"It has been our pleasure working with Castillo Engineering. We have worked with them extensively and have always been impressed by their professionalism and promptness. I have personally felt that we were always taken care of and have learned that attention to details is at the top of their company’s philosophy. I have worked with many different Engineering firms in the last 17yrs and I feel that Castillo Engineering really does provide a full level of service and experience behind each project they are involved with. We are happy to recommend Castillo Engineer since they have proven to be trustworthy and thorough."

Diego PironaPrincipal, Pirona Design Group

"We at Shlemmer+Algaze+Associates use the services provided by Castillo Engineering for many great reasons. Their pricing is very competitive, their turn around fits with our project schedules and their quality of work is superb. They are very thorough in implementing everything necessary for construction and city review. They are real team players that bring a great deal of value to our projects."

Jose RuelasShlemmer Algaze Associates

"We have been very happy with the assistance and support we have received from Castillo Engineering. Their team answer us quickly and efficiently. They are professional and responsive to our needs and our clients and always accommodate us within a budget and in a reasonable time frame."

Erin WeissCherson Weiss Architects

"I have used Castillo Engineering for the past nine years on all my residential and commercial projects. Their on-time delivery of structural drawings and calculations has greatly benefited the service I provide to my clients. Their quick responses to any and all of my inquiries have kept my projects consistently moving forward."

Ernie YbarraYbarra- Building Design Studio

"Castillo Engineering has been a very good extension of our custom residential architectural firm for many years. Coordinating with them during the early stages of design has proven to yield a successful and cohesive project through construction. The Castillo team has always been very responsive to our requests and provide very creative, cost effective designs. I highly recommend them to anyone in need of structural engineering services."

Jeff JeannetteOwner / Architect of Jeannette Architects

"Margarito Castillo is my engineer of choice these days. He takes the time to explain his rationale in analyzing my houses. I'm impressed that he's a “structural engineer”, which designates a higher accreditation than more common "civil engineer". Many engineers over-design so they don't have to calculate carefully, this ends up costing my clients money. Margarito is precise in his engineering so that unnecessary construct costs are not incurred. Margarito delivers his calculations in time promised, and he's prompt in responding to city plan checkers & to field decisions. His fee structure is reasonable, and his staff is attentive and personable."

Alan SakimotoArchitect, 18 March 2010

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