Professional pressure washing a house typically costs $250-$800, with many standard siding-cleaning jobs landing near $311-$416 nationally. Contractors commonly charge $0.10-$0.50 per square foot, but stories, siding material, access, organic growth, cleaning method, and project minimums can move the final quote well outside that range.
Key facts at a glance
- A typical professional house wash costs $250-$800 for the main exterior siding.
- Standard pricing often falls between $0.10 and $0.50 per square foot of cleanable surface.
- A 1-story home commonly takes 1.5-3 hours; a 2-story home often takes 3-5 hours.
- Vinyl, stucco, painted wood, and roof shingles generally require soft washing or low-pressure cleaning, not aggressive high pressure.
- Driveways commonly add $100-$250, while roof soft washing often adds $450-$700.
- A quote is more useful when it states the method, surfaces included, chemical treatment, access requirements, and post-cleaning rinse.
What Does It Cost to Pressure Wash a House?
A professional exterior house wash costs about $0.10-$0.50 per square foot, or approximately $150-$750 for a smaller 1-story property and $400-$1,400 for a typical 2-story property. Those figures usually describe siding or exterior walls, not the roof, interior gutters, driveway, deck, or repairs.
Angi and HomeGuide publish broad national estimates because contractors price different scopes under the phrase “house washing.” One company may measure the home’s footprint, while another estimates siding area, labor hours, ladder work, chemical use, and equipment setup. A 2,000-square-foot floor plan therefore does not necessarily represent 2,000 square feet of washable wall surface.
How do contractors calculate the price?
Contractors usually combine a minimum service charge with surface area, labor, access, and risk. A practical estimate is:
Estimated price = service minimum + washable area × rate + access or treatment surcharges + add-ons
For example, a contractor charging $0.25 per square foot for 2,400 square feet of siding would calculate $600 before any roof, gutter, stain-treatment, or difficult-access charges. A small house can still cost $250 because setup, travel, insurance, chemical handling, and cleanup create a fixed labor cost.
| House-washing scope | Typical professional price | Typical duration | Main price driver |
|---|---|---|---|
| Small 1-story siding wash | $150-$350 | 1.5-2 hours | Minimum charge and access |
| Medium 1-story full exterior | $300-$750 | 2-3 hours | Wall area and siding condition |
| Medium 2-story siding wash | $400-$1,400 | 3-5 hours | Height, ladders, and hose reach |
| Large 3-story exterior | $700-$1,800+ | 5-8 hours | Lift access and complex elevations |
| House plus driveway and walkway | $450-$1,100 | 3-6 hours | Concrete size and stain treatment |
These are typical planning ranges, not a guaranteed local price. Labor markets in major metropolitan areas, coastal regions, and high-cost suburbs frequently exceed national averages, while rural quotes may be lower but include travel fees or limited scheduling availability.
Which Factors Change the House-Washing Price?
House-washing cost changes most sharply with cleanable surface area, building height, siding material, contamination, access, and the selected washing method. A low-risk vinyl wash on an accessible ranch home costs less than a chemically treated stucco exterior requiring ladders, plant protection, and extensive spot cleaning.
Square footage and exterior area
Contractors may quote by floor-plan square footage, exterior wall square footage, linear footage, or labor time. Ask which measurement the estimate uses, because a home with a 2,000-square-foot footprint and two full stories has substantially more wall area than a 2,000-square-foot ranch.
Typical pricing at $0.10-$0.50 per square foot produces these planning examples:
| Measured cleanable area | At $0.10 per sq. ft. | At $0.25 per sq. ft. | At $0.50 per sq. ft. |
|---|---|---|---|
| 1,000 sq. ft. | $100 | $250 | $500 |
| 2,000 sq. ft. | $200 | $500 | $1,000 |
| 3,000 sq. ft. | $300 | $750 | $1,500 |
| 4,000 sq. ft. | $400 | $1,000 | $2,000 |
The table explains why actual invoices may not match a simple online calculator. A $100 calculation can still become a $250 invoice when a company applies its minimum charge, while a large property may receive a lower per-square-foot rate because setup time spreads across more surface.
Number of stories and access
Height increases price because technicians need longer hoses, extension wands, ladders, stabilizers, lifts, additional setup time, and more careful runoff control. A second story also creates greater injury and property-damage exposure, even when the total wall area is modest.
Typical access adjustments include $50-$150 for difficult ladder work and substantially more when a lift or specialized access equipment is necessary. Contractors may also charge for steep terrain, locked gates, narrow side yards, detached structures, or water and power limitations.
