house washing is one of the most effective ways to protect your home's exterior and boost curb appeal. Along the Aurora and Arvada, intense UV exposure, dry wind, and seasonal moisture create the perfect environment for algae, mildew, and dirt to build up on your siding—especially on north-facing walls that stay shaded and damp.

Cottonwood seeds, tree pollen, and dust from dry spring conditions settle on siding throughout the season, while freeze-thaw cycles can push moisture into tiny cracks where organic growth takes hold. Pricing for professional house washing varies from home to home based on size, height, siding material, and the level of buildup present. This guide breaks down what you can expect to pay and why no two quotes are exactly alike.