Quick Answer:
House washing in Oregon costs $250 to $600 for most homes in 2026, with the typical single-story home running $250–$400 and an average two-story home $400–$700. Priced per square foot, expect $0.15–$0.50 for pressure washing and up to $0.80 for soft washing. Larger or heavily soiled homes can reach $800–$1,200. Portland-metro pricing runs roughly 40% above the national average because of higher labor costs and Oregon’s heavy moss and algae growth.
If your siding has gone green, gray, or grimy after another wet Oregon winter, you’re probably wondering what it costs to get it clean, and whether the price you’re quoted is fair.
This guide breaks down real 2026 house washing prices in Oregon: by home size, by siding type, and by method. You’ll also see the difference between soft washing and pressure washing, what makes a quote go up or down, and how to avoid overpaying. Let’s get into it.
In This Blog
- Average House Washing Cost in Oregon (2026)
- House Washing Cost by Home Size
- Cost per Square Foot
- Soft Wash vs. Pressure Wash: What’s the Difference (and Cost)?
- 7 Factors That Change Your Price
- House Washing Prices by Oregon City
- What’s Usually Included in a House Wash
- Is House Washing Worth It?
- How to Save Money on House Washing
- Frequently Asked Questions
Average House Washing Cost in Oregon (2026)
The average cost to wash a house in Oregon is $250 to $600, with most homeowners paying around $400 for a standard wash. Nationally the average sits closer to $311, but Oregon, and the Portland metro especially, runs higher.
Why? Two reasons. First, labor and overhead in the Portland metro cost more than the national average. Second, Oregon’s climate is a moss and algae factory. Mild temperatures, heavy rain, and tree-shaded roofs and walls mean organic growth builds up faster here than almost anywhere in the country, and removing it takes more dwell time, more cleaning solution, and more care.
Here’s the at-a-glance range:
| Service | Typical Oregon Price (2026) |
|---|---|
| Single-story house wash | $250 – $400 |
| Two-story house wash | $400 – $700 |
| Large / 3-story or heavily soiled home | $700 – $1,200 |
| Most homeowners pay | ~$400 |
*Prices are 2026 industry estimates for the Portland metro and Columbia County area. Your actual price depends on your home’s size, height, siding, and condition, always get a written quote.*
House Washing Cost by Home Size
Square footage is the single biggest driver of price. The bigger the exterior surface, the more time, solution, and water the job takes. Here’s roughly what Oregon homeowners pay by home size:
| Home Size | Approx. Wall Area | Estimated Cost |
|---|---|---|
| Small (under 1,500 sq ft) | ~1,000–1,800 sq ft of wall | $250 – $400 |
| Average (1,500–2,500 sq ft) | ~1,800–2,800 sq ft of wall | $400 – $700 |
| Large (2,500–4,000 sq ft) | ~2,800–4,500 sq ft of wall | $700 – $1,100 |
| Very large / estate (4,000+ sq ft) | 4,500+ sq ft of wall | $1,100 – $1,500+ |
One thing worth knowing: smaller jobs cost more per square foot, not less. A pro still has to pay for fuel, insurance, and travel whether they clean 800 square feet or 3,000. So the per-foot rate drops as the job gets bigger.
House Washing Cost per Square Foot
If a contractor prices by the square foot, here’s the 2026 Oregon range:
| Method / Surface | Cost per Sq Ft |
|---|---|
| Pressure washing (siding, general) | $0.15 – $0.30 |
| Soft washing (siding, trim) | $0.20 – $0.80 |
| Concrete (driveways, walkways) | $0.15 – $0.40 |
| Decks & patios | $0.25 – $0.60 |
The per-square-foot model is the cleanest way to compare two quotes, but only if both contractors are measuring the same thing (wall area vs. home footage) and offering the same method. A $0.20/sq ft pressure rinse and a $0.50/sq ft soft wash that actually kills algae at the root are not the same service, even though both say “house washing.”
Soft Wash vs. Pressure Wash: What’s the Difference (and the Cost)?
This is the most important thing to understand before you book, and the most common way homeowners overpay or get their siding damaged.
Soft washing uses low pressure (under 500 PSI) combined with a biodegradable cleaning solution that breaks down dirt and kills mold, mildew, and algae at the root. It costs slightly more upfront but lasts longer because the growth doesn’t just get rinsed off, it gets killed. Soft washing is the right method for vinyl, wood, stucco, painted surfaces, and anything delicate.
Pressure washing uses high-pressure water with no chemicals. It’s excellent for hard surfaces like concrete driveways, walkways, and patios — but used on siding it can force water behind panels, strip paint, and gouge wood.
| Soft Wash | Pressure Wash | |
|---|---|---|
| Pressure | Low (<500 PSI) | High (1,300–3,000 PSI) |
| Best for | Siding, stucco, wood, roofs | Concrete, driveways, patios |
| Kills algae at root? | Yes | No (rinses only) |
| Results last | 1–2 years | A few months |
| Relative cost | Slightly higher | Slightly lower |
A reputable Oregon crew will use both, soft wash for your siding and trim, higher pressure for your concrete. That’s exactly how NJM approaches every house washing job and pressure washing project. If a contractor wants to blast your vinyl or cedar siding with a high-pressure wand, that’s a red flag.
