Pressure Washing in Oregon City, OR

Crews from our Portland / Tigard office pressure wash hard surfaces at homes and businesses in Oregon City. Estimates are free and given on site.

Call (503) 255-2532 for a free on-site estimate.

When the house is a designated historic property

The City of Oregon City’s Historic Review Process page is written for designated properties. Its list headed “Alterations that are typically denied are:” includes “Sandblasting pressure grit washing, or high-pressure water washing.” The same page says “Ordinary maintenance and minor repairs involving identical materials and designs do not require an application.” The City’s Historic Review Board Policies page says “The policies do not apply to regular maintenance or repair of existing structures.”

Neither page says whether routine washing of a house counts as ordinary maintenance. The Policies page applies to “All properties in the Canemah National Register Historic District, as the District boundaries existed on February 1, 2017,” and “All designated structures in the McLoughlin Conservation District,” along with structures individually designated on the National Register before February 1, 2017, and local landmarks outside the historic districts. For McLoughlin, the City’s district page puts it this way: “Only homes that are locally designated require a review of exterior alterations.”

Those are the City’s statements about designated properties. They endorse no company, ours included, and whether a particular house is designated is a question for the City.

What the design guidelines say about masonry on historic buildings

The City’s Design Guidelines for Alterations and Additions to Historic Buildings were adopted by resolution on August 28, 2012. Their masonry table recommends “Cleaning masonry only when necessary to halt deterioration or to remove graffiti” and, in the same line, “always with the gentlest method possible, such as low pressure water and soft natural bristle brushes.” The “Not Recommended” column lists “Sandblasting (including dry and wet grit and other abrasives) brick or stone surfaces,” and says “This method of cleaning erodes the surface of the material and accelerates deterioration.”

That guide covers historic buildings under the Board’s review, and it does not name a cleaning company.

Sidewalk upkeep and walkway algae, from two sources

In the copy of Oregon City’s sidewalk chapter, 12.04, that a City Planning packet reproduces as effective January 17, 2020, the abutting property owner “shall be responsible for maintaining said sidewalk and abutting curb, if any, in good repair.” That sentence says nothing about cleaning, moss or algae.

Separately, the moss entry in Oregon State University’s Solve Pest Problems guide, updated May 28, 2026, says algae grows on walls, sidewalks and patios where it is shady. It adds “Algae on walkways is a slipping hazard.” The same guide also says “Pressure-wash algae growing on patios.” That guidance is general to the Pacific Northwest. It is no Oregon City rule, and it names no company.

Oregon City in a few numbers

In the Census Bureau’s 2024 five-year estimates, Oregon City has 14,651 housing units. An estimated 9,669 are detached one-unit homes (66.0 percent), 1,068 are attached one-unit homes (7.3 percent), and 2,294 sit in buildings of five or more units (15.7 percent). Owners occupy 9,109 of the 13,944 occupied units (65.3 percent), and the median year built is 1992. Those are housing-unit counts. They say nothing about what a driveway, deck or patio is made of.

The City’s own history page says Oregon City was incorporated in 1844, “the first incorporated city west of the Rocky Mountains,” and describes “three terraces, which rise above the river.”

How we clean it

Coverage in Oregon City

The crews take on pressure washing across Oregon City, residential and commercial.

Oregon City pressure washing questions