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    Services - RetroCal

    Deck construction

    Structural engineering project consultation

    Structural inspection

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    Structural Engineering & Construction - Two-story ADUs... Architectural design concept that we will provide structural engineering services.

    Structural Engineering & Construction

    (39 reviews)

    Fairfax

    I found Sam through Yelp. At first, we were both not sure whether we will work together because he…read morelives more than 20 miles away from where I live, and I'm the type of person who is always skeptical about what I read on the internet. But now I'm very happy that Sam decided to take on the job and develop the structural calculations and drawings for removing a load bearing and shear wall at my Condo. The Project started in September 2025 with initial submittal of permit application package to the City. It went into construction about four (4) weeks ago and was successfully completed today (5/8). During the process, we developed trust for each other. I contacted Sam numerous times for questions, problems and consultations and he was always responsive. He and my architect friend worked together to develop the initial design but had to modify it to overcome a major obstacle that came up during the construction. He came over for construction observations and gave instructions to the contractor how to strap the beams together for maintaining structural integrity of loading and shearing. His fees were much lower than another builder whom I also got a bid from, and his approach to things was much simpler and yet conservative to that from the other firm. I told Sam, whether it is good or bad, I don't usually do reviews for others. But for him, I will do one. I'm thankful to have a great team of Sam (the engineer), my architect friend, and excellent construction crew to help me complete this project.

    Sam is awesome. I had significant concerns about the house I had just bought because the floors…read morewere uneven and there were cracks in the walls. Sammy came and addressed each concern that I had and assessed the crawlspace. He gave me so much helpful information and explained everything carefully, even drew diagrams! You can tell that he cares about his clients and their safety. He is also very personable and makes light jokes! In total, my experience was very positive and while there is work to be done on my house, I have more peace of mind now.

    RetroCal - contractors - Updated August 2026

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