The typical cost to pressure wash a house is $0.15-$0.40 per square foot, with many standard single-family projects totaling about $250-$600. The final price depends on the cleanable exterior area, siding material, number of stories, stain severity, access, location, and whether the contractor uses pressure washing or soft washing.
Key Facts at a Glance
- House washing commonly costs $0.15-$0.40 per square foot, before unusual access or restoration work.
- A standard residential exterior cleaning often has a $200-$300 minimum charge, even for a small home.
- Soft washing is usually safer than high pressure for vinyl, stucco, painted wood, and roof-adjacent surfaces.
- A two-story house commonly costs 20%-50% more than a similar one-story house because of access and labor.
- Contractors may price by wall area, linear footage, or a flat project rate instead of the home’s interior floor area.
- Heavy algae, oxidation, rust, and neglected surfaces can add $50-$300 or more to a residential quote.
What Is the Typical Price to Pressure Wash a House?
Professional house washing typically costs $0.15-$0.40 per square foot, or approximately $250-$600 for a straightforward single-family home. Low-end pricing usually applies to accessible one-story vinyl or brick with light soil, while upper-range pricing reflects taller elevations, heavy organic growth, delicate siding, or expensive local labor.
The quoted rate usually includes labor, water, standard detergent, equipment, setup, rinsing, and basic plant protection. Window cleaning, gutter brightening, roof cleaning, oxidation removal, rust treatment, and deck washing are often separate services.
The phrase “per square foot” needs careful interpretation. A contractor may use the home’s interior living area as a quick estimating proxy, but the work itself covers exterior walls, trim, soffits, porches, and sometimes attached garages. Two 2,000-square-foot houses can therefore receive very different quotes if one is compact and one has multiple gables, balconies, and additions.
Typical prices by home size
| Home size | Typical project price | Typical work time | Common assumption |
|---|---|---|---|
| 1,000-1,500 sq. ft. | $150-$350 | 1.5-2.5 hours | One story, light soil |
| 1,500-2,000 sq. ft. | $225-$500 | 2.5-4 hours | Accessible siding and moderate soil |
| 2,000-3,000 sq. ft. | $300-$800 | 4-6 hours | Larger elevations or two stories |
| 3,000-4,000 sq. ft. | $450-$1,000 | 5-8 hours | Multiple elevations and higher labor |
| More than 4,000 sq. ft. | $700-$1,500+ | 1-2 days | Complex access or extensive buildup |
These figures are typical U.S. residential ranges, not a guaranteed national tariff. A contractor may charge less per square foot on a large, simple exterior and more on a small property that requires a long drive, extensive setup, or specialized treatment.
Which Square Footage Counts for House Washing?
The billed square footage is often an estimate of exterior cleaning scope, not a precise measurement of interior floor area. Contractors commonly start with the home’s living area, then adjust for wall height, footprint, porches, gables, garages, detached structures, and access.
A rough wall-area estimate uses this formula:
Exterior wall area = perimeter × average wall height
For example, a compact 2,000-square-foot home with a 180-foot perimeter and 18 feet of average wall height has roughly 3,240 square feet of wall surface before subtracting windows and doors. A contractor may still quote from the 2,000-square-foot living area because that method is faster, but the physical cleaning scope is closer to the wall-area calculation.
| Estimating method | Typical use | Pricing reliability | Main limitation |
|---|---|---|---|
| Interior living area | Fast phone estimate | Moderate | Misses wall height and additions |
| Exterior wall area | Detailed bid | High | Requires measuring elevations |
| Linear footage | Small local operators | Moderate | Does not capture stories well |
| Flat project price | Most residential quotes | High when scope is written | Hard to compare without inclusions |
| Hourly labor | Complex or partial work | Variable | Final cost depends on production speed |
Ask the contractor which measurement supports the quote. A $0.25 rate applied to 2,000 interior square feet produces $500, but the same rate applied to 3,200 square feet of exterior wall area produces $800.
What does a minimum charge cover?
A residential minimum charge commonly falls between $200 and $300. Mobilization, hoses, chemical preparation, equipment setup, protection of landscaping, cleanup, insurance, and travel make very small jobs unprofitable at a strict per-square-foot calculation.
A 900-square-foot cottage might mathematically cost only $135-$360 at published unit rates, yet receive a $250 quote because the contractor must perform nearly the same setup as a larger project. A written quote should identify the minimum charge rather than presenting an artificially low unit price.
