Construction that enhances communities.

We partner with business and community leaders to strengthen southern Wisconsin’s growth.

Our Projects
The businesses most important to communities
Our Team
Get to know the National Construction team
Our Services
Personalized and scaled to your needs
Is a Pre-Engineered Metal Building Right for Your Project?
This type of building is more versatile than you might expect and offers many benefits that make it worth considering.
Alpine Slicing & Cheese Conversion
An old building is transformed into a modern cheese conversion facility
TPC Wisconsin
Luxe remodel reflects club's upscale image
Normandy Apartments
Classic apartment building updated to provide modern living spaces
Heckmann Financial
Newly renovated space allows financial firm additional room to grow

Our name is National, but our focus is local. We are a commercial design-build general contractor in Madison, Wisconsin strengthening southern Wisconsin’s growth by partnering with local business and community leaders.

Our portfolio of work includes commercial remodeling, commercial renovation and new construction for the businesses and services most important to a city’s residents, like childcare, healthcare and government facilities, and housing, retail and hospitality. Our work has increased tourism revenue and the tax base, expanded childcare and healthcare options, improved rental housing, doubled manufacturing capacity, and revitalized historic downtown districts.

We can also lead your projects and facility planning through our owner’s representative and program management services.

Neil Johnson founded National Construction in 1990. He later partnered with JG Development, headquartered in southwestern Wisconsin and owned by Jeff Grundahl and Mary Grundahl, on some larger projects. In 2008, Neil sold the firm to JG Development and moved into a superintendent role – a position he held until his retirement in 2020.

We are one of four divisions of JG Development, now 100 percent employee owned. We offer several building design and construction options, whether your project is a small remodel or a multi-million dollar community improvement initiative.

We believe that collaboration from the very beginning produces the best outcomes. We partner with architects, offer cost-saving options, support financing, and set clear expectations for subcontractors.

No matter our role, our process will create a space that’s perfect for your business or community and helps you continue your record of success. Contact us today.