Business Details
50+ Years
experience
Engineering and Surveying Experts in Northeast Wisconsin
Founded in 1957 by Theodore J. Harris, Harris & Associates has established itself as a trusted leader in civil and structural engineering services. Our multidisciplinary team of licensed professionals combines decades of experience with modern technology to deliver tailored solutions for commercial, residential, and industrial projects. As a client-focused firm, we prioritize active involvement in every project phase while maintaining personalized attention to client needs.Our expertise spans projects from small home additions to large-scale retail facilities, serving diverse clients including developers, municipalities, and engineering firms across multiple states. With 80% of our work coming from repeat clients, our reputation for reliability and technical excellence has been built through consistent delivery of code-compliant, future-ready engineering solutions since our incorporation in Wisconsin.
Services
Structural Engineering
Civil Engineering
Land Surveying
Architectural Services
Project Management
Details
- Year established: 1957
Highlights and features
- We offer 65+ years of continuous engineering experience since 1957
- Our firm maintains 80% repeat client business through consistent delivery
- We provide multidisciplinary in-house engineering and surveying expertise
- Our principals remain directly involved in all critical project phases
- We combine technical excellence with personalized client communication
Services
Structural Engineering
Our structural engineers specialize in designing safe, code-compliant structures for commercial, residential, and agricultural applications. We provide comprehensive solutions including foundation design, equipment support systems, and retrofitting for existing structures. Our expertise covers seismic analysis, snow load calculations, and forensic evaluations for fire or structural damage assessment.
Civil Engineering
We deliver end-to-end civil engineering services for land development projects. Our capabilities include stormwater management design, erosion control planning, and municipal permitting assistance. We specialize in creating functional site layouts that balance client needs with environmental considerations and regulatory requirements across commercial and residential developments.
Land Surveying
Our licensed surveyors provide precise ALTA/NSPS surveys, topographic mapping, and property boundary determinations. We support construction projects through accurate layout staking and as-built documentation. Our team handles floodplain analysis, subdivision plats, and legal descriptions for both public and private sector clients.
Architectural Services
We offer architectural solutions for commercial, retail, and multi-family residential buildings. Our services include space planning, building code compliance reviews, and construction documentation. Our integrated approach ensures architectural designs align with structural requirements and meet all applicable regulatory standards for new constructions and renovations.
Project Management
Our professionals oversee all aspects of engineering projects from concept through completion. We coordinate between clients, contractors, and regulatory agencies to ensure timely delivery within budget constraints. Our management approach emphasizes clear communication, risk mitigation, and quality control across diverse construction projects.
People
Robert D. Tollefson
President
With over 35 years of engineering experience, Mr. Tollefson leads structural design projects for commercial and industrial clients. He specializes in equipment platforms, building foundations, and snowmobile bridge systems.
Robert J. Harris
Land Surveyor
A licensed surveyor since 1988, Mr. Harris brings 40 years of Wisconsin land surveying expertise. He previously served as President of the Wisconsin Society of Land Surveyors and specializes in Fox Valley region projects.
Calvin L. Tollefson
Civil Engineer
With 35 years of civil engineering experience, Mr. Tollefson focuses on stormwater management and municipal permitting. He helps clients navigate complex regulatory requirements for site development projects.
Keith Walenski
Land Surveyor
Licensed since 1995, Mr. Walenski provides surveying services with 31 years of total experience. He specializes in legal descriptions and construction staking for various land development projects.
Questions
What engineering disciplines does Harris & Associates offer?
We provide structural engineering, civil engineering, and architectural services for commercial, residential, and industrial projects.
Do you handle both small and large-scale projects?
Yes, our experience ranges from single-room additions to 200,000 square foot retail facilities across Wisconsin and surrounding states.
Can you assist with municipal permitting requirements?
Our civil engineering team specializes in navigating municipal regulations and securing necessary permits for land development projects.
Do you offer land surveying services for property transactions?
Yes, we provide ALTA/NSPS surveys, certified survey maps, and floodplain analysis required for property transactions.
How do you ensure code compliance in architectural designs?
Our architectural team conducts thorough building code reviews and collaborates with structural engineers to ensure all designs meet current regulations.
What experience do your engineers have with infrastructure projects?
Our team has decades of experience in stormwater management, erosion control, and municipal infrastructure improvements for public and private clients.
