We proudly serve the people and communities of Southeastern South Dakota and Northeastern Nebraska. We believe that good design is not only beautiful and efficient, but it can also save you money. We want to collaborate with you, combining your unique perspective and great ideas with our creative problem solving and design expertise.

Sarah Mannes Homstad

Sarah Mannes Homstad is a Yankton, SD native who earned her Master of Architecture degree from Iowa State University in 2001. She holds a B.S. degree in Human and Organizational Development from Vanderbilt University and is registered to practice architecture in both South Dakota and Nebraska. She has served as project architect on buildings ranging in size from $500,000 private residences to $3 million office expansions.


Sarah returned to South Dakota in 2005. Prior to that, she worked for Studio Five Architects in Minneapolis. She led the design of a $1 million remodel of the University of Minnesota women's basketball team locker room suite in historic Williams Arena. She also served as the Owner's Representative assistant project manager during the design and construction of the $100 million Elmer L. Andersen Human Services Building for the State of Minnesota.


Sarah is a graduate of Yankton High School and was elected Governor of South Dakota Girls State in 1987. She was a South Dakota Miss Basketball finalist in 1988 and went on to play basketball at Vanderbilt University. In 2020, she was inducted into the South Dakota High School Basketball Hall of Fame. Today she is a Strong Towns and bicycling advocate, and a proud member of the AIA's "Communities by Design" and "Custom Residential Architects Network." She served for six years on the Yankton Area Arts Association Board of Directors. She is married to Gregg Homstad.

Glenn H. Mannes

Glenn Mannes practiced architecture in Yankton for over 40 years. He is now fully retired. A respected designer and problem solver, Glenn dedicated his professional life to designing high-quality buildings that helped enrich communities throughout the region.


Glenn is a Sioux Falls, SD native who attended the original Washington High School, which is now Washington Pavillion. The son of a carpenter, he earned his professional degree from Iowa State University in 1968 and worked in Sioux City, Ia. prior to moving his family to Yankton in 1970. He opened his own office in 1982, and continued to practice as a sole proprietor until 2012, when Mannes Architects, LLC was formed.


Glenn is a proud grandfather and an active member of Trinity Lutheran Church, where he sings in the adult choir. He enjoys the outdoors, birdwatching, golfing and fishing with his grandkids, and playing bridge at The Center. He is married to Bernita (Mercer) Mannes.