includes each pipe defect found and its severity, screenshots of interior pipe conditions, and video files of the complete inspection for evaluation and reference. 
  • Leak Detection: GPRS Project Managers employ both acoustic leak detectors (highly sensitive microphones, headsets, and electronic devices) and leak noise correlators (which use an algorithm to detect leak sounds) to gather data in the field. That data can then be used to provide the precise location of any pressurized water line leak, so that you can locate without the need to pothole and can excavate only in the area to be repaired.
  • Maps & Models: From the complimentary .KMZ & PDF files we provide for every outdoor utility locate to millimeter-accurate, complex 2D CAD drawings and 3D BIM models, GPRS’ Mapping & Modeling Team can deliver. We provide complete utility mapping, concrete image mapping, Matterport scanning, 3D point clouds, mesh models, and complete 3D BIM models and walkthrough tours so that everyone on your project has the most accurate, real-time information, delivered in an easy-to-use format for the entire project life cycle.
  • Drone Imagery: Our drones are fitted with state-of-the art cameras to provide UAS Thermographic and Magnetic Imagery to find previously hidden subsurface voids, damaged solar panels, and abandoned oil well heads. We also provide arial site imagery and building façade imagery to provide top-down facility mapping and avoid costly and time-consuming scaffolding inspections.
  • SiteMap: We can also provide you with the industry’s only comprehensive, top-down, facility infrastructure visualization & contextual map, all cross-referenced and delivered in a single, secure, shareable, and easy-to-use geospatial interface via SiteMap.


Fill out the contact form, and a GPRS Project Coordinator will contact you to get the process started and your project well on its way to completion.


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    GPRS provides private utility locating, leak detection, 3D laser scanning, CCTV video pipe inspection, and concrete scanning throughout Los Angeles and the state of California. GPRS provides subsurface obstruction location and analysis to keep construction and excavation projects on time, on budget, and safe. Prevent subsurface damage and avoid striking gas communication, water, sewer, or electrical lines. Schedule a project with us today!

    By using expert video cameras for our sewer and pipe inspections, GPRS is able to locate all blockages that could be halting the waterflow in your pipeline system. VPI is only an addition to our core services which also include concrete scanning, utility locating, and facility mapping and modeling. However, no matter the service, each of our clients are guaranteed Project Managers who are NASSCO (National Association of Sewer Companies) certified and trained to assess, maintain, and rehabilitate underground infrastructure. This allows PMs to provide proper investigation techniques for our VPI applications which include: Sewer and water inspections, water and sewer mapping, lateral inspection and mapping, and cross-bore mitigation.

    Outline of U.S. Border

    Service Available

    Contact our team and our nearest project manager will contact you.

    Serving Los Angeles, L.A., Chula Vista, Irvine, Anaheim, 0.C., Southwest California, San Bernardino, Riverside, Palm Springs, Carlsbad, Escondido, San Diego, Bakersfield, Fresno and Temecula.
    We also work in the following California counties Los Angeles, Monterey, San Benito, Kings, Orange, Riverside, San Bernardino, Kern, Ventura, Tulare, San Diego, San Luis Obispo and Imperial County.