Siding material and condition
Vinyl siding usually responds well to low-pressure detergent cleaning, while brick, stone, and some metal surfaces tolerate more mechanical rinsing. Stucco, painted wood, older mortar, roof shingles, oxidized finishes, and loose coatings need more conservative treatment.
| Surface | Usual method | Typical pressure approach | Common added concern |
|---|---|---|---|
| Vinyl siding | Soft wash | Under 500-1,000 PSI at the surface | Water intrusion behind laps |
| Painted wood | Low-pressure wash | Often under 1,000 PSI | Peeling paint and raised grain |
| Stucco | Soft wash | Low pressure with wide spray | Cracks and moisture entry |
| Brick and masonry | Controlled pressure wash | About 1,300-3,000 PSI when suitable | Mortar erosion and efflorescence |
| Asphalt shingles | Roof soft wash | Low pressure, never aggressive blasting | Granule loss and warranty concerns |
| Metal siding | Low-pressure or controlled wash | Material- and coating-dependent | Dents, oxidation, chalking |
Pressure limits vary by machine, nozzle, distance, surface condition, and operator technique. A machine’s maximum PSI is not a safe setting for every building material.
Dirt, mold, algae, and oxidation
Loose dust costs little to remove. Thick algae, black streaks, mildew, bird deposits, artillery fungus, grease, and embedded biological growth require more dwell time, repeated applications, agitation, or specialized treatment.
Oxidation is a separate problem. If a homeowner rubs faded siding and finds a chalky residue on the finger, the discoloration may be sun-damaged coating rather than removable dirt. More pressure will not restore oxidized siding and can create permanent streaks or surface damage.
Is Soft Washing Different From Pressure Washing?
Soft washing uses low mechanical pressure and a cleaning solution to kill and release organic growth, whereas conventional pressure washing relies more heavily on water force. For most house siding, roofs, stucco, and painted surfaces, the safer professional choice is often soft washing or a low-pressure detergent wash.
“Power washing” generally describes pressure washing with heated water. Terminology varies among contractors, so the quote should identify the actual pressure, temperature, detergent, and surface method rather than relying on the service name alone.
| Method | Water characteristic | Best applications | Typical house-washing use |
|---|---|---|---|
| Standard pressure washing | Cold water, approximately 1,300-3,000 PSI | Durable masonry, some concrete, metal | Limited siding and masonry work |
| Power washing | Heated water, often 140-200°F equipment settings | Grease, oil, gum, commercial concrete | Driveways and heavily stained hardscape |
| Soft washing | Low-pressure rinse plus detergent | Vinyl, stucco, wood, roofs, painted surfaces | Primary method for many homes |
| Hand or brush cleaning | Minimal machine pressure | Delicate trim, screens, localized deposits | Detail work and vulnerable areas |
PSI measures pressure, while GPM measures water flow. Higher GPM can rinse faster because it moves more water across the surface, but uncontrolled pressure can still damage siding, seals, screens, paint, and mortar.
A useful practitioner rule is to increase cleaning chemistry, dwell time, and water volume before increasing pressure. Force should be the last adjustment, not the first.
What Does a Professional House Wash Include?
A standard professional house wash includes site inspection, plant and electrical protection, detergent application, controlled rinsing, and a final property check. It may exclude roofs, interior gutters, windows, detached buildings, concrete, heavy stain restoration, and paint or siding repairs unless the written estimate lists them.
A careful process usually follows this sequence:
- Inspect the property. The technician identifies siding type, loose paint, failed caulk, open vents, damaged screens, oxidized coating, and drainage paths.
- Protect the site. Outdoor furniture moves away from walls; outlets and vulnerable fixtures receive protection; nearby plants are pre-rinsed with clean water.
- Pre-rinse loose debris. Spider webs, dust, and surface particles are removed without driving water upward behind siding.
- Apply detergent from the bottom upward. This reduces visible streaking on dry siding.
- Allow controlled dwell time. A typical dwell period is 5-10 minutes, adjusted for temperature, sunlight, and product instructions. The solution must not dry.
- Agitate localized deposits. A soft brush may address bird droppings, heavy corners, or deposits that chemistry alone does not release.
- Rinse from the top downward. High-volume, controlled rinsing flushes detergent and loosened contamination away from seams.
- Inspect and neutralize runoff risks. The crew checks windows, plants, fixtures, walkways, and remaining stains before leaving.
The chemical stage often does more cleaning than the pressure stage. Sodium hypochlorite solutions, surfactants, and specialty detergents require correct dilution, ventilation, runoff control, and material compatibility.
How Much Do Add-On Exterior Cleaning Services Cost?
