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Koster Kollective Design Group specializes in residential design from full renovations to new construction. The details matter. Layering is a calculated process, and we have the expertise, eye, & creativity to bring your design to life. ​
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Sonni is a Veteran of the United States Air Force where she served seven years on active duty. We supports all brothers and sisters in arms!
Sonni Koster, MBA
Founder & Principal Designer
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