Top-Rated Pressure Washing & Exterior Cleaning in Sunnyvale, CA
Sunnyvale's mature street trees, many dating to its orchard era, drop heavy sap and leaf litter onto roofs, gutters and driveways — the buildup that stains concrete and blocks downspouts through the wet season.
Peninsula Exterior Care is a 5-star rated, fully insured professional exterior cleaning company based in Atherton, serving Sunnyvale and the surrounding Peninsula. We hold a 5.0 rating across 26 Google reviews, we are insured, and we match the cleaning method to each surface rather than running one pressure setting across an entire property.
Peninsula Exterior Care provides pressure washing, house washing and soft washing, roof cleaning, window cleaning, gutter cleaning, solar panel cleaning, and driveway and concrete cleaning throughout Sunnyvale. We are based in Atherton and match the method to the surface rather than running one setting across an entire property.
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- Local Peninsula company
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- Residential & commercial
Exterior cleaning services in Sunnyvale
Every surface outside a home wants a different method. Here is how we approach each one, and what it usually involves on a Sunnyvale property.
Pressure Washing in Sunnyvale
Power washing and pressure washing describe the same thing: water at force, used to strip dirt and organic film off durable surfaces. It works well on Sunnyvale concrete and hardscape. What it does badly is anything porous or fragile, which is why a full exterior job here is usually part pressure washing and part soft washing rather than one or the other.
House Washing & Soft Washing in Sunnyvale
House washing in Sunnyvale is nearly always a soft wash rather than a pressure wash. The dark streaking under eaves and the green tint on shaded elevations are living organic growth with root structure in the surface, and high pressure only removes the visible layer while risking driving water behind stucco or vinyl. We apply a detergent at low pressure, give it time to kill the growth at the root, then rinse. Stucco, vinyl siding, painted wood and fiber cement each get a different solution strength.
Roof Cleaning & Organic Growth Removal in Sunnyvale
Moss, algae and lichen hold moisture against roofing material, which accelerates wear and, in the case of moss, lifts shingle edges. On Sunnyvale roofs we clear debris from valleys and around penetrations first, since that is what feeds the growth, then apply a low-pressure roof-safe solution and rinse gently. Asphalt shingle, concrete and clay tile and low-slope membrane roofs each get a different approach.
Window Cleaning in Sunnyvale
Residential window cleaning in Sunnyvale usually runs on a twice-yearly cycle, more often where there is heavy tree cover, nearby construction or a busy road. Second and third-storey glass, skylights and high entryway windows are a normal part of the job rather than an add-on we skip.
Gutter Cleaning in Sunnyvale
Gutter cleaning in Sunnyvale is timing-sensitive because Bay Area rain arrives in a concentrated window. Everything that dropped through autumn is sitting in the gutter when the first serious storm hits, and that is when a blocked run sends water down the siding and into the foundation area. We clear debris by hand rather than blowing it into the landscaping, bag and remove it, then flush the downspouts to confirm they actually drain.
Solar Panel Cleaning in Sunnyvale
Panels convert the light that reaches the cell, so anything sitting on the glass reduces what gets through. A uniform film of dust is the most common issue on Sunnyvale arrays and the easiest to miss, precisely because it is even. Bird droppings are the more severe version, since an opaque patch can affect a string disproportionately depending on how the array is wired.
Driveway Cleaning in Sunnyvale
The driveway is usually the largest single surface a visitor sees at a Sunnyvale property, and it shows neglect faster than anything else. Deeply set oil often lightens substantially rather than disappearing completely, and we will say so when we quote rather than after the work is done.
Concrete & Sidewalk Cleaning in Sunnyvale
Concrete and sidewalk cleaning in Sunnyvale is mostly about organic growth rather than dirt. Flatwork under tree cover turns dark green or black because shade holds moisture in the porous surface and overhead debris feeds algae. It is also genuinely slippery when wet, which makes a shaded front walkway a safety issue rather than just an appearance one.
