David Loseman
Partner
Armstrong Teasdale
St. Louis
For Dave Loseman, real estate construction is more than a career—it’s a passion. As chair of Armstrong Teasdale’s Construction and Design Practice, Loseman has built a distinguished reputation representing clients in high-profile construction projects across the United States and internationally.
From project conception to completion, Loseman’s expertise spans every phase of construction and design transactions. Whether working with owners, contractors, subcontractors, or design professionals, he manages contract negotiations with precision and care, ensuring that all parties are aligned and prepared for success.
As leader of the firm’s Real Estate, Development, and Construction Industry Team, Loseman also prioritizes mentorship, guiding associates as they navigate the complexities of construction law. His leadership has not only elevated his team but also fortified his reputation as a trusted advisor within the commercial real estate community.
“The most enjoyable part of the business is working with a team of highly competent professionals, for all parties, in bringing all contract documents to close on a major project,” Loseman said. “All participants share the sense of accomplishment.”
Loseman’s comprehensive understanding of construction and engineering agreements is a hallmark of his practice. He regularly employs industry-standard forms such as those by the American Institute of Architects and ConsensusDOCs, tailoring custom contracts as needed to address the unique demands of each project. His portfolio includes contracts for projects ranging from moderate budgets to those valued in the hundreds of millions of dollars.
Beyond drafting and negotiating contracts, Loseman creates day-to-day contract templates for clients, along with essential documents like change orders, environmental and safety guidelines, and purchase order terms. His attention to detail ensures that his clients are not only protected but also well-prepared to handle the complexities of modern construction.
Loseman is quick to credit his success to the talented professionals he’s worked alongside throughout his career. “I’ve been blessed to have been surrounded by great partners and other experts in the commercial real estate field,” he said. “I recognize that there is much I do not know with respect to real estate, and having resources available to handle issues beyond my expertise has been invaluable.”
His contributions to the field have not gone unnoticed. Loseman is an active member of The Missouri Bar’s Construction Law Committee, the Illinois State Bar Association, and the St. Louis Council of Construction Consumers. His accolades include being named in The Best Lawyers in America® in the Construction Law category every year since 2003 and recognition on Missouri Lawyers Media’s Construction Law Power List in 2023. He also holds the prestigious AV® Peer Review Rating from Martindale-Hubbell, reflecting the highest level of professional excellence.
When he’s not immersed in legal work, Loseman finds solace outdoors. An avid hiker, fisherman, and cyclist, he thrives on activities that connect him to nature. “I enjoy basically anything that gets me outdoors,” he shared. His love of building extends beyond contracts to hands-on projects, where he takes satisfaction in the tangible rewards of creating something from the ground up.
