The short version
Most Vancouver-area mold jobs land somewhere between $1,500 and $6,000. Small, contained problems caught early come in under that. Whole-home projects and jobs with structural involvement go well above it. The single biggest driver of the number is not the mold — it is what has to happen to stop the water, and how hard the affected space is to physically work in.
Typical Clark County ranges by job type
| Job | Typical range |
|---|---|
| Small contained area, hard surfaces (bathroom corner, closet wall) | $500–1,500 |
| Single room, porous materials removed and rebuilt | $1,500–4,500 |
| Crawl space mold remediation (cleaning, treatment, debris removal) | $1,500–5,000 |
| Crawl space vapor barrier install | $1,500–4,000 |
| Full crawl space encapsulation with dehumidifier | $3,000–9,000+ |
| Attic remediation with ventilation correction and re-insulation | $1,500–8,000 |
| Lower-level / daylight basement remediation | $2,000–7,000 |
| Emergency water mitigation and structural drying | $2,000–8,000 |
| Whole-home multi-zone project | $10,000–30,000+ |
| Inspection with lab air sampling | $300–900 |
Contractors typically build the remediation portion from a per-square-foot rate that reflects how hard the affected material is to deal with: roughly $8–18 per square foot for surface growth on sealed, non-porous surfaces; $15–30 for porous materials like drywall, carpet, and insulation that get removed and replaced; and $30–75 where framing, subfloor, or roof sheathing is involved. Our cost calculator uses those same bands.
What actually moves the price in Vancouver
- Crawl space clearance. The most underestimated cost factor in this county. An 18-inch crawl can take roughly twice the labor hours of a 36-inch one for identical work, because technicians move slowly and drag every piece of equipment on their backs. Two identical houses on the same street can differ by thousands for this reason alone.
- The moisture correction. Removal without a source fix is half a job. Extending downspouts might be $200. Re-grading is $1,000–3,000. A crawl space sump is $1,500–4,000. An interior perimeter drain system runs five figures. This line varies more than any other.
- Season. Structural drying takes longer in February than in August because there is no dry outdoor air to work with, which means more equipment days on the invoice.
- What is behind the surface. The scope is written from moisture readings, not from the stain. Growth almost always extends past what is visible, and a quote written without meter readings is a guess.
- Containment requirements. Black or heavily contaminated jobs carry roughly a 15–25 percent premium for heavier containment, PPE, and disposal.
- Access and occupancy. Second-floor work, occupied rentals, and after-hours commercial scheduling all add cost.
How to read a quote
A quote you can actually evaluate has these things in it. If any are missing, ask.
- The moisture source, named. Not "moisture intrusion" — the actual mechanism, and how it was determined.
- Square footage and material list. What is coming out, and where the cut lines are.
- Containment and air filtration. Specified, not implied.
- Drying plan with targets. Dry to a measured moisture content, with daily readings — not "three days."
- The source correction, priced separately. So you can see it and compare it.
- Testing. Whether clearance verification is included, and who performs it.
- Rebuild. Whether putting drywall, insulation, and flooring back is in the number or not. This is the most common apples-to-oranges problem between two bids.
Get two or three quotes on anything over about $3,000. Wide spreads on Vancouver jobs usually mean the contractors scoped different work, not that one is gouging — one included rebuild and encapsulation, another quoted remediation only. Compare the scopes before you compare the prices. And verify every bidder's registration, bond, and insurance through Washington's Labor & Industries contractor lookup: there is no mold-specific license in this state, so that registration is the baseline credential.
Where insurance fits
Standard Washington homeowners policies generally cover water damage that is sudden and accidental — a burst supply line, a failed water heater — and generally exclude gradual seepage, long-term leaks, poor maintenance, and surface flooding. Mold coverage, where it exists, is usually a sublimit somewhere in the $5,000–10,000 range and applies only when the mold results from a covered water loss. Flooding from a river, creek, or heavy surface runoff needs separate flood insurance entirely.
Practically, that means the classic Clark County crawl space problem — years of ground moisture and a torn vapor barrier — is almost never covered, because there was no sudden event. A pipe that burst last Tuesday probably is. See the Washington mold insurance article for the detail. We are not insurance advisors; read your declarations page and call your carrier.
Where you can genuinely save money
Catch it early — the difference between a $900 job and a $9,000 job is usually eighteen months. Fix the cheap water problems yourself: downspout extensions, gutter cleaning, and grading are homeowner-scale and enormously effective. Buy a $15 hygrometer and keep the house under 50 percent relative humidity in winter. Run the bath fan twenty minutes after every shower. Do not spend money on air testing when you can already see the mold and know where the water came from. And do not spend money sealing, painting, or fogging over a problem whose source is still active — that is the one expense that reliably buys nothing.
A note on the cheapest quote
Because Washington has no mold-specific license, the barrier to entry in this business is a truck and a website. After a heavy wet season, Clark County reliably sees a wave of low bids from operators who will spray an antimicrobial, run a fogger, and leave. Those jobs sometimes come in at a third of a legitimate quote, and they are not cheaper — they are a deposit on doing the work twice, because nothing was contained, nothing was removed, and the water source is still running.
The tell is what the quote does not say: no moisture readings, no named source, no containment, no drying targets, no scope. A legitimate low bid exists — a small contained job genuinely can be a few hundred dollars — but it will still describe what is being done. Verify the contractor's registration, bond, and insurance through Labor & Industries before you hand over anything, and be wary of any pressure to sign on the first visit.