Patio & Deck Cleaning in Sunnyvale
Outdoor living space is the part of a Sunnyvale home people actually use and the part that greys fastest. A sound deck can look like it needs replacing when it really needs cleaning. We work at low pressure with the grain on wood, and we will tell you honestly if the timber is genuinely degraded rather than simply dirty.
Commercial Exterior Cleaning in Sunnyvale
A commercial entrance in Sunnyvale is the first thing a customer or tenant evaluates, usually without realising it. Gum on the walkway, grimy entry glass and a stained facade all read as nobody paying attention, and that lands before anyone gets through the door.
What we commonly see on Sunnyvale properties
The mature street trees that make Sunnyvale pleasant are also what keeps us busy here. Leaf and sap fall means gutters fill faster than in more open neighbourhoods, and the shade those trees cast keeps walkways and driveway edges damp enough to grow the black organic film that will not rinse off. Autumn gutter cleaning ahead of the rains is the single most requested job we do in Sunnyvale.
Common exterior cleaning problems in Sunnyvale
In Sunnyvale the recurring issues we are called about are organic: green or black film on shaded concrete, dark streaking on roofs, algae creeping up the damp side of a wall. These respond to a proper soft wash with dwell time and return slowly. Pressure alone removes the visible layer and they return fast. Not every property has all of these — but most have two or three.
- Black staining on shaded concrete. Organic film on walkways and driveway edges. It is also slippery when wet, which makes shaded flatwork a safety issue as well as an appearance one.
- Tree-related buildup. Sap, leaf litter, seed pods and needles feeding growth on roofs, in gutters and across hardscape.
- Oil and tyre staining on driveways. Oil soaks into porous concrete rather than sitting on it, so it needs a degreaser and dwell time, not just pressure.
- Spider webs, nesting and entry grime. Eaves, porch ceilings, light fixtures and entryways — the details people see from two feet away.
- Hard water spotting on glass. Irrigation overspray leaves mineral deposits on ground-floor windows that ordinary glass cleaner will not remove.
- Traffic film and general dulling. Airborne dust and pollen that builds through the dry season and flattens the colour of a whole elevation.
How we clean different exterior surfaces
Every material below behaves differently under water and detergent. Matching the two correctly is most of what separates a good result from an expensive one.
| Surface | Method we use |
|---|---|
| Stucco | Porous and absorbent. Soft wash only — pressure can drive water behind the surface and open hairline cracking. |
| Vinyl siding | Low-pressure soft wash, worked top-down. Panels overlap, and water forced behind them does not drain or dry well. |
| Painted & wood siding | The gentlest setting we use. Pressure furs the grain and lifts paint unevenly. |
| Fiber cement | Tolerates more than wood but still gets a soft wash rather than pressure. |
| Asphalt shingle roof | Low-pressure soft wash. Pressure strips the protective granules and typically voids the manufacturer warranty. |
| Concrete & clay tile roof | Low pressure, deliberate foot placement on the structural high points of the tile profile. |
| Concrete flatwork | Genuine pressure with a rotary surface cleaner for an even finish, plus pre-treatment on organic growth. |
| Pavers | Controlled pressure to protect joint sand, with fresh sand afterward where it is worth doing. |
| Wood & composite decking | Low pressure with the grain. Composite has a manufacturer pressure ceiling worth respecting. |
| Glass, screens & solar | No pressure. Soft brushes and filtered water so the glass dries without mineral spotting. |
Read the full explanation: pressure washing vs soft washing →
Recent work across the Peninsula
Real photographs from our own jobs — full frames, before and after, nothing cropped to make the angles line up.
Why Sunnyvale homeowners choose Peninsula Exterior Care
We are an established professional exterior cleaning company based in Atherton. We explain what method we are using on each surface before we start, we are straight about what will and will not fully come out, and we walk the property with you afterward.