Common add-ons cost $50-$700, depending on size, height, access, and stain severity. A driveway may add $100-$250, while roof soft washing commonly adds $450-$700 because roof access, plant protection, and runoff management increase labor.
| Additional service | Typical price | Typical duration | Usually included in house wash? |
|---|---|---|---|
| Driveway cleaning | $100-$250 | 1-2 hours | No |
| Sidewalk or walkway | $50-$150 | 30-90 minutes | No |
| Deck cleaning | $100-$200 | 1-2 hours | No |
| Exterior gutter cleaning | $50-$150 | 1-2 hours | Rarely |
| Roof soft washing | $450-$700 | 2-4 hours | No |
| Patio or pool deck | $100-$300 | 1-3 hours | No |
| Detached garage or shed | $75-$250 | 1-2 hours | No |
“Included gutters” can mean rinsing the outside faces only. Interior debris removal, downspout flushing, gutter whitening, and repairs are separate services in many estimates.
Roof cleaning deserves particular caution. High-pressure roof blasting can remove granules from asphalt shingles, force water beneath roofing materials, and create a warranty dispute. A quote should identify a low-pressure roof method and state whether gutter cleanup is included.
How Do Professional and DIY Costs Compare?
DIY house washing may cost $75-$150 for a rental, plus detergent, transport, protective equipment, and time. Hiring a professional typically costs more upfront, but the service transfers equipment, ladder, chemical, injury, and property-damage risks to an insured contractor.
| Consideration | Professional service | DIY rental or ownership |
|---|---|---|
| Initial cost | $250-$800 typical house wash | $75-$150 rental, $150+ purchase |
| Equipment output | Commercial gas units, often higher GPM | Consumer electric or compact gas unit |
| Labor time | About 1.5-5 hours | Often 6-12 hours across a weekend |
| Ladder exposure | Usually handled by trained crew | Homeowner assumes the fall risk |
| Damage liability | Contractor insurance may respond | Homeowner pays for repairs |
| Chemical handling | Crew supplies and controls products | Homeowner measures and stores products |
| Best-value surfaces | Siding, roofs, tall elevations | Flat concrete and low patios |
DIY is most reasonable for low-level concrete, pavers, and small patios when the operator can maintain stable footing and control the spray. Hiring a professional is usually the better financial decision for multi-story walls, roofs, stucco, painted wood, or houses with fragile windows and extensive landscaping.
A pressure washer can inject water into skin and cause severe injuries even when the cut appears small. The U.S. Consumer Product Safety Commission has repeatedly treated pressure washers as injury-producing equipment, and manufacturer manuals commonly warn operators never to point the spray at people, animals, electrical equipment, or the machine itself.
What Should You Check Before Accepting a Quote?
A reliable quote names the exact surfaces, cleaning method, price, exclusions, and property-protection steps. The lowest price is not comparable when one contractor includes only front-facing siding and another includes all elevations, spot treatment, plant protection, and a final rinse.
Ask each contractor these questions:
- Is the price based on floor area, wall area, hourly labor, or a flat minimum?
- Which surfaces are included: siding, trim, soffits, porch ceilings, foundation, and detached structures?
- Will the crew use soft washing, cold-water pressure washing, or hot-water power washing?
- What pressure will reach the siding or roof surface?
- Are detergents, stain treatments, and oxidation restoration included?
- Are windows, screens, outdoor outlets, plants, and light fixtures protected?
- Does the company carry general liability and workers’ compensation insurance?
- Are travel, ladder, lift, water, or access fees separate?
- Will the crew rinse chemical runoff away from landscaping and neighboring property?
- What happens if algae returns or a stain does not respond?
Compare at least three written estimates using the same scope. A quote that says “wash house, $400” leaves too much room for disagreement; a quote that lists elevations, materials, method, exclusions, and cleanup creates a meaningful comparison.
What Mistakes Damage Houses During Washing?
The most expensive washing mistakes involve excessive pressure, upward spraying beneath siding, chemical drying, and treating oxidation as ordinary dirt. These errors can cause gouged wood, broken window seals, trapped moisture, etched glass, dead landscaping, or permanent siding streaks.
Using a zero-degree nozzle
A red, 0-degree nozzle concentrates water into a narrow impact point. It can cut wood fibers, pierce screens, remove mortar, and etch concrete, so it has little place in routine residential siding work.
Spraying upward under siding
Water forced behind vinyl or wood siding can reach sheathing and insulation. Keep spray direction controlled and avoid pushing water into laps, vents, soffits, window trim, and door seals.
Washing windows with excessive pressure
Window seals, screens, glazing putty, and older panes can fail under concentrated spray. A professional may clean glass with a dedicated low-pressure rinse, but direct high-pressure blasting is inappropriate.
