Professional window cleaning for storefronts, office buildings, retail centers, multifamily properties, and commercial facilities across the Bay Area. Interior and exterior, ground-level and multi-story, single visit and recurring contracts — streak-free results, every time.
Glass is the surface customers look through before deciding whether your business is worth entering, the surface employees look out of every day, and the surface that communicates building quality to every person who passes. Mineral deposits from hard Bay Area water, bird droppings, construction overspray, exhaust film, and accumulated environmental grime build up on commercial glass faster than most property managers realize — and the degradation is gradual enough that it's easy to stop noticing until a new tenant or visitor points it out.
Commercial window cleaning is a different discipline from residential. The scale is larger, the access challenges are greater, the scheduling has to work around tenants and business operations, and the stakes of a streak, smear, or missed pane in a client-facing lobby are higher. Willow Wash provides professional commercial window cleaning using the right tools for each building type — water-fed pure water poles for multi-story exteriors, traditional squeegee technique for interior and ground-floor work, and specialized hard water stain removal for glass that's been neglected long enough to develop mineral etching.
Single visit or recurring contract. Exterior only or full interior-exterior scope. We build the program around your property and your schedule.
Commercial window cleaning scope varies widely by building type and access requirements. We match method to the building.
Ground-level retail and commercial storefronts — the glass your customers look through before walking in. Interior and exterior panes, window frames, sills, and door glass cleaned and detailed. Tracks and channels cleared of debris. For restaurants and food service, interior grease film on glass adjacent to kitchen areas receives appropriate degreaser treatment.
Office buildings from two stories to mid-rise cleaned using water-fed pure water pole systems — which reach multiple floors from ground level without ladders or lifts, leaving zero detergent residue and zero streaks as the purified water evaporates. Higher floors requiring rope access or lift work are assessed and quoted separately based on access conditions at the specific property.
Building lobby windows, floor-to-ceiling entry glass walls, and curtain wall panel systems are client-facing, high-traffic surfaces where fingerprints, smudging, and environmental soiling are most noticeable. Interior and exterior cleaning with particular attention to glass at eye and hand level — the zones where contamination concentrates and where tenants and visitors notice it first.
Horizontal and angled skylights accumulate particulate, bird droppings, biological growth, and mineral deposits from rain — conditions that vertical glass never experiences. Atrium glass walls and overhead glazing in common areas require specialized access and careful technique to clean without directing runoff onto surfaces below. We assess access requirements per property before quoting.
New construction and renovation projects leave glass contaminated with paint overspray, caulk smear, stucco splatter, adhesive label residue, and construction dust that standard window cleaning cannot remove. Post-construction glass cleaning uses specialized scrapers, solvents, and technique to restore glass to a clear finish without scratching — and is timed to occur after all trades have completed work on or adjacent to the glass surfaces.
Bay Area water is hard — mineral-laden water from irrigation systems, exterior hose-downs, and HVAC condensate leaves white calcium and silica deposits on glass that standard window cleaning cannot remove. Hard water stain removal uses acid-based treatments and specialized glass polishing compounds to dissolve and remove mineral buildup without etching the glass surface. This service is quoted separately from standard cleaning based on the severity and coverage of the staining.
Window cleaning needs vary by building type, frequency, and access. We've worked every category below — and we build the program to match.
High-frequency cleaning for street-facing glass that customers see before entering. Weekly or bi-weekly is common for food service.
Multi-story exteriors via water-fed pole system plus interior lobby and common area glass on a recurring program.
Common area windows, lobby glass, and balcony sliding doors in apartment complexes and condominium buildings.
Clinics, medical office buildings, and healthcare campuses where clean glass supports patient environment standards.
Guest-facing glass throughout — lobby, conference rooms, restaurant windows, and exterior facade cleaning.
Multi-asset portfolios serviced under a single contract — consistent standards, one contact, consolidated invoicing.
Showroom glass, service drive windows, and exterior glazing for dealerships where glass clarity directly affects merchandise presentation.
Post-construction glass restoration removing overspray, adhesive labels, caulk smear, and construction debris from all glazing before handover.
Glass is the highest-visibility surface on most commercial buildings. The condition of your windows tells visitors, tenants, and customers what to expect before they step inside.
Dirty, streaked, or mineral-stained windows communicate that a building is poorly maintained — regardless of how well the interior presents. For retail, this affects whether customers enter. For office buildings, it affects how prospective tenants perceive the quality of the property during tours. For hospitality, it affects guest reviews. Glass condition is one of the first things noticed and one of the last things addressed — which creates an opportunity for property owners who maintain it consistently.
