Business Details
36 Years
experience
Trusted Home Builders in Manitowoc, WI
John Koss Builders has been a trusted name in residential construction since 1990, delivering quality craftsmanship across the Lakeshore area. Our founder, John Koss, personally oversees every project, ensuring open communication and meticulous attention to detail from planning through completion. With over 30 years of industry experience, we specialize in new home construction, additions, and remodeling projects that meet exacting standards. Our team of skilled carpenters and qualified subcontractors brings decades of combined expertise to every job site. We prioritize building strong relationships with clients, making the home construction process enjoyable and stress-free.Our commitment to quality materials and superior workmanship has earned us a reputation for excellence in Manitowoc County. From initial design consultations to final walkthroughs, we maintain transparency and accountability at every stage. Our track record of satisfied customers and repeat clients demonstrates our dedication to meeting and exceeding expectations. We take pride in transforming architectural concepts into beautiful, functional living spaces that stand the test of time. Backed by partnerships with trusted local suppliers and tradespeople, we deliver comprehensive solutions for all residential construction needs.
Services
New Homes
Additions
Remodeling
Finished Lower Levels
Garages
Windows
Roofing
Siding
Details
- Year established: 1990
Highlights and features
- We have over 30 years of experience in residential construction
- Our president personally oversees all project phases
- We maintain partnerships with qualified local subcontractors
- We guarantee quality materials and superior workmanship
- Our team includes carpenters with 17-25 years of service
What people say
Quality job
On time
Excellent work
Superior craftsmanship
Great communication
Services
New Homes
We specialize in constructing custom-designed single-family homes with personalized layouts and premium materials. Our process includes collaborative planning, precise execution, and final walkthroughs to ensure complete satisfaction. With over 30 years of experience, we transform architectural concepts into energy-efficient, durable living spaces that meet modern standards while maintaining timeless appeal.
Additions
Our team creates seamless home expansions that match existing structures while meeting current building codes. We handle everything from initial design consultations to final inspections, ensuring minimal disruption to daily life. With experienced carpenters and trusted subcontractors, we deliver functional additions that enhance property value and living space.
Remodeling
We provide comprehensive remodeling services for kitchens, bathrooms, and entire home interiors. Our approach combines modern design trends with practical functionality while preserving structural integrity. From minor updates to complete overhauls, we ensure quality craftsmanship and attention to detail throughout every renovation project.
People
John Koss
President
With over 30 years in residential construction, John personally oversees all projects, ensuring quality craftsmanship and client satisfaction. He maintains direct communication with homeowners throughout the building process.
Nancy Koss
Secretary, Treasurer
As office manager since 1990, Nancy handles financial operations and administrative coordination. She ensures smooth project scheduling and maintains client communication channels for efficient project execution.
Vince Cisler
Lead Carpenter
With 25 years of service, Vince leads carpentry teams in executing precise construction details. His expertise ensures structural integrity and quality finishes across all residential projects.
Brian Klavekose
Carpenter
A skilled carpenter with 24 years of experience, Brian contributes to framing, trim work, and finish carpentry. His craftsmanship ensures professional results in every construction phase.
Jason Ewen
Carpenter
Jason brings 17 years of carpentry experience to the team, specializing in structural components and exterior finishes that meet exacting quality standards.
Questions
What types of home construction services do you offer?
We specialize in new home construction, additions, remodeling projects, finished lower levels, and exterior improvements including windows, roofing, and siding.
How long have you been in business?
John Koss Builders has served Manitowoc County since 1990, providing quality residential construction services for over 30 years.
Do you handle both design and construction?
We collaborate with homeowners on design concepts and manage complete construction projects from foundation to final finishes.
What areas do you serve?
We primarily serve Manitowoc County and the surrounding Lakeshore area of Wisconsin.
Can you accommodate custom home designs?
Yes, we work with homeowners to create personalized home designs that meet specific needs and preferences while maintaining structural integrity.
How do you ensure project quality?
Our president personally oversees all projects, with experienced carpenters and qualified subcontractors maintaining strict quality control throughout construction.