Letting detergent dry
Sun, wind, and warm siding can dry a cleaning solution in minutes. Work in manageable sections, pre-wet vegetation, monitor dwell time, and rinse immediately if the product begins to dry.
Treating oxidation as mold
Chalky residue on a finger indicates possible oxidation. Chemical restoration or repainting may be required; repeated pressure washing cannot replace deteriorated coating.
Why Is My House Still Dirty After Washing?
A house can look dirty after washing because the remaining discoloration is oxidation, embedded rust, efflorescence, failed paint, or biological staining that needs a second treatment. Increasing pressure without identifying the residue can worsen the defect while failing to change its appearance.
Use the residue to guide the diagnosis:
| Remaining appearance | Likely cause | Appropriate next action |
|---|---|---|
| Chalky film on fingertip | Siding oxidation | Restoration assessment or repainting |
| White powder on brick | Efflorescence | Dry brushing and masonry evaluation |
| Orange-brown marks | Rust or iron deposits | Compatible rust remover and spot test |
| Black roof streaks | Algae on shingles | Roof-safe soft-wash treatment |
| Green film in shade | Algae or mildew | Detergent treatment and controlled rinse |
| Dark marks below metal | Runoff or oxidation | Source correction and specialty cleaning |
A second application may be appropriate for organic growth, but not every discoloration is removable. Contractors should explain the expected result before charging for stronger treatment.
When Should You Wash a House?
Most homes benefit from exterior washing every 1-2 years, while shaded, humid, coastal, or tree-covered properties may need annual cleaning. Wash before exterior painting, listing a property for sale, or addressing visible algae, but schedule the work when temperatures and weather allow the detergent to remain wet.
Spring and fall are often practical because moderate temperatures reduce rapid chemical drying. Avoid freezing conditions, strong wind, thunderstorms, and extreme heat. Local water restrictions may also affect scheduling, especially in drought-prone areas.
Frequent washing is not automatically better. Annual low-pressure cleaning can be sensible in a humid wooded environment, but aggressive high-pressure cleaning every year can accelerate paint wear, mortar erosion, and surface damage.
The Bottom Line: How Much Is Pressure Washing a House?
How much is pressure washing a house? Budget $250-$800 for a typical professional siding wash, use $0.10-$0.50 per square foot as a planning rate, and expect higher pricing for multiple stories, difficult access, fragile materials, heavy growth, and specialty treatments. Add roughly $100-$250 for a driveway and $450-$700 for roof soft washing when those surfaces are included.
Request written quotes that identify the cleanable area, method, pressure approach, chemical treatment, protection procedures, time estimate, insurance, and exclusions. For low-level concrete, DIY can reduce the cash cost; for siding, roofs, stucco, painted wood, and elevated walls, an insured professional often provides the safer overall value.
Frequently Asked Questions
Is $300 expensive for pressure washing a house?
A $300 price is within the normal range for a small or accessible house wash, particularly when a contractor has a minimum service charge. The price is inexpensive for a 2-story home with heavy algae and expensive for a small front-only rinse. Confirm the included elevations, method, detergent, and cleanup before judging the quote.
Can pressure washing remove mold from house siding?
Pressure washing can remove surface mold and mildew, but soft washing is generally better for organic growth on siding. Detergent kills or loosens the growth while low-pressure rinsing limits damage and water intrusion. Persistent staining may involve oxidation or embedded discoloration rather than living mold.
Does house pressure washing include windows?
House washing usually does not include detailed window cleaning. A crew may rinse exterior glass during the siding process, but screens, frames, hard-water stains, interior glass, and seal-safe detailing often require a separate window-cleaning service. The estimate should state whether windows are included and how they will be treated.
How long does a house wash stay clean?
A professional house wash commonly looks clean for 1-2 years, although shaded and humid walls may regrow algae within 6-12 months. Tree cover, irrigation overspray, roof runoff, orientation, and local climate affect the interval. Correcting leaks and trimming vegetation can extend the result.
Should a house be pressure washed before painting?
A house should generally be cleaned before painting when dirt, mildew, chalking, or loose material is present. The surface must dry fully, and peeling paint, damaged wood, failed caulk, and oxidation need separate preparation. Excessive pressure can damage the substrate and create more repair work before painting.
How can I lower the cost of house washing?
You can lower the cost by bundling the house and driveway, clearing furniture and gates before the crew arrives, scheduling during a contractor’s slower season, and comparing identical written scopes. Do not reduce the price by omitting plant protection, insurance, or the correct low-pressure method for delicate surfaces.
