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Bellevue Sunrooms & Room Additions

Transform your home into your very own private getaway with a sunroom from Sun Spaces. As Bellevue’s most trusted provider of room additions, we pride ourselves on building rooms where you can leave the world behind – without leaving your front door. To see what a difference our high-quality, cost-effective sunroom addition built with SIPs can make in your life, call us today to arrange your free in-home consultation.


We are a family owned and operated business, building over 4,000 projects in the last 32 years. We provide a personalized, unique service to those who place importance in their indoor living space by designing and installing high quality sunrooms, using only the finest materials and craftsmanship. Read More…


We treat every client as an individual. We will work with you personally, from the planning stage to project completion. Our staff is trained in design, building and servicing all of our product lines. We thrive to provide the ultimate in customer service. Read More…


If you plan to construct a building, home or add on living space with a well‑built room addition, be sure to build with SIPs. There are at least 10 reasons why choosing to build with Premier Building Systems structurally insulated wall panels, roofs and ceilings is far superior to conventional stick framing. Read More…