Professional house washing for Bay Area homeowners using soft wash — the only method that cleans every exterior surface safely, thoroughly, and without damage. Single-story to multi-story, stucco to wood siding, we handle every surface and every height with the right equipment and proper safety protocols.
There are two ways to wash a house exterior — soft washing and pressure washing. One is the correct method. One causes damage. The difference comes down to how the cleaning is actually achieved.
Pressure washing relies on mechanical force — high PSI water blasting contaminants off the surface. On concrete driveways and pavers, that force is appropriate. On a house exterior, it's destructive. High pressure forces water behind siding, cracks stucco, strips paint, damages wood grain, blows out window seals, and drives moisture into wall cavities where it causes mold and rot.
Soft washing uses chemistry instead of force. A professional-grade biodegradable solution is applied at low pressure — under 500 PSI, comparable to a garden hose — and allowed to dwell on the surface. The solution kills algae, mold, mildew, and bacteria at the biological root level. The organisms die, the residue rinses away, and the result lasts 2–4 years because the source of the problem has been eliminated rather than temporarily blasted off.
Soft washing is not a gentler version of pressure washing. It is a fundamentally different method that produces superior results without putting your home at risk.
Three elements work together to clean your home exterior safely, completely, and with results that last.
Unlike pressure washing which relies on force, soft wash relies on time. The solution is applied and allowed to dwell on the surface for a calculated period, penetrating the biological growth and killing it at the cellular level. No mechanical scrubbing. No surface abrasion. The chemistry does the work so the equipment doesn't have to.
Our soft wash solution is professional-grade and biodegradable. Before application we pre-water all surrounding landscaping to dilute any contact with runoff. The solution is plant-safe, pet-safe, and breaks down naturally after application. Every job follows California stormwater compliance guidelines — no harmful runoff enters storm drains from any Willow Wash job.
After dwell time, the surface is rinsed at low pressure — under 500 PSI, comparable to a garden hose. This removes the solution, the dead organic material, and any remaining surface residue without mechanical force on the surface itself. The result is a clean exterior with zero risk of paint stripping, surface damage, or water infiltration behind siding or through caulk joints.
No two homes are identical. Before we touch anything, we walk the full exterior — assessing surface materials, paint condition, caulking integrity, any pre-existing damage, and the degree of biological growth. This assessment determines our solution concentration, dwell time, and rinse approach for every specific surface on your home. One-size-fits-all is how damage happens. We don't do that.
Surface-level cleaning only removes what's visible. The root systems of algae, mold, and mildew remain embedded in the surface and regrow within weeks. Soft wash solution penetrates to the biological source, kills the organism completely, and leaves a residual effect that inhibits regrowth. Results on most Bay Area homes last 2–4 years — significantly longer than any pressure washing approach.
Pre-watering all landscaping adjacent to the home is not optional — it's how we do every job. We also cover or protect any particularly sensitive plants or outdoor furniture before application begins. Post-rinse, we flush surrounding plant beds with fresh water to dilute any contact with runoff. Your garden, your lawn, and your plants are protected as a standard part of our process — not an add-on.
Every material gets the right solution concentration and approach for that specific surface. No guesswork, no shortcuts.
The most common exterior finish in the Bay Area. Soft wash is essential — high pressure cracks stucco, drives water behind the surface, and causes costly damage. Our solution removes algae and oxidation safely without touching the stucco's integrity.
Vinyl holds algae and mildew particularly well in Bay Area humidity. Soft wash penetrates the oxidation and biological growth that makes vinyl look faded and dirty, restoring its original color without warping or cracking the material with high pressure.
Wood is the most vulnerable exterior material to high-pressure damage — it raises grain, drives water into the wood fibers, and causes swelling. Our low-pressure soft wash removes mold and mildew without damaging the wood surface or stripping any existing finish or stain.
Fiber cement siding is durable but can harbor algae growth in the Bay Area's mild, damp climate. Soft wash removes biological growth from Hardie board without damaging the factory finish or the surface texture that gives it its appearance.
