Mold is not only ugly but its unhealthy as well and if its not treated and maintained can cause further damage. It can grow under the siding through the vent holes and begin to eat and rot away the wood framing underneath. Get your exterior cleaned annually. Its not worth the risk of paying much more in the end when you could have prevented it for a very reasonable cost by keeping it maintained.
PlanetGreen PowerWashing specializes in Eco-friendly residential exterior cleaning services including house and deck washing, deck sealing, fence cleaning and sealing, brick, concrete and driveway cleaning.