Diamond Design understands the importance of having a well thought out interior layout plan when it comes to your Mercer Island, Washington home or industrial venture. Did you realize that having a specific style scheme may create a world of a difference when it comes to your environment? The right décor, colours and furniture will change a tiny, claustrophobic space into a stylish and comfy nook; or an unfriendly cold office into an avant-garde motivational atmosphere.