Prepare your property for pressure cleaning by moving loose items, protecting plants and electrical fixtures, closing windows and doors, identifying cracks, loose paint, and fragile finishes, and telling the contractor about stains, drainage, pets, and access limits before work starts. This preparation improves access, reduces water-intrusion risk, protects delicate materials, helps the contractor choose the right pressure or soft-wash method, and lowers the chance of runoff, debris, or...