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Business Details
20 Years
experience
Expert Civil Engineering Solutions in Corona, CA
Proactive Engineering Consultants is a Southern California-based civil engineering firm with over 35 years of collective management experience. We specialize in land development services for public agencies and private companies, offering comprehensive solutions including survey and mapping, hydrology/hydraulic studies, street and utility improvement plans, site planning, and construction management. Our team of seasoned professionals, including principals with 40+ years of industry experience, delivers tailored engineering expertise across residential, commercial, industrial, and public works projects.

We prioritize client collaboration, environmental stewardship, and innovative problem-solving to ensure successful project outcomes. Our commitment to excellence is demonstrated through our track record of managing complex developments, from small infill sites to large master-planned communities. With offices in Corona and Foothill Ranch, we provide localized expertise while serving clients throughout California. Our proactive approach ensures projects are completed safely, on time, and within budget, maintaining strict adherence to regulatory requirements and industry best practices.
Services
Civil Engineering Stormwater Management Dry Utility Consulting Construction Support Cost Estimating Land Surveying Floodplain Analysis Utility Design Permitting Site Planning
Details
  • Year established: 2006
Highlights and features
  • We have 40+ years of experience in civil engineering and land development
  • Our principals hold advanced degrees and industry-recognized certifications
  • We provide full lifecycle project management from entitlement to completion
  • Our team includes award-winning engineers with specialized expertise
  • We maintain a 98% client retention rate through exceptional service delivery
What people say
Best civil engineer Easy to work with Exceptional expertise Proactive approach Reliable delivery
Services
Civil Engineering
Our civil engineering services encompass land development for public and private sector clients. We provide comprehensive solutions including site planning, grading, drainage design, utility infrastructure, and regulatory permitting. Our team specializes in converting raw land into functional developments while balancing client needs with environmental compliance. With expertise in both small-scale and large master-planned projects, we deliver technically sound solutions that maximize land use efficiency and meet all regulatory requirements.
Stormwater Management
We develop customized stormwater management solutions that address runoff challenges while maintaining environmental compliance. Our services include hydrology studies, floodplain analysis, BMP design, and water quality management. By integrating low-impact development techniques, we create sustainable systems that minimize environmental impact while ensuring regulatory compliance. Our team works closely with agencies to implement cost-effective solutions that protect downstream ecosystems and meet evolving water quality standards.
Dry Utility Consulting
Our dry utility consulting services specialize in coordinating power, communications, and gas infrastructure for development projects. We manage overhead-to-underground conversions, easement negotiations, and utility conflict resolution. By providing comprehensive budget estimates and design solutions, we ensure seamless integration of utility systems with development plans. Our expertise in CPUC regulations and utility company coordination helps streamline project approvals and minimize construction delays for both public and private sector clients.
Construction Support
We offer full-spectrum construction management services for projects of all sizes. Our team provides pre-construction planning, budgeting, scheduling, and on-site oversight to ensure projects meet quality, cost, and timeline objectives. With 85+ experienced professionals, we manage complex developments from entitlement through completion. Our services include value engineering, change order management, and quality control to ensure successful project delivery while maintaining strict safety and compliance standards.
Cost Estimating
Our cost estimating services provide accurate, defensible construction cost projections at every design phase. We deliver detailed quantity takeoffs, value engineering recommendations, and budget validation services to help clients make informed financial decisions. With decades of industry experience, we identify cost-saving opportunities while maintaining design integrity. Our estimates support landowners, developers, and public agencies in securing funding and managing project budgets through all stages of development.
People
Tom Braun
President/CEO
With 40+ years of experience, Tom Braun leads Proactive Engineering as President/CEO. He specializes in public works and land development projects, managing large engineering teams and complex developments. Holding BS and MS degrees in Civil Engineering, he focuses on practical project execution and client collaboration.
Mark Anderson
Principal
Mark Anderson brings 40 years of diverse engineering experience to complex development projects. A Cal Poly Pomona alumnus and ASCE Lifetime Achievement Award recipient, he specializes in resolving challenges related to terrain, water resources, and environmental preservation through innovative engineering solutions.
John McCarthy
Principal
John McCarthy specializes in stormwater management and flood control solutions. With expertise in hydraulic analysis and drainage design, he develops comprehensive water management systems for public and private sector clients. His experience includes projects for Caltrans, USACE, and multiple California counties.
Bob Gregory
Principal
Bob Gregory provides expert dry utility consulting services, coordinating complex infrastructure systems for commercial and residential developments. With a focus on utility conflict resolution and regulatory compliance, he ensures seamless integration of power, communications, and gas systems with development plans.
Tony Marhoefer
Principal
Tony Marhoefer leads construction management efforts with expertise in project execution and team coordination. His background in strategic planning and cost control ensures successful delivery of complex developments while maintaining safety and compliance standards across multidisciplinary teams.
Questions
What types of civil engineering projects do you handle?
We handle residential, commercial, industrial, and public works projects including land development, stormwater management, utility design, and construction management throughout California.
How do you ensure compliance with environmental regulations?
Our team integrates environmental stewardship into every project phase, implementing low-impact development techniques and collaborating with agencies to meet evolving water quality and land use standards.
What construction management services do you provide?
We offer full lifecycle construction management including budgeting, scheduling, quality control, change management, and safety oversight to ensure successful project delivery.
How do you handle complex utility coordination?
Our dry utility experts manage overhead-to-underground conversions, easement negotiations, and conflict resolution while ensuring compliance with CPUC regulations and utility company requirements.
What stormwater management solutions do you offer?
We provide comprehensive stormwater solutions including BMP design, floodplain analysis, hydrology studies, and water quality management tailored to project-specific needs and regulatory requirements.
How do you ensure accurate cost estimating?
Our experienced estimators use detailed quantity takeoffs and industry data to deliver defensible cost projections at every design phase, helping clients maintain budget control throughout project development.