Kitchen Mold Removal Cost (Under Sink / Cabinets)
Quick Answer
Kitchen mold removal costs $1,000 to $4,000 for under-sink and cabinet areas. If cabinets can be saved, costs are lower; replacement cabinets add significantly to the project. See our Mold Costs hub.
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Cost Breakdown by Scenario
| Scenario | Typical Cost Range | What Changes the Price |
|---|---|---|
| Minor (cabinet interior only) | $800–$1,500 | Clean and treat cabinets |
| Moderate (cabinet + wall) | $1,500–$3,000 | Cabinet repair, drywall replacement |
| Major (cabinet replacement) | $3,000–$6,000 | New cabinets required |
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Estimated Cost
This is an estimate only. Local labor rates and specific damage conditions will affect your actual cost. We recommend getting multiple professional assessments.
What Drives the Price
Understanding these key factors will help you estimate your costs more accurately and know what to expect when getting quotes.
1. Cabinet Material
Solid wood can often be cleaned; particle board usually must be replaced.
Example: Cleaning solid wood: $500. Replacing particle board cabinet: $1,500.
2. Wall Involvement
If mold spread to wall behind cabinet, additional work is needed.
Example: Cabinet only: $1,500. Plus wall repair: $2,800.
3. Plumbing Source
Fix the leak or mold will return.
Example: Plumbing repair: $150–$500 additional.
Why the Smallest Mold Job in the House Still Has a Cabinet-Sized Catch
Under-sink mold is usually the least expensive mold problem to remediate in square-foot terms, but the cabinet base itself is where a simple cleanup can turn into a bigger repair than the mold treatment.
Particleboard doesn't survive what plywood can
Most kitchen cabinet bases are built from particleboard or MDF, materials that swell, delaminate, and lose structural integrity permanently once soaked, unlike solid wood or marine plywood, which can sometimes dry out and be treated in place. If your under-sink leak has been dripping for more than a few weeks, expect the cabinet floor itself, not just the mold on top of it, to need replacement, and that carpentry cost is typically quoted separately from the actual mold remediation.
Why the plumbing fix has to come first, in writing
A remediator treating under-sink mold without a confirmed plumbing repair (a new supply line, a resealed drain trap, or a replaced garbage disposal gasket) is treating a symptom that will return within weeks. Reputable remediators will either coordinate with a plumber directly or require proof the leak source is fixed before they'll warranty their treatment. If a company skips that conversation entirely, ask why before you pay for work that has a good chance of needing a repeat visit.
Real-World Examples
Here's what actual homeowners paid in similar situations. Your costs may vary based on local rates and specific conditions.
Slow Leak Under Sink
Clean cabinet, treat mold, fix leak, minor drywall repair
Caught early, cabinet salvageable
Long-term Hidden Leak
Cabinet replacement, wall remediation, plumbing repair
Particle board cabinets destroyed, wall damaged
Insurance Coverage
Often Covered
- Mold from sudden plumbing failure
- Resulting damage to cabinets and walls
Commonly Denied
- Gradual leaks
- Maintenance neglect
- Cabinet replacement (may be limited)
Documentation Checklist
Document these items to strengthen your insurance claim:
- 1Photo leak source and mold
- 2Document when discovered
- 3Get plumber invoice
What to Expect: Timeline
Day 1
Fix plumbing, containment, removal
Day 2-3
Treatment, drying
Week 2
Cabinet repair/replacement, finish work
Related Mold Remediation Guides
Essential guides in this topic cluster:
Frequently Asked Questions
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Use our calculator and guides to understand typical costs before you start researching.