Business Details
33 Years
experience
Your Trusted Construction Partner in Trabuco Canyon
Founded in 1993 by Rob Romine and Jim Johnston, Romine Johnston Industries has established itself as a leader in high-quality engineering solutions across Southern California. With over three decades of combined experience in mechanical and civil engineering, our founders built a company dedicated to delivering innovative design-build projects. In 2012, we expanded our capabilities by launching Gregory Design under the leadership of Caitlin Gregory, enhancing our architectural and engineering services. Our team of licensed professionals specializes in clean rooms, HVAC systems, parking structures, and MEP design for large custom homes. Backed by decades of industry expertise and a commitment to excellence, we provide tailored solutions that meet the unique needs of each project.Our leadership team includes Stanford and UC Berkeley graduates with extensive backgrounds in engineering, finance, and project management. We maintain rigorous quality standards through our licensed contractors and in-house technical experts. Our field operations are supported by experienced professionals like Cesar and Angel Escobido, who bring specialized skills in sheet metal installation and refrigeration services. With a focus on client collaboration and technical precision, we serve commercial and residential clients throughout Southern California. Our legacy of innovation continues through strategic growth initiatives and a steadfast dedication to engineering excellence.
Services
Clean Rooms
HVAC Systems
Parking Structures
Plans & Specs
Plumbing Design
MEP Engineering
Sheet Metal Installation
Refrigeration Services
Details
- Year established: 1993
Highlights and features
- We offer 30+ years of engineering experience with licensed professionals
- Our in-house design team provides integrated architectural solutions
- We maintain HVAC contractor licenses for specialized mechanical systems
- Our leadership includes Stanford engineering graduates with industry expertise
- We deliver comprehensive MEP design and clean room construction services
Services
Clean Rooms
We design and construct specialized clean rooms meeting strict contamination control standards for medical, pharmaceutical, and technology applications. Our engineering team ensures compliance with industry-specific regulations while maintaining optimal air quality and environmental controls. These controlled environments feature advanced HVAC systems and specialized construction materials.
HVAC Systems
Our licensed contractors install and maintain commercial HVAC systems with energy-efficient solutions for temperature and air quality management. We provide custom designs for residential and commercial buildings, including complex mechanical systems requiring specialized engineering expertise and code compliance.
Parking Structures
We deliver durable parking structures using reinforced concrete and steel construction methods with optimized space utilization. Our designs incorporate safety features, accessibility compliance, and long-term maintenance considerations. Projects range from small commercial lots to multi-level parking facilities.
MEP Engineering
Our mechanical, electrical, and plumbing engineering services integrate all building systems for residential and commercial projects. We create coordinated designs ensuring optimal functionality while meeting energy efficiency standards and local building codes for new construction and renovations.
Sheet Metal Installation
Our skilled technicians perform precision sheet metal fabrication and installation for HVAC components, architectural elements, and industrial applications. We work with various metals to create custom ductwork, flashing systems, and structural components using modern fabrication techniques.
People
Robert Romine
President
Mechanical engineering graduate from Stanford with 30+ years in construction. Licensed HVAC contractor overseeing all RJI projects since founding in 1993.
Caitlin Gregory
VP of Design
UC Berkeley architecture graduate with experience in mechanical and landscape engineering. Led Gregory Design since its 2012 creation under RJI as DBA.
Janice Romine
CFO
Former nurse with financial management expertise. Handles RJI's finances since 1993, bringing organizational skills from healthcare to construction business operations.
Cesar Escobido
Field Foreman
10-year RJI veteran specializing in sheet metal installation. Expert in HVAC components and refrigeration services, working closely with his brother Angel on field operations.
Angel Escobido
Field Foreman
Licensed refrigeration specialist with decade-long RJI experience. Collaborates with Cesar Escobido on sheet metal work and mechanical system installations for commercial projects.
Questions
What construction services does Romine Johnston Industries offer?
We specialize in clean rooms, HVAC systems, parking structures, MEP engineering, plumbing design, and sheet metal installation for commercial and residential projects.
Do you handle both design and construction phases?
Yes, our Gregory Design division provides architectural solutions integrated with our construction services for complete design-build projects.
Are your contractors licensed for mechanical work?
Our team includes licensed HVAC contractors with expertise in mechanical systems installation and maintenance.
What areas do you serve?
We operate throughout Southern California, focusing on Orange County and surrounding regions.
Can you handle large custom home projects?
Yes, we provide specialized MEP design and mechanical engineering services for large custom residential properties.
