At Crestview Window Cleaning in Portland, OR, we help determine the number of windows you have so we can provide you with the best, most affordable service. This involves more than just counting windows - we take into account the style and size. We then establish how much your residential window cleaning project will cost. If you need a more definitive quote, we are happy to stop by and provide a bid in writing. Windows are manufactured with an extensive array of sizes and numerous configurations.