Business Details
50+ Years
experience
Expert Civil Engineering Solutions in Wisconsin
For over 50 years, D'Onofrio Kottke & Associates has been a trusted leader in civil engineering and land surveying services across Southern Wisconsin. Our firm specializes in delivering comprehensive solutions for residential, commercial, and municipal projects, combining technical expertise with hands-on project management. We pride ourselves on maintaining long-term relationships with clients through collaborative partnerships and a commitment to excellence. Our team of licensed professionals brings decades of experience to every project, ensuring precision in planning, design, and execution. From infrastructure rehabilitation to cutting-edge developments, we focus on creating sustainable, functional spaces that meet evolving community needs.A principal is involved in every project, guaranteeing personalized attention and accountability throughout the process. Our deep understanding of local regulations and environmental considerations enables us to navigate complex challenges efficiently. With a proven track record in both public and private sectors, we continue to build upon our reputation for reliability and innovation. Our clients benefit from transparent communication, budget-conscious strategies, and a dedication to exceeding expectations. As a locally rooted firm, we remain committed to advancing Wisconsin's built environment while maintaining the highest professional standards.
Services
Civil Engineering
Land Surveying
Infrastructure Design
Storm Water Management
Project Entitlement
Construction Administration
Details
- Year established: 1973
Highlights and features
- We provide principal-led project management for every engagement
- Our team has 50+ years of combined experience in Wisconsin engineering
- We specialize in navigating complex municipal approval processes
- We offer integrated civil engineering and land surveying services
- Our solutions emphasize sustainability and regulatory compliance
Services
Land Surveying
Our comprehensive land surveying services support commercial, residential, and industrial projects. We provide precise measurements and boundary determinations using advanced technology. Our ALTA/ACSM surveys and subdivision plats ensure legal compliance and accurate property documentation.
Civil Engineering
We deliver end-to-end civil engineering solutions for new developments and infrastructure rehabilitation. Our expertise includes roadway design, utility systems, and site grading. We ensure projects meet regulatory requirements while optimizing functionality and sustainability.
Storm Water Management
Our storm water management services focus on sustainable drainage systems and flood prevention. We design detention basins, permeable pavements, and green infrastructure to manage runoff effectively while protecting water quality.
Project Entitlement
We guide clients through complex regulatory processes for project approvals. Our team prepares technical documentation and coordinates with agencies to secure necessary permits for land development and infrastructure projects.
Construction Administration
We provide ongoing construction administration to ensure design intent is maintained. Our services include site visits, quality control checks, and coordination between contractors and municipal inspectors throughout the building process.
People
Daniel Day
President
Licensed Professional Engineer with 30+ years of experience in land development. Leads project entitlement and design processes. Graduated from University of Wisconsin-Platteville with Civil Engineering degree.
Bruce Hollar
Principal Engineer
Specializes in public infrastructure projects with expertise in street rehabilitation and subdivision design. Licensed Professional Engineer from University of Wisconsin-Madison with Civil & Environmental Engineering background.
Nathan Lockwood
Principal Engineer
Storm water management expert with extensive commercial development experience. Serves on technical committees. Holds Biological Systems Engineering degree from University of Wisconsin-Madison and PE license.
Brett Stoffregan
Principal Land Surveyor
Professional Land Surveyor with 20+ years of experience in certified surveys and ALTA/ACSM standards. Graduated from Madison Area Technical College with Civil Engineering Technology degree and maintains Wisconsin surveying license.
Ron Klaas
Past President
40-year veteran in civil engineering and surveying. Provides strategic guidance for complex projects. University of Wisconsin-Platteville graduate with Civil Engineering degree and active Professional Engineer license.
Questions
What services does D'Onofrio, Kottke and Associates offer?
We provide civil engineering, land surveying, storm water management, project entitlement, and construction administration services for residential, commercial, and municipal projects.
How long has the firm been in business?
We've served Wisconsin clients for over 50 years, delivering engineering and surveying solutions since our founding in 1973.
What makes your firm different from competitors?
Our principal-led approach ensures direct involvement in every project, combining technical expertise with personalized service and local regulatory knowledge.
Which areas do you serve?
We primarily serve South Central Wisconsin and surrounding regions, with extensive experience in local municipal requirements and environmental conditions.
