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Business Details
37 Years
experience
Trusted Seismic Retrofit Solutions Since 1989
Founded in 1989, Courteous Construction Company Inc has established itself as a leader in seismic design and construction. Our expertise spans seismic rehabilitation and design/build solutions, with a proven track record of completing millions of square feet of projects across California. We specialize in retrofitting Un-Reinforced Masonry (URM), Reinforced Masonry, Tilt-Up, and Soft-Story buildings to meet modern seismic standards. Our team combines decades of engineering experience with a commitment to efficiency, ensuring minimal disruption to building operations while delivering cost-effective permits and high-quality results. With offices in Southern and Northern California, we serve diverse regions from Humboldt to San Diego, addressing the unique challenges of seismic safety for buildings and bridges.

Our leadership in the field is built on a foundation of technical expertise, client-focused service, and a deep understanding of California's evolving seismic regulations. We pride ourselves on standardizing design processes while maintaining flexibility to accommodate current building uses, ensuring compliance without compromising functionality. Our decades of experience and thousands of completed projects underscore our dedication to advancing earthquake resilience in California's infrastructure.
Services
Seismic Retrofit Seismic Design/Build URM Retrofits Tilt-Up Retrofits Soft-Story Retrofits
Details
  • Year established: 1989
Highlights and features
  • We have over 33 years of experience in seismic engineering and construction.
  • Our team combines engineering and construction expertise under one firm.
  • We've completed millions of square feet of seismic retrofit projects.
  • We specialize in complex building types including URM and Tilt-Up structures.
  • Our standardized design process ensures cost-effective permit approvals.
Services
Seismic Retrofit
Our seismic retrofit services strengthen existing buildings to meet California's evolving earthquake safety standards. We specialize in Un-Reinforced Masonry (URM), Tilt-Up, and Soft-Story structures, using proven engineering techniques to enhance structural integrity while minimizing operational disruption. With over 33 years of experience and millions of square feet completed, we deliver code-compliant solutions tailored to each building's unique requirements.
Seismic Design/Build
Our design/build approach combines engineering and construction expertise under one contract, streamlining the retrofit process. This method ensures coordinated project execution from initial assessment through final implementation, reducing timelines and costs. Our team develops customized solutions that balance seismic compliance with building functionality, maintaining structural integrity while accommodating ongoing operations in commercial, industrial, and multi-family properties.
URM Retrofits
We specialize in retrofitting Un-Reinforced Masonry (URM) buildings, a critical focus since the 1980s. Our solutions reinforce vulnerable masonry structures to prevent collapse during seismic events while preserving architectural elements. With experience across California counties, we implement code-compliant upgrades that enhance safety without compromising building aesthetics or functionality for commercial and residential properties.
Tilt-Up Retrofits
Our Tilt-Up retrofit expertise addresses pre-1976 concrete structures identified as seismic risks. We implement reinforcement systems that improve structural performance during earthquakes while maintaining building usability. With extensive experience in industrial and commercial facilities, we deliver solutions that meet modern safety standards while minimizing disruption to operations and preserving the building's core functionality.
Soft-Story Retrofits
We address Soft-Story building vulnerabilities in multi-family residential structures across major California cities. Our retrofits reinforce weak lower levels to prevent collapse during seismic events, ensuring compliance with local ordinances. Using proven engineering techniques, we strengthen structural frames while maintaining tenant access and building functionality throughout the retrofit process in urban environments.
People
Medi Rezazadeh
President
President and founder with over 33 years of engineering and construction experience. Holds Civil Engineering degrees from California State University, Long Beach. Established Courteous Construction in 1989 and oversees seismic retrofit projects across California.
Ari Rezazadeh
SVP
Senior Vice President with business administration degrees from USC's Marshall School. Specializes in project management for large-scale construction across multi-family, industrial, and infrastructure sectors. Oversees diverse asset classes while maintaining operational efficiency.
Do Tran
Chief Engineer
Licensed Professional Engineer with 28+ years at Courteous Construction. Holds Civil Engineering degree from University of New Orleans. Manages engineering operations for Northern and Southern California projects since joining in 1996.
Amir Pardakhti
Engineer and Construction Project Manager
Dual-role engineer and project manager with Master's in Civil Engineering from California State University, Northridge. Specializes in multi-family residential and masonry retrofits across California, combining technical expertise with efficient project execution.
Questions
What types of buildings do you specialize in retrofitting?
We specialize in Un-Reinforced Masonry (URM), Tilt-Up concrete, and Soft-Story buildings across commercial, industrial, and multi-family residential sectors throughout California.
How long have you been providing seismic retrofit services?
Courteous Construction has been a leader in seismic retrofitting since 1989, with over 33 years of continuous service across California.
Do you handle both engineering and construction phases?
Yes, we offer integrated design/build services combining engineering and construction under one contract for streamlined project execution.
What areas of California do you serve?
We operate statewide with offices in Southern California (Glendale) and Northern California (Danville), serving regions from Humboldt to San Diego.
Can you work on projects without disrupting building operations?
Our retrofit methods prioritize minimal disruption, maintaining building functionality during upgrades while accommodating current usage requirements.
What sets your company apart from other contractors?
Our combined engineering/construction expertise, 33+ years of specialized seismic experience, and standardized design process deliver efficient, code-compliant solutions tailored to each structure's needs.