Our Design and Build Process: Simplifying the Remodeling Process in King County. Whether you live in Seattle, Bellevue, Medina, Clyde Hill or any other part of King County, Washington, experience the ease of working with a single point of contact for every phase of your remodel process. With IDA Design and Build there is no need to deal with multiple contractors or attempt to juggle sourcing pros and materials yourself. Instead, relax and let us guide you through each decision and every step along the way. As a true design and build contractor, IDA Design and Build is the only resource you need from the beginning to end of your home’s remodel project. Whether it’s a single room or a whole home remodel, we are here to simplify and streamline your home’s makeover.