Street Improvements
 Sewer Design
 Storm Drain Design
 R/W Acquisitions
 Design Surveys
 Construction Surveying
 Topographic Mapping
 Due Diligence
 Water Quality Management
 Storm Water Analysis

Thienes Engineering:

Since 1986, Thienes Engineering, Inc. has provided cost effective engineering services to the highest professional standards in a timely manner.  Responding to our clients needs as well as maintaining a good working relationship with local and state agencies has given Thienes Engineering an excellent reputation in the field of Civil Engineering and Land Surveying. 

Established in 1976 as Jay Thienes and Associates by his father, Brian Thienes expanded the business in 1986 to include Thienes Engineering, Inc.

Our main office in La Mirada, Ca., employs approximately 60 people and our satellite office in Murrieta, Ca., employs 10.

Principal Business:

Civil Engineering:
Industrial Developments - Commercial Developments - Shopping Centers – Residential Developments - Subdivisions - School Developments.

Land Surveying:
Boundary Surveys - Construction Surveying - Topographic and Alignment Surveying - ALTA Surveying - Horizontal and Vertical Control Surveying - Route Surveying


Thienes Engineering, Inc. utilizes CADD software and Civil Engineering programs for all its engineering and surveying operations. Currently Thienes Engineering utilizes all versions of Auto Cad from Civil3D, Autodesk LandDesktop, AutoCad 2008 to Version 14 with CivilSoft  on Microsoft based systems. All surveying work is performed with TDS Ranger data collectors and Leica TCR703 Total stations with dual axis compensators which achieve accurate and reliable surveys with a minimal chance of errors. We also use Trimble GPS 5700 on projects requiring GPS, enabling real-time differential GIS grade surveys and navigation.

14349 Firestone Blvd., La Mirada, Ca 90638   Ph. 714.521.4811   Fax: 714.521.4173   Email:
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