Gary Horn, PE
President, Founder

Since 1979, Gary has been providing local city municipalities with a broad range of Civil Engineering and Land Surveying.

Brandon Broussard, PE
Principal Engineer

Brandon provides project guidance for residential, agricultural and military projects while overseeing the Traffic Design services provided by Y&H staff.

David Horn, PE, LS, CASp
Principal Engineer

David is a Licensed Land Surveyor and oversees all surveying services provided by office and field staff. As a Certified Access Specialist (CASp) David also serves local small business’ in guidance to increase accessibility and reducing risk of ADA lawsuits.

Philip Romero, PE, QSP/QSD
Principal Engineer

Philip serves many private developers looking to develop commercial or multi-family projects.

Josh Rogers, PE
Principal Engineer

Josh leverages his deep municipal experience as the City Engineer for our longest standing client, the City of Sanger.

Jerry Jones, PE
Principal Engineer

Jerry serves as the City Engineer for the cities of Kerman and Chowchilla. He also provides oversite for pump design, water system networks, and Federally Funded capital improvement projects.


Since our founding in 1979, our headquarters have been located within the City of Fresno. In 2006 we created our own 7,000 square foot building for our headquarters, and have been expanding ever since to fill it with new members of our team. Centrally located in California has allowed our team to serve a number of communities and clients throughout the Valley. Most of our projects have been between Bakersfield and Stockton. Over the years, our surveyors have been spotted as far south as Catalina Island, and as far north as Redding!

Fresno Headquarters


Yamabe & Horn Engineering was founded by Ronald Yamabe and Gary Horn in November 1979. Yamabe brought more than 10 years’ experience in municipal engineering and Horn more than five years’ experience in private sector engineering to their own company, a combination that proved itself integral to the continued success of the firm.

Although the principals wore overcoats in the office during their first winter in business to economize on the heating bill, 35 years after Yamabe and Horn opened for business the firm grew from a two-man office to a staff of 38 employees, including licensed civil engineers, licensed land surveyors, designers, GIS specialists, CAD operators, survey crew members and clerical staff.

In 2009, the company moved it’s office into a new 12,000SF corporate building located near Shields and Fowler. The location was designed specifically to provide a more efficient workplace for the staff.


Throughout the years, Yamabe and Horn has sought to maintain a client-centered approach to our business, focusing on delivering high quality work product with exceptional customer service standards. Everything we do is based around this concept, including the sizing of our company.

We believe our status as a “mid-sized” firm provides us with greater capabilities and available resources than smaller firms, but allows for greater principal involvement and oversight than might be available in larger firms.

Our principals develop the projects from the outset, selecting project managers and establishing the project parameters and controls. As the project continues, they maintain close involovement and client contact to ensure successful exectution and delivery of the project in a manner consistent with the expectations and desires of the client that were established at the project’s beginning.


Some of Our Clients