Certerra (formerly RMA Companies)

Certerra, formerly known as RMA Companies, is a leading provider of technology-enabled testing, inspection, and certification services specializing in materials engineering and earth sciences. With over 1,800 employees and more than 50 nationwide locations, Certerra has been a trusted partner in ensuring the quality and longevity of critical infrastructure for over 70 years.

The company offers a comprehensive suite of services designed to support every phase of construction projects:

• Testing, Inspection & Certification: Certerra operates a national network of certified laboratories and mobile labs, providing construction materials testing, inspection, and quality management services. These resources are tailored to meet specific needs, ensuring compliance and performance standards are consistently met.
• Engineering Services: This division offers geotechnical engineering, environmental consulting, and pavement engineering. Their expertise includes preliminary site assessments, hazard evaluations, and complex value engineering projects, delivering reliable outcomes for critical infrastructure.
• Subsurface Imaging: Utilizing advanced geophysical techniques, Certerra maps, detects, and analyzes underground structures, utilities, and geological conditions. This service helps prevent setbacks during construction by providing clear insights into subsurface conditions.
• Instrumentation & Monitoring: These services include geotechnical, structural, and environmental monitoring to mitigate construction impacts and limit stakeholder risk. Services include construction surveys, crack monitoring, and foundation integrity testing.
• Specialty Test Labs: The company operates advanced facilities that provide comprehensive data and certifications, ensuring compliance and performance of a wide range of building and construction materials.

Certerra serves a diverse clientele including infrastructure asset owners, engineering and construction contractors, manufacturers, and design professionals. Their services span sectors such as transportation, government, healthcare, education, energy, and water.

In March 2025, Certerra expanded its capabilities by acquiring Tierra, a Tampa-based geotechnical and materials engineering firm. This acquisition strengthened Certerra's presence in the Southeast and broadened client service opportunities.

The company's mission is to be the partner of choice in materials engineering and earth sciences. It combines nationwide capabilities with local knowledge to assure quality and advance innovation in critical infrastructure.

With a commitment to integrity, innovation, and partnership, Certerra continues to deliver "Materially Better" outcomes, ensuring communities are built to last.

Locations

Certerra operates offices and laboratory facilities across the United States, including key locations such as:

• Rialto, CA, USA
• Jurupa Valley, CA, USA
• Rancho Cucamonga, CA
• Sun Valley, CA
• San Diego, CA
• Cape Canaveral, FL
• Pensacola, FL
• Tampa, FL