High pressure damages mortar joints — one of the most common and expensive mistakes made by amateur operators. Our soft wash approach cleans brick surfaces and removes efflorescence and biological growth without eroding the mortar that holds the structure together.
Pressure washing strips paint from wood and painted masonry. Soft wash is compatible with all painted exterior finishes — removing dirt, mold, and chalking without affecting the paint layer. For surfaces with peeling or failing paint, we document and flag the condition before we begin.
Often overlooked but critical — eaves and soffits accumulate cobwebs, insect nests, dirt, and oxidation that make the entire roofline look neglected. We clean every eave and soffit panel as part of the full house wash, not as a separate service.
Fascia boards run along the roofline and are constantly exposed to weather. They collect algae, streaking from gutters, and general buildup. We clean fascia as part of every full house wash — matched to the material, whether wood, aluminum, or vinyl.
Exposed concrete or masonry foundation walls collect soil staining, algae, and moisture marks at ground level. We treat the foundation exterior as part of the complete house wash — removing staining and biological growth that accumulates at the base of every home.
Garage doors are one of the most visible surfaces on the front of a home and one of the most neglected. We clean all garage door materials — steel, wood, aluminum, and composite — removing road grime, oxidation, and biological buildup as part of a complete house wash.
Wood, vinyl, aluminum, and wrought iron fencing surrounding your property is included in our full house wash when requested. We match the cleaning method and solution to the fence material and condition — soft wash for wood and vinyl, appropriate treatment for metal.
Every home is different. If there's an exterior surface on your property we haven't listed — concrete columns, outdoor structures, covered entryways, decorative masonry — we assess and clean it. No exclusions, no surprises. If it's on the exterior of your home, we handle it.
One of the most common questions we get from Bay Area homeowners is whether we can clean a two-story or three-story home. The answer is yes — always. Height is not a limitation. It's an equipment and safety planning consideration.
Willow Wash adheres to all applicable OSHA and California safety guidelines for working at height on every job. We use the right equipment for each specific height and access condition — extension wands, water-fed poles, and ladders rated and positioned to OSHA standards. No shortcuts, no improvised setups, no compromises on safety.
The soft wash method is particularly well-suited for multi-story homes because the low-pressure application reduces the physical risk involved with working at height compared to high-pressure systems that require closer proximity and more physical control. Chemistry does the work. Distance is not a problem.
Full exterior soft wash from ground level using extension wands. Complete surface coverage on every wall face, eave, soffit, fascia, and foundation. Most single-story homes completed in 2–3 hours.
Water-fed pole systems and extension wands reach full second-story height safely from the ground on most homes. Where ladders are required, OSHA-rated equipment and proper positioning protocols are followed on every setup.
Multi-story homes, steep rooflines, complex architectural features, and challenging access conditions are assessed during the initial site walkthrough. We plan the right equipment and approach before the job starts — not after we're already on-site.
OSHA and California safety guidelines are followed on every Willow Wash job regardless of property size or height. This isn't a selling point — it's the standard. Every crew member, every setup, every time.
A consistent, documented process that protects your property and delivers results every time.
We walk the full exterior, identify every surface material, assess existing damage, and determine solution concentration and approach before anything is applied.
All landscaping pre-wetted. Sensitive plants covered. Outdoor furniture and fixtures protected. Windows and doors checked for compromised seals before we start.
Biodegradable soft wash solution applied at low pressure across every exterior surface. Solution dwells for the correct time period to kill biological growth at the root.
Full rinse under 500 PSI removes the solution, dead organic material, and surface residue. Plant beds flushed with fresh water post-rinse as standard.
We inspect every surface with you. Anything that doesn't meet our standard gets addressed before we leave. Job isn't complete until you're satisfied.
The Bay Area's climate is uniquely hard on home exteriors. Coastal fog, marine layer moisture, damp winters, warm dry summers, wildfire ash, and heavy pollen create a perfect environment for algae, mold, and mildew to establish and spread on exterior surfaces faster than in drier climates.
Most Bay Area homeowners don't realize their home has a biological growth problem until it's clearly visible as black streaking, green patches, or a generally dull and dirty appearance. By the time it's visible, the growth has typically been establishing for months and has spread well beyond what the eye can see.