Which Cleaning Method Fits the Siding?
Soft washing is generally the safer choice for vinyl, stucco, painted wood, cedar, and asphalt shingles, while controlled pressure washing is more appropriate for concrete, some brick, and hard masonry. The correct method depends on substrate condition, coating, stain type, and the operator’s distance and nozzle selection.
Pressure washing relies primarily on mechanical force. Soft washing relies on detergent and controlled rinsing, often at substantially lower pressure. Organic growth such as algae and mildew responds better to a suitable cleaning solution than to increasingly forceful water.
| Surface | Usually suitable method | Typical residential rate | Main risk |
|---|---|---|---|
| Vinyl siding | Soft wash, low-pressure rinse | $0.20-$0.40/sq. ft. | Water behind panels or oxidation streaks |
| Painted wood | Low-pressure soft wash | $0.30-$0.60/sq. ft. | Paint removal and fiber damage |
| Stucco | Soft wash with controlled rinse | $0.30-$0.60/sq. ft. | Cracking, forced water, surface erosion |
| Brick masonry | Low-to-moderate pressure | $0.20-$0.45/sq. ft. | Mortar erosion and spalling |
| Concrete foundation | Pressure washing | $0.15-$0.30/sq. ft. | Etching or visible wand marks |
| Asphalt shingles | Roof-specific soft wash | $0.30-$0.75/sq. ft. | Granule loss from pressure |
| Cedar shake | Low-pressure soft wash | $0.35-$0.70/sq. ft. | Splintering and moisture intrusion |
The term “soft wash” does not guarantee safe work. Chemical concentration, dwell time, runoff control, plant protection, and rinsing technique matter more than the label alone.
How much pressure is safe?
There is no universal PSI setting that is safe for every siding product. Vinyl may tolerate a low-pressure rinse when the spray is directed correctly, but painted wood, stucco, window seals, soffits, and aged siding can be damaged by the same equipment.
Professional house washing often uses a pressure washer capable of much higher output while delivering the final rinse at a low effective pressure. A wide fan pattern, adequate distance, and a downward spray angle reduce intrusion risk. High pressure is a tool capacity, not a recommended setting for every surface.
A practical rule is to remove biological soil with chemistry first and use only enough water pressure to rinse it away. Increasing PSI to compensate for poor detergent dwell time often creates damage without improving the result.
What Does Professional House Washing Include?
Professional house washing normally includes inspection, protection, detergent application, dwell time, low-pressure rinsing, and a final check. A complete process often takes 2-6 hours for a typical home, depending on size, stories, stain severity, and the number of exterior details.
Step 1: Inspect the exterior
The technician should identify loose siding, failed caulk, cracked stucco, damaged screens, oxidized vinyl, open vents, and defective window seals. Pre-existing defects should appear in the quote or inspection notes.
Step 2: Protect the property
Technicians typically close windows, cover sensitive fixtures, move furniture, disconnect vulnerable decorations, and pre-wet vegetation. Outdoor electrical outlets and lighting require particular care.
Step 3: Apply detergent
A suitable house-wash solution is applied from the lower section upward when appropriate to reduce uneven drying and streaking. The chemical selection should match algae, mildew, dirt, oxidation, or rust rather than treating every stain identically.
The Centers for Disease Control and Prevention states, “Never mix bleach with ammonia or any other cleaner.” That rule applies to homeowners and contractors because incompatible cleaners can release hazardous gases.
Step 4: Allow dwell time
A typical dwell period is 5-15 minutes, with the surface kept wet and the solution monitored. Direct sun, wind, temperature, and stain severity change the required time.
Step 5: Rinse from the top down
The operator should use a broad spray pattern and avoid forcing water upward beneath siding, into soffit vents, behind window trim, or under roof edges. Rinsing continues until detergent and loosened soil are removed.
Step 6: Rinse plants and inspect
Landscaping should receive a thorough pre-rinse and post-rinse, especially when cleaning solutions are used. The final inspection should check siding uniformity, windows, fixtures, doors, plants, and runoff paths.
What Changes the Pressure-Washing Quote?