Research on workplace environments consistently identifies natural light as one of the highest-ranked factors in employee satisfaction and productivity — and dirty windows measurably reduce the amount of natural light entering a space. For office buildings and commercial interiors with significant glazing, clean windows aren't just an aesthetic consideration — they directly affect the quality of the work environment tenants are paying for. Mineral deposits and heavy soiling on exterior glass can reduce visible light transmission by a significant percentage over time.
Hard water mineral deposits left on glass long-term don't just stain — they begin to etch into the glass surface as silica bonds chemically with the silica in the glass itself. Once etching has occurred, standard cleaning cannot reverse it — glass restoration or replacement becomes the only option. Regular professional cleaning prevents mineral accumulation from reaching this threshold. For buildings with expensive architectural glass, curtain wall systems, or specialty coatings, recurring cleaning is a cost-effective alternative to eventual glass replacement.
Commercial window cleaning is systematic work — the right method for each surface type, the right sequence for each building, the right schedule for each tenant.
We walk the full property before quoting — building height, access points, glass types, frame materials, and any special conditions like hard water staining, post-construction contamination, or coated glass that requires different chemistry. The method is selected per building: water-fed pure water pole for multi-story exteriors, traditional squeegee for interior and ground-floor work, specialized solvents for post-construction or hard water stain jobs. No single method gets applied to every property regardless of conditions.
Exterior cleaning is typically performed during business hours since water-fed pole systems work from the ground without entering the building. Interior cleaning is scheduled to minimize disruption — before business hours for retail, during low-occupancy periods for office buildings, or section by section for active spaces. We coordinate with property management and provide advance notice to tenants when needed. The schedule is confirmed before work begins and we communicate any changes promptly.
Multi-story exterior glass is cleaned using water-fed pole systems fed by an on-truck pure water filtration unit — water is filtered to zero dissolved solids, so it leaves no mineral residue when it dries. Brushes agitate the glass surface to release contamination, and pure water rinse carries it away. No detergent, no squeegee required for exterior glass, and no streaks or water spots as the pure water dries. This is the standard for commercial exterior window cleaning above ground floor — not a premium upgrade.
Interior glass and ground-floor windows are cleaned using professional squeegee technique — solution application, scrubbing with a sleeve or applicator, and squeegee removal in a single controlled stroke. Frames are wiped, sills are detailed, and edges are cleared of any solution runoff. This is precision hand work that produces a cleaner result than spray-and-wipe and a cleaner interior result than exterior-only water-fed pole cleaning alone.
Glass with visible mineral staining from irrigation overspray, condensate, or hard water contact receives acid-based treatment and glass polishing compound as a separate step before standard cleaning. The severity of the staining determines the concentration and method — mild staining responds to dilute acid application; heavy staining with early-stage etching requires polishing compound and additional passes. We assess and communicate the expected outcome before treating stained glass.
Every job gets a final inspection pass — checking for streaks, missed edges, frame residue, and sill debris before we close out. On recurring contracts, any glass damage, seal failures, frame deterioration, or other conditions worth flagging are noted in the completion summary. Property managers find this useful both for maintenance planning and for tenant communication when conditions discovered during cleaning turn out to be pre-existing issues.
The commercial properties with consistently clean glass aren't calling a vendor when windows get noticeably dirty — they're on a program. The right frequency depends on building type, location, and how the windows are used. A restaurant storefront on a busy street picks up grime, fingerprints, and cooking film weekly. A mid-rise office building exterior in a suburban park may only need quarterly cleaning with monthly lobby glass service.
Recurring clients get locked-in pricing, priority scheduling, and a crew that knows every access point and frame condition on the property. After the first visit, each subsequent service is faster and produces better results — we're not relearning the building each time.
The right frequency for retail storefronts, restaurants, coffee shops, and high-foot-traffic businesses where street-level glass picks up contamination daily. Interior and exterior both surfaces included.
The standard for most office buildings, retail centers, and commercial properties. Exterior facade cleaned monthly via water-fed pole; lobby and interior glass included. Covers most Bay Area commercial properties well.
Lower-traffic office buildings, industrial facilities, and properties in low-pollution environments where quarterly exterior cleaning and semi-annual interior work produces a consistently maintained appearance.
Property management firms and portfolio owners — coordinated cleaning schedules across multiple Bay Area properties, same standards at every location, one point of contact, consolidated invoicing, pricing locked in for the contract term.
Professional commercial window cleaning is more than showing up with a squeegee — it requires the right equipment, the right technique, and the discipline to show up consistently.