7 Factors That Change Your House Washing Price
Two homes the same size can get very different quotes. Here’s why:
- Number of stories. Two-story homes cost 30–50% more than single-story because of ladder work, longer hose runs, and slower, safer progress at height. Three stories costs more again.
- Siding material. Vinyl is quick. Wood, stucco, and brick need gentler technique and more dwell time, which adds labor.
- Level of buildup. A home washed annually cleans fast. A home that’s been neglected for five years may need a pre-soak and a two-pass treatment, adding 30–45 minutes and cost.
- Accessibility. Tight landscaping, fences, slopes, and obstacles around the foundation slow the job down.
- Add-on surfaces. Adding the driveway, deck, fence, or gutters raises the total, but usually saves you money per service when bundled.
- Season. Spring and early summer are peak demand (March–November). Off-season jobs sometimes price lower.
- Your location. Portland-metro pricing runs about 40% above the national average; outlying Columbia County areas can be slightly lower.
House Washing Prices by Oregon City
Pricing shifts a little across the Portland metro and Columbia County. Here’s a rough guide for a standard residential house wash:
| Area | Typical House Wash Price |
|---|---|
| St. Helens | $250 – $550 |
| Scappoose / Warren / Deer Island | $250 – $550 |
| Beaverton | $300 – $650 |
| Hillsboro | $300 – $650 |
| Portland Metro | $265 – $601 (avg ~$433) |
NJM serves homeowners across St. Helens, Scappoose, Warren, Deer Island, Columbia City, Beaverton, Hillsboro, Portland Metro, and the surrounding communities. See the full list on our service areas page.
What’s Usually Included in a House Wash
A professional house wash in Oregon should include:
- A free on-site estimate with a written, no-surprise price
- Prep and protection of plants, furniture, and electrical outlets
- A biodegradable soft-wash treatment on siding and trim
- A gentle low-pressure rinse that won’t damage your home
- A final walkthrough so you can confirm the results
Be cautious of quotes that sound too cheap, they often mean a quick rinse with no cleaning solution, which looks fine for a month and then the green comes right back.
Is House Washing Worth It in Oregon?
Yes — and in Oregon it’s closer to essential than optional. Here’s the return:
- Protects your siding. Mold, mildew, and algae hold moisture against your home and degrade siding, paint, and trim over time. Removing them extends the life of your exterior.
- Boosts resale value. A clean exterior can lift sale price by 5–10% and is one of the cheapest curb-appeal wins before listing.
- Prevents bigger bills. Catching organic growth early is far cheaper than replacing rotted trim or repainting.
Pair house washing with roof cleaning and gutter cleaning and you’ve protected the three most weather-exposed parts of your home in one visit.
How to Save Money on House Washing
- Bundle services. Booking house washing + gutters + roof together typically saves 15–25% versus separate visits.
- Don’t wait. Annual cleaning is cheaper per visit than letting buildup get severe and needing a two-pass treatment.
- Ask about first-time and maintenance discounts. NJM offers 15% off for new house washing customers and discounted maintenance plans.
- Get a written quote, not a phone guess. It protects you from surprise add-ons.
Ready for a clean home? Get a free quote online or call (971) 328-2122 for a same-day estimate.
Frequently Asked Questions
How much does it cost to wash a house in Oregon?
House washing in Oregon costs $250 to $600 for most homes in 2026. Single-story homes run $250–$400 and two-story homes run $400–$700. Larger or heavily soiled homes can reach $800–$1,200.
How much does it cost to pressure wash a two-story house?
A two-story house costs about 30–50% more than a single-story home because of the added ladder work and time at height, typically $400–$700 in Oregon, and more for larger or neglected homes.
Is soft washing more expensive than pressure washing?
Soft washing costs slightly more upfront (around $0.20–$0.80 per square foot vs. $0.15–$0.30 for pressure washing) but the results last longer because it kills algae and mold at the root instead of just rinsing it off. For siding, it’s the safer and more economical choice over time.
How often should you wash your house in Oregon?
Most Oregon homes should be washed once a year. Homes that are heavily shaded or surrounded by Douglas fir, maple, or alder may benefit from cleaning every 6–12 months because of faster moss and algae growth.
Does house washing increase home value?
Yes. A clean exterior can increase a home’s sale price by roughly 5–10% and is one of the most cost-effective improvements before listing.
What’s the difference between house washing and pressure washing?
House washing refers to cleaning your home’s exterior walls and siding, which is best done with low-pressure soft washing. Pressure washing uses high-pressure water and is best for hard surfaces like driveways, walkways, and patios. A good crew uses both, matched to the surface.
Do I need to be home for a house wash?
No. As long as the crew can access the areas being cleaned and an outdoor water spigot, most jobs can be completed while you’re away, with before-and-after photos sent when it’s done.
📞 (971) 328-2122 · 📍 34734 Snow St, St Helens, OR 97051 · Get a Free Quote
