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Business Details
32 Years
experience
Expert Heavy Civil Construction Services in Oviedo
Southern Development & Construction, Inc (SDC) has been a trusted leader in heavy civil construction and development since 1994. Our 30+ years of experience enable us to deliver complex projects on time and within budget through certified expertise, advanced technology, and a commitment to safety and quality. With over 400 pieces of specialized equipment, including GPS-guided machinery, and a team of seasoned professionals, we execute underground utility work, land development, and heavy civil infrastructure projects across Central Florida.

Our financial strength, evidenced by a $250M surety line and strong vendor relationships, supports our ability to tackle large-scale projects while maintaining ethical standards and client-focused solutions that have earned us industry recognition and repeat clients.
Services
Underground Utility Services Development Services Heavy Civil Contractor Roadway Construction Land Development
Details
  • Year established: 1994
Highlights and features
  • We offer 30+ years of heavy civil construction experience with GPS-guided equipment.
  • Our team holds certifications in electrical, underground, and fire contracting.
  • We maintain a $250M surety line for large-scale project capabilities.
  • Our in-house survey and technology teams optimize project accuracy and efficiency.
  • We self-perform critical tasks like concrete work and earthmoving for quality control.
What people say
On time delivery Advanced GPS technology Experienced leadership Cost-effective solutions Strong safety record
Services
Underground Utility Construction
We specialize in comprehensive underground utility systems including water supply, sanitary sewers, stormwater management, and wastewater treatment networks. Our team handles complex projects with precision, utilizing advanced GPS technology for accurate installation and maintenance. Clients benefit from our 30+ years of experience in designing and constructing durable infrastructure that meets regulatory standards while minimizing environmental impact.
Land Development
Our land development services integrate earthwork, grading, and utility coordination to transform raw land into functional commercial or residential spaces. We optimize project timelines through self-performed tasks like clearing and concrete work, reducing costs by up to 20%. Clients receive end-to-end solutions from initial planning to final infrastructure installation, supported by our in-house survey teams and 400+ equipment fleet.
Heavy Civil Construction
We deliver large-scale infrastructure projects including roadways, bridges, and public works using specialized equipment and engineering expertise. Our capabilities span design-build solutions and FDOT-certified roadway construction, supported by a $250M surety line. Clients receive cost-effective, high-quality results through our vertically integrated approach that combines in-house resources with proprietary technology for real-time project monitoring.
People
Tom McNamara
President & CEO
Third-generation contractor with 30+ years of experience managing $1B+ in projects. Holds multiple Florida contractor licenses and a UCF engineering degree. Recognized as 2022 UCF Alumni of the Year for industry leadership and community contributions.
Tim Bayer
COO
Oversees project execution and client relations with 15+ years in heavy highway construction. Manages budgets, scheduling, and subcontractor coordination while leveraging prior leadership roles at major civil contractors to drive operational efficiency.
Shane Cox
VP of Estimating
Directs complex project bids with expertise in conceptual and detailed cost analysis. Brings 20+ years of national estimating experience, ensuring accurate proposals for large infrastructure projects through advanced 3D modeling and risk assessment techniques.
David Leehy
CFO
Certified Public Accountant with 30+ years in construction finance. Manages financial strategy, risk mitigation, and compliance across multi-million-dollar projects while maintaining the company's strong credit rating and $250M surety capacity.
Ronnie Yelvington
VP of Construction
30-year heavy civil veteran specializing in highway and commercial projects. Oversees pre-construction planning, cost control, and safety compliance while ensuring adherence to FDOT standards and client specifications through detailed subcontractor coordination.
Questions
What construction services does SDC specialize in?
SDC specializes in underground utility systems, land development, and heavy civil infrastructure including roadways, bridges, and public works projects.
How long has SDC been in business?
Southern Development & Construction has operated continuously since 1994, providing 30+ years of construction expertise.
What geographic areas does SDC serve?
We primarily serve Central Florida but have completed projects statewide including Miami, Tampa, and Jacksonville.
What equipment does SDC utilize?
Our fleet includes 400+ pieces of GPS-guided machinery like dozers, excavators, and motor graders for precision earthmoving.
How does SDC handle project management?
We employ dedicated project managers with 10+ years average experience, using proprietary software for real-time budget and schedule tracking.
What safety certifications does SDC hold?
We maintain OSHA 30 certifications, SWPPP inspector credentials, and FDOT roadway contractor qualifications.