Over time, driveways and walkways build up layers of dirt, moss, algae, oil stains, and mildew—especially in the Pacific Northwest’s damp climate. These surfaces don’t just look bad—they become slippery and dangerous. A clean, well-maintained entryway gives the best first impression to guests or potential buyers and helps prevent accidents.

How do you know it’s time? If your concrete looks darker than usual, has moss growing on it, or feels slick when wet, it’s time to book a cleaning. Most homeowners in areas like Wilsonville, West Linn, and Lake Oswego benefit from pressure washing their driveways and walkways once or twice a year.

Your patio should be a clean, inviting space where you can relax or entertain—but over time, it can become stained, slippery, and unsightly due to moss, mildew, dirt, and leaf buildup. At Anderson Exterior Maintenance, we specialize in patio pressure washing that restores the beauty of your outdoor living areas and helps prevent long-term damage.

Whether your patio is made of concrete, pavers, stone, or wood, our professional pressure washing service removes built-up grime and revitalizes the surface. A clean patio not only looks better—it’s safer and lasts longer.

How do you know it’s time to clean your patio? If your patio feels slippery when wet, has green or black patches, or just looks dull and discolored, it’s due for a deep clean. Most homeowners in Wilsonville and surrounding areas benefit from patio cleaning at least once a year—especially after the rainy season or before summer gatherings.

Your home’s siding is one of the first things people notice—and one of the quickest to collect dirt, algae, mold, and mildew in Oregon’s wet, tree-filled environment. At Anderson Exterior Maintenance, we offer expert siding pressure washing that gently but effectively removes years of buildup and restores your home’s original color and shine.

We use soft wash techniques when needed to safely clean vinyl, wood, Hardie board, and other siding materials without causing damage. Our siding cleaning not only improves curb appeal but also helps prevent premature wear and costly repairs caused by organic growth.

When should you pressure wash your siding? If you see green, black, or brown streaks, faded colors, or cobwebs stuck to your siding, it’s time for a cleaning. Homes in areas like Wilsonville, Tualatin, and Lake Oswego typically need siding washed once every 1–2 years—especially on the north-facing side that stays damp longer.

Your deck is meant to be a space for relaxing, grilling, and enjoying the outdoors—but in Oregon’s damp climate, it doesn’t take long for dirt, moss, algae, and mildew to take over. At Anderson Exterior Maintenance, we specialize in deck pressure washing that safely cleans and restores wood and composite decks without causing damage. We use a combination of soft washing and controlled pressure to lift grime, remove slippery buildup, and bring your deck back to life. A freshly cleaned deck not only looks beautiful—it’s also safer for your family and guests. How do you know it’s time to clean your deck? If your deck boards feel slippery, have green or black spots, or appear gray and weathered, it’s time for a wash. In the Wilsonville area, most homeowners benefit from a professional deck cleaning at least once a year—especially before spring or summer.

At Anderson Exterior Maintenance, we proudly serve HOA communities with professional, reliable exterior cleaning services that keep shared spaces looking clean, safe, and well-maintained. From moss-covered sidewalks to grimy signage and stained retaining walls, our HOA pressure washing services help your neighborhood stay beautiful and inviting year-round.

We work closely with HOAs, property managers, and board members to schedule cleanings with minimal disruption and maximum results. Whether you manage a gated community, townhome complex, or a larger residential development, we’re equipped to handle the unique needs of neighborhood maintenance.

Common HOA surfaces we clean include:

• Sidewalks and pathways

• Entryway signage and monuments

• Clubhouse exteriors

• Mailbox pads

• Parking areas and curbs

• Retaining walls and common-area fencing

When should your HOA schedule a cleaning? If your shared spaces are starting to look dark, patchy, or slippery—or if you’re preparing for spring inspections or community events—it’s the perfect time to schedule a cleaning. Most HOAs benefit from quarterly or biannual service to keep up with Oregon’s fast-growing moss and algae.