# Exterior soft wash cost in Washington

Exterior soft wash in Washington runs between $0.086 and $0.268 per square foot of exterior wall, most likely $0.161.

Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 2, 2026. Method propdata-estimator-v6.

## Rates by service

**Exterior soft wash rates in Washington, per square foot of exterior wall**

| Service | Low | Most likely | High |
| --- | --- | --- | --- |
| Facade wash (drone) | $0.086 | $0.161 | $0.268 |
| Facade wash with mold or growth treatment | $0.128 | $0.235 | $0.407 |
| Facade wash, conventional access | $0.161 | $0.289 | $0.482 |

Grade C: modelled from the Texas calibration and scaled by the state factor of 1.07. [What the grades mean](https://skypsi.com/estimates/methodology/confidence-grades/).

## What moves the price

- Moderate: adds 10%
- High: adds 25%
- Extreme or first clean: adds 40%
- Minimum job value: $5,000
- Boom lift, up to 8 floors: $2,000 a week
- Boom lift, 9 to 12 floors: $3,500 a week
- Boom lift, 13 floors and up: $4,500 a week
- Lift fuel: $75 a day
- [Access and permit costs](https://skypsi.com/estimates/methodology/add-ons/)

## Methods

- [Drone](https://skypsi.com/estimates/exterior-soft-wash/drone/wa/): buildings from 45 feet to 250 feet tall
- [Boom lift](https://skypsi.com/estimates/exterior-soft-wash/lift/wa/): any height
- [Rope access](https://skypsi.com/estimates/exterior-soft-wash/rope-bmu/wa/): work above what a pole reaches

## Questions

### What does mold or algae treatment add by drone?

A drone facade wash with mold or growth treatment runs between $0.128 and $0.407 per square foot of exterior wall, most likely $0.235.

### When does a boom lift or rope access fit better than a drone?

Conventional access suits buildings under 45 feet, which sit below the drone range. A conventional facade wash runs between $0.161 and $0.482 per square foot of exterior wall, most likely $0.289.

### What changes the price of exterior soft wash in Washington?

Difficulty adds 10% for moderate access or soiling, 25% for high, and 40% for an extreme building or a first clean.

### What does a boom lift add?

A boom lift for a building up to 8 floors adds $2,000 a week.

### Is there a minimum job value?

The minimum job value is $5,000. A smaller job is raised to it once, on the proposal.

### How does Washington compare with the Texas baseline?

Washington applies a factor of 1.07 to the Texas baseline band.

## About these estimates

SkyPSI sets the exterior cleaning estimate for commercial buildings. Exterior soft wash is a service. Drone, boom lift and rope access are methods.

## Related

- [Exterior soft wash in the United States](https://skypsi.com/estimates/exterior-soft-wash/)
- [Exterior soft wash in West Virginia](https://skypsi.com/estimates/exterior-soft-wash/wv/)
- [Exterior soft wash in Wisconsin](https://skypsi.com/estimates/exterior-soft-wash/wi/)
- [Exterior soft wash in Wyoming](https://skypsi.com/estimates/exterior-soft-wash/wy/)
- [Window cleaning in Washington](https://skypsi.com/estimates/window-cleaning/wa/)
- [How a SkyEstimate is built](https://skypsi.com/estimates/methodology/how-a-skyestimate-is-built/)
- [Rates for every service](https://skypsi.com/estimates/methodology/per-square-foot-bands/)
- [Regional price factors](https://skypsi.com/estimates/methodology/regional-price-factors/)

[Request a Quote](https://skypsi.com/request-a-quote)

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Sources: SkyPSI estimator.

Page: https://skypsi.com/estimates/exterior-soft-wash/wa/
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