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Our experience and expertise gives us the means and methods to manage the process of correction and update of previous survey documents to provide accurate recordation documents on every project. We are experts in the integration of field survey and record data with digital aerial mapping and orthophotography.  

Our design services include

  • Topographic surveys

  • Legal descriptions and exhibits

  • As-built maps, record maps and corner records

  • Aerial Topography

  • Right of Way Mapping

  • Lidar Scanning

  • Mobile Scanning



We are currently working on and have worked on a variety of major transportation projects such as the
OC 405 (Orange County), Midcoast Transportation Corridor (San Diego),
91 Freeway Improvements(Corona),
I15-I215 Interchange Improvements (Devore), Caltrans On-Call (Riverside and San Bernardino County),
I10 and Alabama Street Improvement Project.



We own a Trimble IMS GEDO Single Trolley System. This system works with Mark IV Jupiter systems, to precisely and expeditiously lay more track than past conventional track layout methods. The Trimble GEDO IMS System can be used for precise track As- Builts, LIDAR Mobile Scanning along the tracks, Topographic Mapping, Geometry Reports, Clearance Analysis and Height/Stagger reports of overhead catenary systems.

Lam Le Dan Calvillo


CL Surveying & Mapping (CL Survey) is a local, SBE/DBE/MBE professional land survey firm that focuses exclusively on public works projects for design engineering firms, general contractors and municipalities. Our owners, Lam Le and Dan Calvillo, are licensed professional land surveyors, have over 45 years of combined experience in the survey industry, and are involved in every project. 

CL Survey is certified through the CUCP as a DBE Land Surveying Firm (DBE 38284) and can assist in meeting DBE project goals.

We work with the best in California...

We will make your projects our #1 priority, regardless of size or location.
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