BBA Consultants Merges With Tierra Group International

Integral Consulting Acquires Heritage Environmental Consultants

September 9, 2026

Professional Services

Integral Consulting Inc. announced it has acquired Heritage Environmental Consultants, a Western U.S. provider of environmental planning, permitting, and scientific services to industry and government clients. The deal is intended to strengthen Integral’s Mountain West presence and expand integrated environmental and regulatory capabilities across the project lifecycle.

EIS Holdings Acquires Tierra Consulting Group

May 20, 2025

Environmental Services

EIS Holdings, LLC has acquired Tierra Consulting Group, LLC, a Pompano Beach, Florida–based environmental consulting and groundwater treatment specialist. The deal expands EIS's presence in the Southeast and adds high-volume groundwater treatment, dewatering, subsurface remediation, surveying and mapping capabilities to its nationwide environmental and infrastructure services platform.

Certerra Acquires Tierra, Inc.

March 27, 2025

Engineering Services

Certerra, a technology-enabled testing, inspection and certification platform backed by OceanSound Partners, has acquired Tierra, Inc., a Tampa-based geotechnical and materials engineering firm with 27+ years of experience and over 210 employees. The deal expands Certerra's presence and capabilities in the U.S. Southeast—adding laboratory and field testing capacity in Tampa, Orlando and Pensacola—and will enhance service offerings to government, transportation, municipal and commercial infrastructure clients.

Integral Group and Ross & Baruzzini Combine to Form Introba

August 16, 2022

Engineering Services

Integral Group and Ross & Baruzzini are combining under the new brand Introba to create a global building engineering and consulting firm. The unified organization will have over 1,100 employees across 31 offices in the United States, Canada, the United Kingdom, Serbia, and Australia to expand capabilities in sustainable, resilient engineering and technology-enabled consulting.

Brandt Information Services Acquires Terra Technology Group

March 17, 2022

Software

Brandt Information Services, a NexPhase Capital-backed provider of outdoor recreational licensing and reservation software, has acquired Terra Technology Group (TTG), a SaaS provider of outdoor licensing and recreational solutions. The acquisition integrates TTG's platform with Brandt's Go Outdoors product to expand capabilities for government agencies managing licenses, permits and reservations; financial terms were not disclosed.

Bowman Consulting Group Acquires Terra Associates, Inc.

December 27, 2021

Engineering Services

Bowman Consulting Group Ltd. (NASDAQ: BWMN) entered into a definitive agreement to acquire Terra Associates, Inc., a Houston- and San Antonio-based civil engineering and surveying firm, with closing scheduled for December 31, 2021. The acquisition, financed with cash, seller financing and stock, is expected to be immediately accretive and to contribute approximately $5.5 million of annualized net service billing while expanding Bowman’s Texas operations and service capabilities.