who we are

Grimm & Chen Structural Engineering, Inc.

Grimm & Chen offers structural engineering services for commercial and residential projects, delivering quality, value, and responsiveness from start to finish.

With expertise in everything from low-rise retail to high-rise residential, we provide cost-effective solutions while respecting architectural vision.

Years in business 0
Projects 0
Clients 0
sq.ft. of structures completed 0
what we do

Exeptional Structural 
Solutions

We provide structural engineering design services for a wide range of commercial and residential projects. Our firm is dedicated to delivering unparalleled quality, value, and responsiveness to our clients from project conception to completion.

With experience in projects ranging from low-rise retail to high-rise residential buildings, our staff has the knowledge and skill to provide cost-appropriate structural solutions while being sensitive to architectural intent.

  • 01

    Building Design

    We partner closely with architects and owners to deliver structural solutions that are both creative and practical. Our approach emphasizes versatility—supporting ambitious design goals while meeting performance, budget, and schedule needs. We thrive on finding structural strategies that bring complex architectural ideas to life without compromising efficiency or constructability. Through BIM modeling and detailed coordination, we ensure our designs integrate smoothly with architectural elements and building systems, reducing conflicts during construction and improving overall project delivery.

  • 02

    Adaptive Reuse & Structural Renovation

    We specialize in evaluating and repurposing existing structures with creative, constructible solutions that optimize structural efficiency. Our renovation strategies are rooted in a clear understanding of existing load paths, material limitations, and performance goals—often involving selective strengthening, reconfiguration, or integration of new systems. By preserving key architectural features and minimizing demolition, we not only maintain the building’s character but also significantly reduce embodied carbon. Adaptive reuse is inherently sustainable, and we see each project as an opportunity to extend the life of a structure while enhancing its functionality and resilience.

  • 03

    Seismic Retrofit & Ordinance Compliance

    As a California-born and raised firm, seismic engineering is at the heart of our practice. We provide comprehensive retrofit solutions that enhance building safety while ensuring compliance with local ordinances. Our expertise spans a range of regulations, including LA’s Soft-Story and URM programs, allowing us to reinforce structures to improve ductility and optimize seismic performance. Through performance-based design, we tailor each retrofit for structural efficiency and cost-effectiveness—helping owners meet code requirements without unnecessary expense.

  • 04

    Historic Rehabilitation

    We recognize that historic structures are vital reflections of the history and culture within a community. Our approach to rehabilitation strikes a careful balance—preserving the architectural integrity of the building while upgrading systems to meet modern standards. We work to maintain the building’s original character, while implementing necessary improvements for functionality, safety, and efficiency. Whether retrofitting aging materials or using specialized techniques and materials, we ensure that every decision respects the building’s history. At the same time, we ensure the structure meets the performance requirements of today's use, honoring the past while preparing it for the future.

  • 05

    Structural Peer Review

    Our structural peer review services focus on ensuring that the original design is structurally sound and logically consistent. We evaluate designs based on the fundamental principles of structural engineering, local requirements, and the specific challenges of each project site. By conducting thorough assessments, we help verify that the design will perform safely and efficiently, meeting all necessary codes and requirements. Our goal is to provide objective, expert feedback that strengthens the design and minimizes risks during construction.

  • 06

    Design-Build Collaboration

    We excel in Design-Build projects, working closely with general contractors and owner representatives to provide seamless integration between design and construction. Our collaborative approach fosters clear communication and efficient decision-making, allowing us to deliver projects that meet both design intent and construction goals. By streamlining the process, we ensure that structural solutions are both cost-effective and timely, while minimizing risks and optimizing performance. Our focus is on delivering high-quality results through a unified team effort, ensuring that the project runs smoothly from concept to completion.

  • 07

    Value Engineering

    We approach value engineering with a focus on first principles, ensuring that every design decision is grounded in fundamental structural and engineering concepts. Working closely with contractors and owner representatives, we identify opportunities to reduce costs while maintaining safety, quality, and performance. By analyzing materials, construction methods, and system choices, we optimize the project’s design for efficiency and value. Our approach balances functionality with budget, providing solutions that enhance the overall quality of the project while meeting financial goals. Whether in the design phase or during construction, our value engineering process ensures that the project achieves the best possible outcome without compromising integrity.

our Team

Meet Our Team

At Grimm & Chen, collaboration, technical excellence, and a passion for thoughtful, creative design drive everything we do. We’re proud to build structures that stand strong — and relationships that stand even stronger.

  • PRINCIPAL
    Jeff Y. Chen, S.E.
  • PRINCIPAL
    Sam Grimm, S.E.
  • ASSOCIATE PRINCIPAL
    Alex Chon, P.E.
  • PROJECT DIRECTOR
    Sitanan Tanyasakulkit, S.E.
  • Sr. Project Engineer
    Artin Sarkisyan, S.E.
  • PROJECT ENGINEER
    Claire Lin, P.E.
  • PROJECT ENGINEER
    Emmanuel Flores, P.E.
  • Project Engineer
    Michael Choi, P.E.
  • Jr. Project Engineer
    Xinran Zhou, P.E.
  • Jr. Project Engineer
    Nick (Yucong) Gao, P.E.
  • BIM/CAD Manager
    Ron Thiphavong
  • BIM Specialist
    William Tuong
  • Office Manager
    Christi Hockaday
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