A professional house wash typically takes 1.5 to 4 hours from start to finish. For most single-story homes in the Greenville, Greer and Spartanburg area, the job runs about 1.5 to 2.5 hours. Two-story homes and properties with heavy algae or mildew buildup usually fall in the 3 to 4 hour range.
That covers the full visit: setup, landscaping protection, solution application, dwell time, rinsing and a final walkthrough. If you’re planning your day around the appointment, those numbers give you a realistic window.
Time Estimates by Size and Condition
Every house is different, but here’s what we consistently see on jobs throughout the Upstate:
| House Type | Condition | Estimated Time |
|---|---|---|
| Small single-story (under 1,500 sq ft) | Light to moderate buildup | 1 to 1.5 hours |
| Average single-story (1,500 to 2,500 sq ft) | Light to moderate buildup | 1.5 to 2.5 hours |
| Average two-story (2,000 to 3,000 sq ft) | Moderate buildup | 2.5 to 3.5 hours |
| Large two-story (3,000+ sq ft) | Moderate to heavy buildup | 3 to 4+ hours |
| Any size | Heavy algae, mildew or neglect | Add 30 to 60 minutes |
These times reflect a professional crew with commercial equipment. If you’re comparing quotes, ask whether the estimate includes the full process or just active spraying.
What About a 2,000 Square Foot House?
This is the most common question we hear. A typical 2,000 square foot single-story home in average condition takes roughly 2 hours for our crew. A two-story home of the same size takes closer to 2.5 to 3 hours because the upper walls need additional time to reach and treat properly.
If the home hasn’t been washed in several years, or if it sits on a shaded lot with heavy biological growth (extremely common in Taylors, parts of Greer and wooded neighborhoods around Simpsonville), add another 30 to 60 minutes.
What Actually Happens During the Visit
The total time makes more sense once you understand what goes into a professional house wash. Here’s the full process:
Setup and property prep (10 to 20 minutes). We connect to your water supply, stage equipment, close windows and move lightweight items away from the walls.
Landscaping protection (5 to 10 minutes). We wet down flower beds, shrubs and plantings near the house before applying any cleaning solution.
Treatment and application (20 to 45 minutes). We apply our soft wash solution section by section, bottom up, adjusting strength based on the siding material. High growth areas like north-facing walls get additional treatment.
Dwell time (10 to 20 minutes). This is the step most homeowners don’t expect. The cleaning solution needs time to kill algae, mold and mildew at the cellular level and break their bond with the surface. Rushing this step means the growth returns faster.
Rinsing (20 to 40 minutes). We rinse the entire exterior top down using high volume, low pressure water. Two-story homes take longer because of the additional surface area and care required at height.
Final inspection (10 to 15 minutes). We walk the property, check every side for missed spots and rinse landscaping a second time.
Why We Use Soft Washing Instead of High Pressure
Most homeowners search for “pressure washing” and that’s perfectly reasonable. It’s the term everyone knows. But when it comes to house siding, the two methods work very differently.
High pressure relies on force. That works on concrete driveways, but it can drive water behind vinyl seams, strip paint, crack fiber cement and etch brick. It also doesn’t kill the organisms on the surface. It just knocks them loose temporarily, so they grow back faster.
Soft washing relies on chemistry instead. We apply a cleaning solution at low pressure that kills algae, mold and mildew at the root, then rinse with high volume, low pressure water. The surface comes clean without risk of damage.
Does soft washing take longer? Sometimes by 15 to 20 minutes because of the dwell time step. But the results last significantly longer, and every house wash we perform is backed by our 1-Year Algae-Free Guarantee.
What Makes a Job Take Longer
Several things can push a job past the average time range:
Heavy biological growth. Homes that haven’t been cleaned in two or more years, or properties on heavily wooded lots, often have thick layers of algae and mildew. These need stronger solution concentration and longer dwell time.
Two or more stories. Upper story walls require more care and time. We work from extension poles and elevated spray positions rather than ladders wherever possible, which is safer but adds time compared to ground level work.
Complex architecture. Dormers, multiple rooflines, covered porches, bump outs and hard to reach corners all add time. A simple rectangular footprint washes faster than the same square footage with five gables and a wraparound porch.
Siding material. Painted wood and stucco require more careful application and lower rinse pressure than vinyl. Brick with heavy biological staining may need a second application on certain sections.
Dense landscaping. Extensive flower beds or mature shrubs against the foundation require additional protection time.
