Who is DW Hammer?

Working together for over 20 years, Principals David Langhamer and Aidan McGovern pride themselves on completing each and every project efficiently and effectively. While both Dave and Aidan have established  impeccable reputations in the Chicago construction marketplace, the DW Hammer Team has quickly garnered high praise of their own from each of their clients.
Whether it’s completing a highly complex core and shell renovation or delivering the smart office of the future, DW Hammer has earned the respect of top architects, engineers, real estate professionals and subcontractors for safely and successfully  completing every job. DW Hammer serves as a cornerstone of the Chicago construction industry, they have also proven themselves a formidable competitor in the national market. The DW Hammer Team looks forward to continuing to build long-standing relationships with each of our clients and delivering their most innovative projects.

David W Langhamer

Founder, DW Hammer LLC

Aidan Mc Govern

Director, DW Hammer LLC

Our Values


DW Hammer has built it's reputation of outstanding performance by surpassing client expectations. Our vast experience and hands-on project management, combined with our experienced leadership and network ensures that projects stay on-time and under-budget


We believe in the power of teamwork. We are recognized for being honest, modest, and hard-working, and for following through on commitments. We are proud of our reputation as a firm that clients can count on to do whatever it takes to get the job done.


The streamlined size of DW Hammer allows for innovation, flexibility, and for the ability to quickly adapt to a client’s needs. Our goal is to continuously improve our services based on today’s ever changing business climate.