Multi-story exterior glass is cleaned with an on-truck pure water filtration system — zero mineral residue, zero streaks, no detergent. This is the professional standard for commercial exterior window cleaning. We don't use tap water and squeegee above ground floor.
We don't leave until the glass is clean. If you notice a streak or missed pane after we're gone, call us and we return to address it. No arguments, no service charge. This is what professional window cleaning looks like.
Bay Area irrigation systems and hard water leave mineral deposits that standard window cleaning won't touch. We carry the equipment and chemistry to address hard water staining as a separate service — restoring glass to clear rather than just cleaning around the deposits.
Exterior work from ground level via water-fed pole causes zero interior disruption. Interior cleaning is scheduled before hours or in low-occupancy windows. We coordinate with property management and communicate with tenants when needed — no surprises, no complaints.
Certificate of Insurance naming your ownership entity or property management company as additional insured — same day on request. Service records and completion documentation available for property management reporting and tenant communication.
Willow Wash handles more than windows — pressure washing, building facade cleaning, parking lots, and storefront maintenance. Bundling window cleaning with other exterior services means one vendor, one schedule, one invoice, and coordinated service that doesn't leave your building looking half-maintained.
See what Bay Area business owners and property managers say about Willow Wash.
Free property walkthrough and estimate. We'll assess every glass surface, identify any hard water or post-construction conditions, and build a program around your property and your tenants.
It depends on the building type and location. Retail storefronts and restaurants on busy streets typically need weekly or bi-weekly exterior cleaning — foot traffic, vehicle exhaust, and daily handling soil glass quickly. Office buildings with significant glazing generally work well on monthly exterior and quarterly interior schedules. Low-traffic or suburban properties may only need quarterly full-building cleaning. We recommend frequency based on the property during the walkthrough — not a standard formula applied to every building.
A water-fed pole system is a telescoping carbon fiber or aluminum pole — extendable to five stories or more — connected to an on-truck pure water filtration unit that removes all dissolved minerals from the water. The brush head at the top scrubs the glass, and pure water rinse carries contamination away. When pure water dries, it leaves no mineral residue — which is what causes streaks and water spots from standard tap water cleaning. This is the professional standard for commercial exterior window cleaning above ground floor. We don't use tap water on multi-story glass.
Yes — for most hard water staining. Calcium and silica deposits from irrigation overspray, HVAC condensate, and hard water contact respond to acid-based treatment and glass polishing compounds. The outcome depends on how long the deposits have been present and whether etching has begun. Recent or mild staining responds very well. Long-term deposits that have started to chemically etch the glass surface may only be partially restorable — full restoration would require glass polishing equipment or replacement. We assess and communicate expected outcomes before starting treatment.
Yes. Interior window cleaning uses traditional professional squeegee technique — solution application, scrubbing with an applicator sleeve, and single-stroke squeegee removal. Frames are wiped, sills are detailed, and edges are cleared. Interior cleaning is typically scheduled before business hours or during low-occupancy windows to minimize disruption to tenants and customers. We coordinate the schedule with property management.
Yes. Post-construction glass cleaning is a specialized service that removes paint overspray, caulk smear, stucco splatter, adhesive label residue, and construction debris using scrapers, solvents, and technique matched to the contamination type. This is different from standard window cleaning — it requires more time, more care, and different tools. It's quoted separately from recurring maintenance cleaning. Timing matters: post-construction cleaning should happen after all trades have completed work adjacent to the glass to avoid re-contamination.
Exterior cleaning via water-fed pole is done entirely from the ground or building exterior — no interior access required, no disruption to tenants. Interior cleaning is scheduled before hours or in low-traffic windows, coordinated with property management. For large properties with multiple tenant spaces, we work section by section and provide advance notice. Our goal is that tenants notice clean windows — not that cleaning happened.
Yes — and it's often the most efficient approach. Willow Wash handles the full exterior scope for commercial properties: window cleaning, building facade pressure washing, storefront cleaning, parking lot maintenance, and dumpster pad service. Coordinating these under a single vendor and a single recurring schedule means better overall results, simpler management, and often better combined pricing than sourcing each service separately.
Serving storefronts, office buildings, retail centers, and commercial properties throughout the South Bay, East Bay, Peninsula, and Tri-Valley.
The Bay Area's dense commercial corridors, office parks, and mixed-use developments across San Jose, Fremont, the Peninsula, and the Tri-Valley are where Willow Wash operates. We're local, we know Bay Area hard water conditions, and every job is handled by our own crew — not subcontracted.
Free property walkthrough and estimate. Tell us about your building — number of stories, glass type, any hard water or post-construction conditions — and we'll build a program that fits.
(669) 254-7406