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Business Details
50+ Years
experience
Trusted Commercial Construction Services in Wisconsin
Keller, Inc. has been delivering construction excellence since 1960, specializing in commercial, agricultural, and aviation projects. As a 100% employee-owned company, we prioritize client collaboration, integrating design and construction from the initial discovery phase to ensure projects align with clients' unique needs. Our in-house architects, interior designers, and skilled crews manage every detail, from space analysis to onsite supervision, guaranteeing quality, timeliness, and budget adherence. With decades of experience across industries like healthcare, education, and manufacturing, we build lasting relationships by treating every project as our own.

Our transparent communication, innovative solutions, and commitment to safety have earned us repeat clients and industry recognition. Whether constructing schools, dental offices, or industrial facilities, we combine expertise with a personalized approach to transform visions into reality. Our team's dedication to continuous improvement and community impact ensures clients receive not just structures, but enduring partnerships that support long-term success.
Services
Commercial Construction Agricultural Projects Aviation Facilities Design-Build Services Construction Management Interior Design Space Analysis Onsite Supervision
Details
  • Year established: 1960
Highlights and features
  • We are a 100% employee-owned company with 60+ years of construction expertise.
  • Our in-house architects and designers ensure seamless project integration.
  • We guarantee transparent communication and no hidden costs.
  • Our skilled crews handle projects from site prep to finishing touches.
  • We maintain long-term client relationships through on-time, on-budget delivery.
What people say
On time and on budget Exceptional communication Skilled and professional teams Transformed our vision into reality Dedicated to client needs
Services
Commercial Construction
Keller delivers tailored commercial construction solutions for offices, healthcare facilities, and retail spaces. Our process integrates design and construction to ensure functionality, budget adherence, and timely completion. Clients benefit from dedicated project managers and skilled crews managing every phase.
Design-Build Services
Our design-build approach combines architectural expertise with construction management under one roof. This streamlined method reduces costs, accelerates timelines, and ensures cohesive project execution from concept to handover.
Agricultural Projects
Specializing in agricultural facilities, we create durable, functional spaces for dairy farms and processing plants. Our team understands industry-specific requirements, delivering structures that enhance operational efficiency and longevity.
Construction Management
Keller provides comprehensive construction management, coordinating subcontractors, timelines, and budgets. Our on-site supervision ensures quality control, safety compliance, and seamless execution for complex projects.
Interior Design
Our in-house interior designers collaborate with clients to create functional, aesthetically aligned spaces. From concept drawings to final details, we ensure interiors reflect brand identity and meet practical needs.
Questions
What industries does Keller specialize in?
Keller serves commercial, agricultural, aviation, healthcare, education, and industrial clients with tailored construction solutions.
Do you offer design-build services?
Yes, we integrate architectural design, interior planning, and construction management under one team for streamlined project delivery.
Are you licensed to work outside Wisconsin?
While based in Wisconsin, we complete projects across the Midwest and beyond, including Illinois and Michigan.
How do you handle project timelines?
Our teams use detailed scheduling and proactive supply chain management to meet deadlines, even during disruptions.
What sets Keller apart from competitors?
As a 100% employee-owned company, we combine decades of expertise with personal accountability and transparent communication.
Can you manage large-scale projects?
Yes, our 175+ skilled team members handle projects from 1,000 sq. ft. offices to 66,000 sq. ft. industrial facilities.
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