Why Upstate SC Homes Need More Attention
If you live anywhere in the Greenville to Spartanburg corridor, your house gets dirty faster than the national average. Humidity regularly runs above 60% during warmer months, giving algae and mold everything they need to establish on siding. Heavy tree cover across neighborhoods in Taylors, Mauldin, Travelers Rest and throughout Greenville County means many homes sit in partial shade, which is exactly where growth accelerates.
The annual spring pollen dump from pine and oak trees adds a nutrient layer that absorbs moisture and feeds the next wave of algae. And because Upstate winters stay mild (40s and 50s with regular rain), mold and mildew never fully go dormant.
Most Upstate homeowners should plan for annual cleaning at minimum. Properties with heavy shade may need attention every 8 to 10 months.
Professional vs. DIY: How Time Compares
A professional crew with commercial equipment finishes most house washes in 1.5 to 4 hours. If you’re doing it yourself with a residential unit from a home improvement store, budget 4 to 8 hours or more. Small electric machines run at much lower gallons per minute, so you cover less area per pass and spend more time going over the same spots.
Two-story homes add a real safety concern. The kickback from a spray wand while standing on a ladder is a genuine hazard that professionals avoid by working from the ground with extension poles and high reach spray systems. For a full pricing comparison, see our house washing cost guide.
How Add-On Services Affect Total Time
If you’re scheduling a house wash, it often makes sense to bundle other exterior cleaning on the same visit. Here’s how common add-ons affect the total appointment:
Driveway and concrete cleaning: adds 30 to 90 minutes depending on size and staining.
Gutter cleaning: adds 45 minutes to 1.5 hours for hand clearing debris and flushing downspouts.
Roof washing: adds 1 to 2.5 hours. This uses a different solution concentration with its own dwell and rinse cycle, backed by our separate 5-Year Streak-Free Guarantee.
Gutter brightening (tiger stripe removal): adds 20 to 45 minutes for the dark oxidation streaks that standard washing may not fully remove.
Bundling services saves time since setup and cleanup happen once instead of across multiple visits.
Do I Need to Be Home?
No. As long as we have access to an exterior water spigot and your windows are closed, we can complete the work while you’re away. We’ll send a notification when the job is finished.
If you prefer to be home for the walkthrough, let us know when you schedule and we’ll time it accordingly.
How Long Does the Exterior Take to Dry?
Most siding dries within 1 to 3 hours in typical Upstate weather. On warm, sunny days with a breeze, it’s closer to an hour. Overcast or humid days may take a bit longer.
You can use your patio, deck and outdoor areas as soon as we finish rinsing. There’s no chemical residue left on the surface after the rinse step.
Frequently Asked Questions
How long does it take to wash a 2,000 sq ft house? A professional crew typically finishes a 2,000 square foot single-story home in about 2 hours. A two-story home of the same size runs 2.5 to 3 hours because of additional height and surface area.
Does soft washing take longer than high pressure? It may take 15 to 20 minutes longer because of the dwell time step, where the cleaning solution sits on the surface and kills biological growth before rinsing. That extra time is what makes the results last longer.
Does heavy algae or mildew make the job take longer? Yes. Homes with significant biological growth need stronger solution concentration and longer dwell time. Expect 30 to 60 minutes of additional time compared to a home with light buildup.
What makes a job take longer than expected? Heavy growth from years without cleaning, two or more stories, complex architecture, dense landscaping and siding materials like painted wood or stucco that need more careful handling.
Does a house wash include the driveway, roof or gutters? No. Those are separate services that can be bundled on the same visit.
How long does a DIY job take compared to hiring a professional? Plan for at least double the time. A job that takes our crew 2 hours might take a homeowner 5 to 8 hours with residential equipment.
Can I use my outdoor areas right after the wash? Yes. Once we finish the final rinse, your patio, walkways, deck and outdoor spaces are ready to use. Siding typically dries within 1 to 3 hours depending on weather conditions.
How often should I have my house washed in the Upstate? Most homes benefit from annual cleaning. Properties with heavy tree cover, dense shade or north-facing walls with persistent growth may need attention every 8 to 10 months. Our 1-Year Algae-Free Guarantee means you’re covered regardless.
Ready to Schedule?
If you’re in Greenville, Greer, Spartanburg or anywhere across the Upstate and want to know exactly how long your house will take, request a free estimate or call us at 864-310-3916. We typically respond within 24 hours, and most quotes can be provided from photos or satellite measurements without an on-site visit.