Stories, siding, access, soil severity, and local labor markets create the largest price differences. A simple one-story vinyl home may fall near $0.20 per square foot, while a two-story stucco property with heavy organic growth can exceed $0.50 per square foot.
| Price factor | Typical adjustment | Example effect on a $400 base quote | Why it matters |
|---|---|---|---|
| Two stories | +20%-50% | $480-$600 | Ladders, poles, safety, slower production |
| Heavy algae or mildew | +10%-30% | $440-$520 | More chemical, dwell, and rinsing |
| Oxidation removal | +$100-$400 | $500-$800 | Requires separate restoration work |
| Rust treatment | +$50-$200 | $450-$600 | Specialty chemical and spot treatment |
| Dense landscaping | +5%-20% | $420-$480 | More protection and hand work |
| Detached garage or shed | +$50-$200 | $450-$600 | Additional setup and surface area |
| High-cost metro area | +15%-40% | $460-$560 | Higher wages, insurance, and overhead |
How do stories and access change price?
A two-story house commonly costs 20%-50% more than a comparable one-story house. Height changes the work sequence, equipment requirements, safety controls, hose routing, and time needed to reach upper elevations without forcing water behind the siding.
Limited driveway access, steep slopes, locked gates, fragile landscaping, and narrow side yards also increase labor. A home with a clear perimeter can be faster to wash than a smaller home surrounded by dense shrubs.
Do stains cost extra?
Black algae, mildew, bird residue, oxidation, rust, artillery fungus, and artillery stain do not respond equally to ordinary washing. Organic growth may require detergent and dwell time, while oxidation can require a separate chemical restoration process that is not included in a basic house wash.
A pressure washer cannot reliably remove every discoloration. High pressure may strip paint, expose substrate, or create a clean patch around a stain without solving the underlying chemical problem.
How Long Does the Work Take?
A typical house wash takes 1.5-2.5 hours for a small one-story home and 4-8 hours for a larger or more complex property. Preparation and cleanup can account for 30-90 minutes of that time, so a quote based only on spraying time is incomplete.
| Property condition | Typical crew size | Typical duration | Likely price range |
|---|---|---|---|
| 1,200 sq. ft., one story, light soil | 1-2 workers | 1.5-2.5 hours | $200-$350 |
| 1,800 sq. ft., one story, moderate soil | 2 workers | 2.5-4 hours | $300-$500 |
| 2,400 sq. ft., two stories, moderate soil | 2 workers | 4-6 hours | $450-$750 |
| 3,500 sq. ft., two stories, heavy growth | 2-3 workers | 6-10 hours | $700-$1,200 |
| Historic wood or detailed stucco | 2 workers | 5-10 hours | $600-$1,500+ |
Crew size does not automatically mean faster work. A second technician may reduce ladder movement and improve protection, but complex surfaces still require slower application and rinsing.
Is DIY Pressure Washing Worth It?
DIY house washing can cost $40-$80 for a basic one-day rental, plus $20-$75 for detergent, fittings, protective equipment, and transportation. DIY becomes less financially attractive when the property requires ladders, chemical handling, specialty stain treatment, or repairs after water intrusion.
A homeowner should first identify the siding manufacturer’s cleaning instructions. Use the widest practical spray pattern, test an inconspicuous area, keep the wand moving, and never direct water upward beneath siding or trim.
The machine’s maximum PSI is not a target setting. A lower-pressure rinse with the correct detergent can outperform a high-pressure blast on mildew while reducing damage risk.
DIY cost comparison
| DIY cost item | Typical amount | Typical price | Often overlooked |
|---|---|---|---|
| Electric pressure washer rental | 1 day | $40-$80 | Pickup and return time |
| House-wash detergent | 1-2 gallons | $15-$45 | Chemical compatibility |
| Garden hose and fittings | 1 set | $15-$50 | Low-flow water supply |
| Eye, hand, and foot protection | 1 kit | $20-$60 | Splash and slip hazards |
| Ladder or extension equipment | 1 rental | $25-$75 | Fall exposure |
| Total basic DIY setup | 1 project | $90-$310 | Damage is excluded |
DIY is most reasonable for low, accessible concrete or a small, durable masonry area. Hiring an insured professional is usually the better choice for stucco, painted wood, historic siding, steep terrain, upper stories, and roofs.
How Do You Compare Pressure-Washing Quotes?
Compare written scope, method, inclusions, insurance, and surface-specific precautions rather than choosing the lowest unit price. A fair quote states the total project price, areas included, cleaning method, stain exclusions, plant-protection procedure, and payment terms.
Ask these questions before approving work:
- Is the price based on interior floor area, exterior wall area, or a flat scope?