Annual or bi-annual soft wash house cleaning is the most cost-effective way to stay ahead of that buildup — protecting your paint, your siding, and your home's structural integrity before damage accumulates.
Persistent moisture from marine layer creates ideal algae and mold conditions on north and west-facing walls that never fully dry between fog events.
Bay Area rainy seasons drive soil, tannins, and roof runoff down exterior walls, leaving staining patterns that compound each year without regular cleaning.
Bay Area fire seasons deposit fine ash and smoke particulate on exterior surfaces. Ash residue is acidic and damages paint and siding finishes if left to accumulate over multiple seasons.
Heavy pollen deposits from Bay Area oak, cypress, and redwood trees coat exterior surfaces each spring, contributing to biological growth and surface discoloration when mixed with moisture.
We earn trust by doing the job right — right method, right equipment, and honest communication on every property we service.
We don't pressure wash house exteriors. Period. Every house washing job we do uses soft wash — the right method for every surface on your home.
Fully licensed and insured for all residential work in California. Full OSHA and California safety compliance on every job at every height.
Biodegradable detergents, landscape protection, and full California stormwater compliance on every job. Safe for your plants, your pets, and your neighbors.
Burch and Jayden are on-site for every house washing job. No subcontractors. No hand-offs. The people who answer the phone are the people cleaning your home.
House washing uses soft wash — a low-pressure application of biodegradable cleaning solution that kills mold, algae, and mildew at the biological root level. Pressure washing uses high-pressure water (1,500–4,000 PSI) to mechanically blast contaminants off surfaces. Pressure washing is the correct method for concrete, driveways, and pavers. It is the wrong method for house exteriors — it damages stucco, strips paint, forces water behind siding, and blows out window seals. At Willow Wash, we never pressure wash a house exterior. Every house washing job uses soft wash.
Most Bay Area homes benefit from house washing every 1–2 years. Homes in heavily shaded areas, near the coast, or with significant tree coverage may need annual service due to faster algae and mildew growth. Homes in drier, more exposed areas may be fine on a two-year cycle. We assess your specific conditions during the estimate and give you an honest recommendation — not the most frequent schedule that maximizes our revenue.
No. Soft wash solution and low-pressure application are compatible with all exterior paint and finish types — latex, oil-based, elastomeric, and specialty coatings. The solution is designed to clean organic growth from painted surfaces without affecting the paint layer itself. If there is pre-existing paint failure — peeling, cracking, or flaking — we document it during the assessment and discuss it with you before we begin. We don't clean over paint that is already failing and blame ourselves for the result.
Yes — absolutely. Height is an equipment and safety planning consideration, not a limitation. We use water-fed pole systems and extension wands that reach full second-story height from the ground on most homes, eliminating the need for ladders entirely on many jobs. Where ladders are required, we use OSHA-rated equipment and follow all applicable California safety guidelines for working at height. Multi-story homes are assessed during the initial site walkthrough so we plan the right equipment before the job starts.
Yes. We use biodegradable, plant-safe detergents on every job. Before we apply anything, we pre-water all adjacent landscaping — this dilutes any contact from runoff and is a non-negotiable part of our process. After rinsing, we flush surrounding plant beds with fresh water. Your pets, your garden, and your lawn are protected as standard. We also follow California stormwater compliance guidelines on every job — no harmful runoff enters storm drains.
A standard single-story home typically takes 2–3 hours from setup to final walkthrough. A two-story home runs 3–5 hours depending on square footage, surface material, and degree of buildup. Larger or more complex properties take longer — we give you a time estimate during the quote so you can plan accordingly. We don't rush jobs to fit more into a day. Your home gets the time it needs.
Not during the cleaning itself — we just need exterior access to the property. Gates, access codes, and any specific instructions are coordinated during scheduling. We do ask that you or someone be available for the final walkthrough so we can confirm every surface meets standard before we leave. If that's not possible, we document the completed work with photos and walk you through them directly.
Free in-person estimates for all Bay Area house washing jobs. Most properties quoted within 24 hours. Single-story, two-story, multi-story — we handle it all.
(669) 254-7406