Business Details
36 Years
experience
Trusted Construction Solutions in Madison, WI
At JG Development, we are passionate about creating spaces that enhance how you live, work, and serve your community. Founded in 1990, our company has grown from a residential builder to a comprehensive construction solutions provider with five specialized divisions. Our employee-owned structure fosters a culture of accountability and excellence, ensuring every project benefits from the expertise of dedicated professionals. We pride ourselves on delivering quality craftsmanship through collaborative approaches, integrating real estate guidance and investor support to streamline your experience. With decades of experience in luxury homes, commercial structures, and nonprofit facilities, we combine operational flexibility with specialized knowledge to meet your unique needs.Our team of over 70 professionals leverages cross-divisional expertise, ensuring innovative solutions for complex projects. Recognized with local, regional, and national awards, we remain committed to building trust and long-term relationships. As a 100% employee-owned company, our success is tied to the satisfaction of both our clients and our team. We serve the greater Madison area, offering tailored services for residential, commercial, and institutional clients. Let us transform your vision into reality with the integrity and dedication that have defined our work for over three decades.
Services
Custom Home Building
Residential Remodeling
Commercial Construction
Church/Nonprofit Construction
Restaurant/Retail Construction
Real Estate Guidance
Investor Support
Design-Build Services
Project Management
Community Facility Development
Details
- Year established: 1990
Highlights and features
- We offer 35+ years of experience in residential and commercial construction.
- Our employee-owned structure ensures accountability and long-term commitment.
- Cross-divisional collaboration delivers innovative, integrated project solutions.
- We provide real estate guidance and investor support for streamlined development.
- Recognized with local, regional, and national awards for construction excellence.
What people say
Exceptional quality
Collaborative approach
Expert project management
Timely delivery
Creative solutions
Services
Custom Home Building
Design and construct timeless, personalized dream homes with attention to detail and craftsmanship. Our team collaborates closely with clients to create spaces that reflect individual styles and functional needs. Combining innovative design with proven construction methods ensures lasting value and satisfaction.
Commercial Construction
Expand or develop commercial spaces including offices, retail centers, and hospitality venues. We employ a guided team approach to meet business growth objectives while maintaining budget and timeline parameters. Our expertise spans multi-tenant buildings, light manufacturing facilities, and recreation spaces.
Residential Remodeling
Transform existing homes through full-scale renovations, additions, or single-space updates. Our design-build process integrates functionality and aesthetics to enhance living spaces. Specialized teams handle everything from kitchen upgrades to complete home transformations.
Church/Nonprofit Construction
Build or renovate facilities for religious and nonprofit organizations with sensitivity to mission-driven goals. We navigate committee processes and fundraising timelines to deliver spaces that support community service and worship needs.
Project Management
Coordinate all aspects of development from planning through completion. Our certified project managers ensure quality control, timeline adherence, and seamless communication between stakeholders. This service integrates with all divisions to maintain consistency and efficiency.
People
Jeff Grundahl
Founder & CEO
Founded JG Development in 1990 after starting as a welder/carpenter. Led company growth into commercial construction through strategic acquisitions while maintaining residential excellence. Championed employee ownership transition in 2018.
Mary Grundahl
COO
Joined JG Development in 2005, bringing operational expertise that supported company expansion. Played key role in integrating acquisitions and establishing new residential brands. Oversees day-to-day operations as Chief Operating Officer.
Mike Trapino
Operations Manager
Leads commercial operations and oversees project execution across divisions. Brings extensive construction management experience to ensure quality delivery. Currently manages team of 70+ professionals across five service areas.
Brescia Berg
Marketing Director
Directs marketing and communications strategy to promote JG Development's services and values. Focuses on showcasing company expertise through digital platforms and client success stories.
Susan Sowatzke
Controller
Manages financial operations and accounting systems for the employee-owned company. Ensures fiscal responsibility while supporting growth initiatives across all construction divisions.
Questions
What types of construction projects does JG Development handle?
We specialize in residential homes, commercial buildings, restaurants, breweries, retail spaces, and institutional projects for churches and nonprofits.
Are you employee-owned?
Yes, JG Development transitioned to 100% employee ownership through an ESOP in 2018, aligning our team's success with client satisfaction.
Do you serve areas outside Madison?
Our primary focus is the greater Madison area, where we maintain strong local knowledge and community connections.
How do your divisions work together?
Our five divisions collaborate across projects, sharing expertise in materials, design, and construction techniques to deliver comprehensive solutions.
What sets you apart from other contractors?
Combining decades of experience with operational flexibility, we offer integrated services including real estate guidance and investor support.