- Does the quote include the garage, porch, foundation, dormers, and rear elevations?
- Will the operator use pressure washing or soft washing on each surface?
- Are oxidation, rust, roof cleaning, gutters, and windows included?
- What happens if a window leaks or siding is discovered to be damaged?
- Is the contractor carrying current general liability insurance?
- How will plants, fish ponds, HVAC equipment, and outdoor outlets be protected?
- Are chemical runoff and local storm-drain rules addressed?
A quote of $0.15 per square foot may be fair for a simple, lightly soiled exterior. It may be incomplete if the contractor excludes setup, treatment, detached structures, or difficult elevations.
What Can Go Wrong During House Washing?
The most common failures are excessive pressure, upward spraying, chemical damage, incomplete rinsing, and treating oxidation as ordinary dirt. Each problem has a different remedy, and adding more pressure is often the wrong response.
Water enters the house
Stop immediately if water appears around a window, door, vent, or interior wall. Dry the area, inspect the seal and flashing, document the condition, and do not resume until the entry path is understood.
Vinyl looks chalky or streaked
White residue can indicate oxidation rather than leftover dirt. Further aggressive washing may remove more coating and create visible wand marks; oxidation removal requires a separate test and restoration process.
Plants become discolored
Chemical exposure can burn foliage, especially in hot weather or when plants are not pre-wet and rinsed. Flush affected vegetation with clean water promptly and document the protection steps if a contractor performed the work.
Mortar or paint is damaged
High pressure can erode soft mortar, remove failing paint, and drive water into porous materials. The correct response is to stop, photograph the damage, and obtain a masonry or painting assessment rather than repeatedly washing the area.
Stains remain after washing
Persistent rust, tannin, oxidation, and embedded mineral deposits often need specialty treatment. A clean-looking surface is not guaranteed when the stain has chemically altered the substrate.
How Often Should a House Be Cleaned?
Most homes benefit from exterior washing every 1-2 years, while humid, shaded, wooded, or coastal properties may need cleaning every 12 months. Dry climates with limited shade may go 2-3 years between services if algae and mildew remain absent.
Clean before painting, listing a property for sale, or repairing exterior surfaces. Washing shortly before painting removes soil that can interfere with adhesion, but the surface must dry fully and any failed coating must be prepared separately.
Annual inspection is more useful than following a rigid calendar. Look for green or black growth on north-facing walls, shaded foundations, soffits, and areas beneath leaking gutters.
The Bottom Line
For how much per sq ft to pressure wash a house, use $0.15-$0.40 per square foot as a starting range and expect roughly $250-$600 for a straightforward single-family project. Calculate the actual scope, then adjust for stories, siding, access, stains, local labor, and minimum charges.
Choose soft washing for most delicate or painted residential exteriors, and reserve stronger pressure for suitable hard surfaces operated by someone who understands the substrate. The fairest quote is not necessarily the lowest rate. It is the quote that clearly states the method, surfaces, protection, exclusions, and total price.
FAQ
Does pressure washing include the roof?
Roof cleaning is usually separate from house washing because asphalt shingles, tile, and metal roofs require different procedures. Contractors commonly use a roof-specific soft-wash method rather than high pressure, and typical roof-cleaning rates may range from $0.30-$0.75 per square foot depending on pitch, access, growth, and safety requirements.
Is power washing more expensive than pressure washing?
Power washing uses heated water, while pressure washing generally uses unheated water. Residential house exteriors rarely need heated water, so “power washing” does not automatically justify a higher price; the surface, stain type, access, and labor scope should determine the quote.
Can pressure washing remove mold permanently?
Pressure washing can remove visible mold and mildew from some hard surfaces, but water alone may not kill or prevent regrowth. A suitable detergent, adequate dwell time, moisture correction, improved drainage, and more sunlight provide better long-term results than pressure alone.
Should I pressure wash before selling my house?
Exterior washing can improve visible cleanliness before listing and can remove soil before painting or repairs. Schedule the work early enough for surfaces to dry, and ask the contractor to document pre-existing oxidation, cracked caulk, damaged siding, and window defects before cleaning.
Can a contractor charge by the hour instead of per square foot?
Yes. Hourly billing is common for partial washing, stain testing, historic surfaces, repairs, and difficult access. Typical residential labor may run about $50-$150 per worker-hour, but a flat written scope is easier to budget when the entire exterior needs cleaning.
