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.

We are based in San Antonio TX, but we service all of Texas & beyond!

Sonni is a Veteran of the United States Air Force where she served seven years on active duty. We support all brothers and sisters in arms, law enforcement, and first responders!

Sonni Koster, MBA
Founder & Principal Designer

Sonni is a Veteran of the United States Air Force where she served seven years on active duty. We support all brothers and sisters in arms, law enforcement, and first responders!

Sonni Koster, MBA Founder & Principal Designer

Sonni Koster, MBA
Founder & Principal Designer