Call Now
Website
Call
Business Details
33 Years
experience
Emergency
services
Trusted Engineering Contractors in Monrovia, CA
Perry C. Thomas Inc. has been a trusted leader in engineering construction since 1993, specializing in utility infrastructure and specialty projects. With over 35 years of combined experience, our team delivers wet and dry utility installation, substation construction, underground vault repair, and slope and tunnel remediation services. We serve local cities and companies across California, prioritizing quality workmanship and client satisfaction. Our 4 specialized crews have completed 3,456 projects, earning 329 certifications and serving 8,456 satisfied customers. Led by President Steve Lewis and Vice President Robert McDonnell Jr., our team maintains a legacy of expertise established by founder Perry Thomas in 1978.

We combine advanced directional boring technology with traditional construction methods to minimize disruption while ensuring durable infrastructure solutions. Our commitment to safety, regulatory compliance, and innovative problem-solving has solidified our reputation as industry leaders in utility construction.
Services
Asphalt Paving Directional Boring Substation Construction Concrete Flatwork Sewer Construction Storm Drain Construction Precast Vault Installation Water Line Construction Trenching Concrete Substructures
Details
  • Year established: 1993
Highlights and features
  • We offer 35+ years of specialized utility construction experience
  • Our 4 dedicated crews complete 3,456+ projects successfully
  • We maintain 329 industry certifications for quality assurance
  • Our team includes veteran professionals with 20+ years average tenure
  • We combine advanced directional boring with traditional construction methods
Services
Asphalt Paving
Commercial asphalt paving solutions enhance property aesthetics and functionality. We repair cracks, potholes, and uneven surfaces to create safe, accessible parking lots. Our experts use premium materials to ensure long-lasting results that maintain business continuity during installation.
Directional Boring
Underground utility installation without surface disruption. Our directional boring services install gas, electrical, and telecom lines beneath urban infrastructure. This minimizes environmental impact while navigating existing underground utilities with precision.
Substation Construction
Critical electrical substation construction for reliable power distribution. Our team builds code-compliant facilities with specialized expertise in safety protocols and regulatory requirements. We ensure uninterrupted energy flow to communities and businesses.
Concrete Flatwork
Durable concrete solutions for sidewalks, patios, and industrial flooring. We use premium cement mixtures with decorative finishing options. Our work meets ADA accessibility standards while providing aesthetic customization for commercial properties.
Storm Drain Construction
Custom stormwater management systems prevent property damage. We install precast concrete drainage systems that withstand chemical exposure and heavy rainfall. Our solutions protect foundations while meeting environmental regulations for water runoff control.
People
Steve Lewis
President
President Steve Lewis leads operations with 20 years of construction industry experience. He oversees project execution and strategic growth while maintaining client relationships established during his tenure as field supervisor.
Robert McDonnell Jr.
Vice President
Vice President Robert McDonnell Jr. manages day-to-day operations with extensive field experience. He ensures project compliance with safety standards and coordinates crews for optimal efficiency across multiple job sites.
Chris Mikity
Estimator
Estimator Chris Mikity provides cost analysis with institutional knowledge from 30+ years with the company. He develops accurate project budgets while maintaining continuity with original founder Perry Thomas' business principles.
Lisa Lewis
Office Manager
Office Manager Lisa Lewis coordinates administrative operations with institutional knowledge of company processes. She manages client communications and ensures smooth project documentation workflows for construction teams.
Questions
What construction services do you specialize in?
We specialize in utility infrastructure including asphalt paving, directional boring, substation construction, concrete work, sewer/storm drain systems, and water line installation across California.
How long has your company been in business?
Incorporated in 1993, our team has 35+ years of combined experience with founder Perry Thomas establishing operations in 1978 and current leadership maintaining continuity since 2022.
Do you handle emergency construction projects?
Yes, we offer emergency services for critical infrastructure repairs with rapid response teams available to address urgent utility and structural issues.
What areas do you serve?
While based in Monrovia, CA, we serve clients throughout Los Angeles County and California for utility construction and infrastructure projects.
How do you ensure project quality?
We maintain 329 industry certifications, employ experienced crews with 20+ year average tenure, and follow strict quality control protocols for all construction phases.
Can you handle large-scale projects?
Our 4 specialized crews have completed 3,456+ projects including major infrastructure like the Biegler Substation and USC electrical ducting, demonstrating capacity for complex assignments.