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J. H. Hassinger has experience in general contracting, design/build, and electrical and transmission pours with our power division. With self-performance capabilities of concrete, masonry, and carpentry, we reduce the risks that come with hiring subcontractors, while guaranteeing high-quality craftsmanship with greater efficiency and safety on the job.

Construction Services

Since 1985, J. H. Hassinger has been providing quality construction services to communities in the Greater Milwaukee Area. Our team specializes in general contracting, construction management, and self-performance.


J. H. Hassinger has been perfecting their craft in masonry, concrete, carpentry and excavation since beginning in 1985. With the self-performing capabilities at J. H. Hassinger, we can guarantee high-quality craftsmanship and punctuality.

GenCon Design/Build

With over 25 years of design experience, our in-house architect can bring our client’s ideas to life. This allows our clients to see their project through each stage from design to fruition while being more cost-effective and providing a more precise project schedule.

Power Division

The Power Division specializes in Greenfield and Brownfield substation projects. Having installed foundations in live substations up to 500kV and built yards with over 400 foundations, we pride ourselves on being one of the best substation contractors in the country.