Habid just finished soft washing outside of house and washing windows including outside porch and banisters. My house is a single story, 1915 CA craftsman's house. I hired him because he I had the option of a non pressurized wash. Because my house is old, I didn't want to use too much pressure. He is meticulous and provided a fair price for all the work he did. No damage at all to the stucco or wood from the washing. It turned out great! I see he does other soft and pressurized cleaning. I will most likely be hiring him again for my sidewalk and brick patios.
Made appointment for 9AM, my clock chimed followed by the doorbell. I expected them to arrive only with a bucket, sponge and squeegee, instead they had state of the art equipment mounted in their vans. The final rinse went through a step to eliminate any water spots and leave the windows sparkling clean. Professional, polite and efficient. A terrific find recommend them to anyone that has similar projects.
Exterior cleaning FAQs — Sunnyvale
Can you clean solar panels without damaging them?
Yes, with the right method. Panel glass scratches permanently, so nothing abrasive and no harsh chemicals go near it. We use soft brushes and filtered or deionised water, which also means the glass dries without leaving mineral spotting.
Do you clean second-storey homes?
Yes. Two and three-storey elevations, upper windows, skylights and roof work are normal parts of the job, and we bring the access equipment for it rather than skipping what is hard to reach.
Do you provide commercial pressure washing in Sunnyvale?
Yes — storefronts, offices, walkways, entryways, parking areas and building exteriors, for property managers, retail, restaurants and HOA common areas. Most commercial work is scheduled outside business hours.
Do you remove algae, moss and mildew?
That is the majority of what we do. All three are living organic growth, which is why we soft wash with a solution and dwell time rather than relying on pressure. Killing it at the root is the difference between results that last a year and results that last a month.
How soon can you get out to Sunnyvale?
Usually within a few days of booking. Autumn gutter season and spring are our busiest stretches, so book earlier in those windows if you need a specific week.
Do I need to be home during the work?
Not usually, as long as we have access to the areas being cleaned and an outdoor water spigot. Plenty of jobs happen while the homeowner is at work.
Is soft washing safe for my landscaping?
Yes. Plants near the work area are pre-wet before we start and rinsed thoroughly afterward, and anything particularly sensitive gets covered. Tell us about it when we walk the property.
How much does pressure washing cost in Sunnyvale?
It depends on the property rather than the city — square footage, number of storeys, the surfaces involved, how long it has been since the last clean, and access. We do not price by city, and we do not quote a range sight-unseen. Send a few photos or book a walkthrough and you will get a real number, usually the same day.
Is pressure washing safe for stucco?
High pressure is not. Stucco is porous, and pressure can force water into and behind the surface and open up hairline cracking. Stucco gets a soft wash: low pressure plus a detergent that breaks down algae and mildew chemically, with dwell time doing the work.
Areas we serve near Sunnyvale
Why homeowners choose us
What makes Peninsula Exterior Care a top-rated exterior cleaning company in Sunnyvale?
We hold a 5.0 rating across 26 Google reviews, we are a professional exterior cleaning company based in Atherton, and we are fully insured. Every quote is walked with you before work starts, and we match the cleaning method to each surface — soft washing for siding, stucco and roofs, controlled pressure only where a surface can safely take it.
Are you a professional and insured exterior cleaning company?
Yes. Peninsula Exterior Care is insured and we are happy to provide current documentation before work begins. We are an established local company serving the Peninsula, and we bring the same crew and the same standards to every property we work on.
How do I choose a reliable pressure washing company in Sunnyvale?
Look for three things: verifiable reviews rather than claims, a company that explains which method it will use on each surface, and honesty about what will not fully come out. Old oil in concrete, long-set hard water etching and efflorescence all improve rather than disappear — any company promising complete removal is overpromising.
Do you serve Sunnyvale regularly, or only occasionally?
We work in Sunnyvale regularly. We are based in Atherton and cover the Peninsula, South Bay and San Francisco, so this is an area we are in rather than travel to occasionally.
Free quote for your Sunnyvale property
Send a few details — or a couple of photos — and we'll come back with a price, usually the same day.