Why mold is common in Vancouver
Pearson Field, on the Columbia River in Vancouver, averages about 38 inches of precipitation a year under NOAA's 1991–2020 normals, and December is the wettest month at about 6 inches. July and August are nearly dry, but from October through March the rain is steady and the air stays cool and damp.
About 40% of Vancouver's homes were built before 1980, according to the Census Bureau, and much of the rest went up in the decades after, in subdivisions east of I-205 with crawl spaces and attic insulation that can trap moisture. Older homes near downtown and in Hough and Arnada have original windows and limited ventilation, where condensation on cold glass and exterior walls is common.
The EPA's advice, to dry wet materials within a day or two, takes a dehumidifier in a Vancouver winter.
Source: NOAA climate normals
Mold services in Vancouver
What mold work costs in Clark County
| Service | Typical range |
|---|---|
| Mold inspection, national range | $300–$1,000 |
| Lab sample, per sample (national) | $50–$350 |
| Typical remediation job (national) | $1,100–$3,400 |
These are national ranges from Angi and HomeGuide. Crawl space jobs in Clark County often include a new vapor barrier or vent repairs, quoted separately from the mold work. See the remediation cost guide.
Washington mold licensing: what to check
Washington does not license mold remediation. Before hiring in Vancouver, look the company up in L&I's "Verify a contractor" tool, and ask for its training, liability insurance, and a written scope. Companies from across the river must be registered in Washington to work here. See the Washington page.
Will insurance cover it?
A Vancouver homeowners policy is most useful when the mold follows a sudden event, such as a frozen pipe or a storm-damaged roof, usually up to a mold limit. Condensation and crawl space dampness through a wet winter are generally treated as maintenance and excluded. River flooding needs a flood policy. If an insurer pushes back, the Insurance Commissioner's office takes questions from Clark County homeowners. See does insurance cover mold.
Areas we connect you in
Downtown, Hough, Arnada, Uptown Village, Fruit Valley, Cascade Park, Fisher's Landing, Mill Plain, Fourth Plain, Felida area, and surrounding neighborhoods of Vancouver.