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About Us

What We Do

Turpin & Rattan Engineering, Inc. is a full service Mechanical, Electrical, Plumbing and Technology (MEPT) consulting engineering firm providing design services for small to large size built environments including new construction, renovations, tenant improvements, and modernization for various types of buildings and facilities.

Sustainable services feature Leadership in Energy and Environmental Design (LEED®), Collaborative for High Performance Schools (CHPS), SDG&E Savings by Design, and Photovoltaic integration along with all client based sustainable objectives.

Beyond being well versed in the traditional AutoCAD software, Turpin & Rattan Engineering, Inc. offers design with the latest version of Revit MEP Building Information Modeling (BIM) software.



San Elijo Visitors Lagoon - Santee, California: LEED® Platinum Certified

SDG&E Energy Innovation Center - San Diego, California: LEED® Double Platinum Certified


Prima Deshecha Green Building - San Juan Capistrano, California: LEED® Gold Certified

Pacific Ridge High School - Carlsbad, California: LEED® Gold Certified


Hoover High School Woodshop - San Diego, California: LEED® Silver Certified

Coronado Tennis Club – Coronado, California: LEED® Silver Certified

Goodan Ranch Fire Recovery Project - Santee, California: LEED® Silver Certified

Market Creek Plaza Retail Center - San Diego, California: LEED-ND® for Neighborhood Development Silver Certified

Southern California Edison Valley Substation Maintenance Building – Menifee, California: LEED® Silver Certified

Southern California Edison Administration Building - Tehachapi, California: LEED® Silver Certified


Southern California Edison Garage Building - Tehachapi, California: LEED® Certified


Ellen Browning Scripps Elementary School Energy Efficient Air Conditioning System: Special Achievement in Energy Education - Awarded by San Diego Excellence in Energy (SANDEE)

Joe & Vi Jacobs Community Center: Project of the Year - Awarded by American Society of Civil Engineers (ASCE)

City of La Mesa Post Office / Library: Project of the Year - Awarded by American Society of Civil Engineers (ASCE)

Linda Vista Library: AIA Award of Merit

William C. Herrick Community Medical Library: AIA Orchid Award

Goodan Ranch Fire Recovery Project: Sustainable Communities Champion San Diego Gas & Electric

Goodan Ranch Fire Recovery Project: Achievement Award for Facility Design and Planning California Parks & Recreation Society (CPRS)

East / West Olympic Parkway Pedestrian Bridge: Outstanding Project - Awarded by American Society of Civil Engineers (ASCE)

Malcolm X Library & Performing Arts Center: Design Award of Honor Society of American Regional Architects

International Illumination Design Award of Merit Illumination Engineering Society of North America: Turpin & Rattan Engineering, Inc. Office Building

Nokia Phase II Office Building: AIA Orchid Award

San Diego Gas & Electric - Savings By Design: The Majority of Turpin & Rattan Engineering, Inc. Qualify for this Design Efficiency Award

Collaborative for High Performance Schools - CHPS: The Majority of Educational Facilities Designed by Turpin & Rattan Engineering, Inc. Qualify for this Design Efficiency Award

Award for Electrical Excellence – Various Telecommunications Facilities – 1992, 1997, 2013: Awarded by the Los Angeles Chapter of the National Electrical Contractors Association (NECA)


Turpin & Rattan Engineering Inc. organized into its present structure in 1970. Together with its predecessor firm, Turpin & Rattan Engineering, Inc. has completed thousands of projects since 1945 and sustains a diverse list of clientele.

History helps us make more reasonable assumptions about the future. We are proud to be among the most experienced and respected engineering firms in Southern California.



Providing Client Satisfaction Through Innovative Engineering Solutions Coupled with Teamwork, Integrity, Quality and Vision.


A detail-oriented approach to problem solving and comprehensive review throughout the design and construction process makes certain our projects meet design goals and maximize building performance.


Being accessible and responsive to client needs is a primary goal. We believe teamwork and effective communication are essential to coordinating action, recognizing and solving problems, and responding to changes.


We strive to quickly adapt new technologies that can improve design quality, increase efficiency and save our client's money.


Our staff is comprised of forward thinking individuals with years of experience and proven industry expertise.