Business Details
50+ Years
experience
Emergency
services
Expert General Contracting Services in Monrovia, CA
H.C. Olsen Construction has been a trusted general contractor since 1946, specializing in new construction, building alterations, and infrastructure improvements. Our focus on building long-term client relationships has driven our success across commercial, educational, and telecommunications sectors. With expertise in seismic upgrades, cellular site installations, and emergency response, we deliver projects on time and within budget while maintaining union workforce standards.Our commitment to quality, safety, and innovation ensures minimal disruption to client operations. Headquartered in Monrovia, CA, we serve California, Arizona, and Nevada with a proven track record of exceeding client expectations through decades of industry experience.
Services
New Construction
Building Alterations
Cellular Site Installation
Seismic Upgrades
Infrastructure Improvements
Emergency Response
Details
- Year established: 1946
Highlights and features
- 75+ years of experience in general contracting and telecommunications infrastructure
- Union workforce with 24/7 emergency response capabilities
- Specialized expertise in seismic upgrades and cellular site installations
- Comprehensive quality and safety programs with dedicated managers
- Proven track record with major clients like AT&T and University of Southern California
Associations and certifications
- MWBE (Minority- and Women-Owned Business Enterprise)
- Public Utilities-Certified
Services
New Construction
We specialize in constructing new commercial buildings, educational facilities, and infrastructure projects. Our team manages ground-up developments from foundation to completion, ensuring compliance with modern building codes and client specifications. With decades of experience in Southern California, we deliver energy-efficient, durable structures tailored to evolving business needs.
Seismic Upgrades
Our seismic upgrade services reinforce existing buildings against earthquake damage. We implement structural modifications to meet current safety standards while minimizing operational disruption. This includes foundation bolting, shear wall installation, and non-structural component securing for commercial and institutional properties.
Cellular Site Installation
We install and maintain cellular antennas and communication sites for major telecom providers. Our services include tower construction, equipment mounting, and ongoing site maintenance. With specialized expertise since the early wireless era, we ensure reliable network infrastructure deployment across diverse locations.
Emergency Response
Our 24/7 emergency response team addresses urgent building failures and disaster recovery needs. We provide rapid repairs for broken windows, fire damage, and security breaches with pre-staged equipment and personnel. This service ensures business continuity during critical incidents through immediate on-site intervention.
Infrastructure Improvements
We upgrade essential building systems including HVAC, electrical, and fire safety infrastructure. Our work integrates modern technologies like DDC controls and BMS systems to enhance efficiency. These improvements extend asset lifespan while meeting current regulatory requirements for commercial and institutional facilities.
Questions
What construction services do you specialize in?
We specialize in new construction, seismic upgrades, cellular infrastructure, and emergency response services for commercial and educational clients.
How long has your company been in business?
H.C. Olsen Construction has provided general contracting services since 1946, with 75+ years of industry experience.
Do you offer emergency construction services?
Yes, we maintain 24/7 emergency response capabilities for urgent repairs and disaster recovery situations.
Which areas do you serve?
We operate throughout California, Arizona, and Nevada with local field personnel coverage.
Are you a union contractor?
Yes, we're a signatory union contractor with Laborers and Carpenters unions.
What safety programs do you implement?
We maintain dedicated quality and safety managers who conduct regular training, inspections, and client satisfaction benchmarking.
