Pressure washing the exterior of a standard fifteen-hundred-square-foot single-story house typically takes between two to four hours of active work for an experienced DIYer or professional. If the home is a two-story structure, features complex architectural details, has heavily stained or mildewed siding, or requires manual scrubbing alongside detergent application, the project duration can easily extend to a full working day or require six to eight hours of careful labor.
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