top of page
Modern Villa

QLC Engineering, LLC

About Us

QLC Engineering, LLC provides full-service engineering design services for Southern California projects ranging from brand new house, new ADU or guest house, multifamily, apartment building, commercial, and industrial projects.  It is managed and composed of licensed Civil Engineers in the State of California with more than 15 years of in-depth experience in Los Angeles County design standards and other areas in Southern California. If you are an architect, developer, contractor, or homeowner, we are here to assist you and to provide you with professional engineering design and surveying services. 



Aerial View of Suburban Street

Our Services

Civil Engineering Design

  • Site Grading Plan

  • Earthworks Calculations 

  • Removal & Recompaction Plan

  • Retaining Wall Design

  • Utility Design (Sewer, Water and Drainage)

  • Low Impact Development Plan (LID)

  • Stormwater BMP Design

  • Water Quality Management Plan (WQMP)

  • Hydrology and Hydraulics Study 

  • Erosion Control Plan or SWPPP

  • Road Design

  • Fire Access Design Plan

  • Street Improvement Plan (A or B Permit)

  • Curb Ramp Design


  • Topographic Survey

  • Boundary Survey

  • Subdivision Map

  • Tentative Parcel Map

  • Final Parcel Map

Structural Engineering Design

  • Single Family Home

  • Accessory Dwelling Unit (ADU)

  • House Addition or Remodelling

  • Multi-Family Units

  • Commercial Building

  • Industrial Building

  • Retaining Wall Plan

  • Shoring Plan

Wooden Terrace

Areas We Serve

Los Angeles County

Ventura County

Orange County

San Bernardino County

Riverside County

San Diego County


QLC designed the rain barrel system for our house. The original planters designed by a civil engineer at Santa Monica did not work. We don't have much time for the project. We found QLC and they designed rain barrel system in a very professional way and fast. They also communicated with our landscape contractor to make sure the rain barrel could be installed properly. I highly recommend QLC for civil engineer job. - Jinliang Li of Playa Del Rey, CA


QLC was recommended to me and they helped me right away with the design to my driveway. They have been very helpful from the moment I spoke with them and even after they finished my design. I highly recommend QLC. Thank you for all your help!

- Magda Azenon, Los Angeles, CA

bottom of page