Mold is the repair most homeowners dread. Not because it's complicated - it's actually pretty straightforward once you know what you're doing. The dread comes from uncertainty. Is it dangerous? Will insurance cover it? Am I getting ripped off on this quote?
Let me clear some things up. I've been remediating mold in Mid-Michigan homes for over a decade. Here's what it actually costs and what you need to know.
Quick Cost Reference
| Situation | Typical Cost | Insurance? |
|---|
| ----------- | -------------- | ------------ |
|---|
| Small area (under 10 sq ft) | $500 - $1,500 | Usually no |
|---|
| Moderate (10-100 sq ft) | $1,500 - $4,000 | If from covered water event |
|---|
| Large (100+ sq ft) | $4,000 - $8,000 | If from covered water event |
|---|
| HVAC contamination | $6,000 - $12,000 | If from covered water event |
|---|
| Crawl space | $2,000 - $6,000 | Rarely |
|---|
| Attic | $2,000 - $8,000 | Sometimes |
|---|
The insurance question: Mold coverage depends entirely on WHY the mold grew. Mold from a burst pipe? Covered. Mold from humidity or a leak you ignored? Not covered. Document the water source - it matters.
Important: These are estimates. Your actual cost depends on your specific situation. Free inspections help you know exactly what you're dealing with.
What Determines the Price
Size Matters, But Not How You Think
A 50 square foot mold problem doesn't cost 5x more than a 10 square foot problem. There's a base cost for setting up containment, running air scrubbers, and doing the work properly. That's $500-$1,000 whether we're treating 10 square feet or 50.
The price scales with size, but not linearly:
- Under 10 sq ft: $500-$1,500 (setup costs dominate)
- 10-50 sq ft: $1,500-$3,000
- 50-100 sq ft: $2,500-$4,500
- 100+ sq ft: $4,000+ (now we're adding crew time)
Location Changes Everything
Mold on bathroom tile? Easy access, hard surface, straightforward removal. Mold inside a wall cavity? Now we're cutting drywall, treating framing, and rebuilding.
Easy locations: Bathroom tile, exposed basement walls, visible surfaces. Base pricing.
Harder locations: Behind drywall (+$500-2,000), in HVAC systems (+$1,000-4,000), crawl spaces (+$500-2,000), attics (+$1,000-3,000).
The difficulty isn't the mold itself. It's accessing it, containing it, and verifying it's gone.
The Source Problem
Here's where some companies make their money - and where you can get burned.
Mold needs moisture. If we kill the mold but don't fix the moisture source, it comes back. Every time.
Some outfits will remediate your mold, collect their check, and wave goodbye. Three months later you've got mold again. They'll happily come back for another round of billing.
We don't work that way. Mold remediation includes identifying the moisture source. Sometimes it's obvious (leak from upstairs bathroom). Sometimes it takes some detective work (condensation from poor insulation). Either way, we'll tell you what needs fixing - even if it's not something we do.
Real Examples from Lansing Area Jobs
Bathroom Mold in Okemos
Classic scenario - mold behind the shower surround. Failed caulk let water into the wall cavity for months.
- 25 square feet of visible mold
- Extended behind tiles into wall
- Containment, removal, treatment, air scrubbing
- Cost: $1,800
- Insurance: None (maintenance issue)
The homeowner had a contractor redo the shower properly afterward. Total investment around $3,500 including our work.
Basement Mold After Flooding in East Lansing
Previous water damage wasn't dried properly. Homeowner thought it was fine because it "looked dry." Six months later, musty smell and visible mold on basement walls.
- 150 square feet affected
- 4 feet up the drywall all around
- Full containment, drywall removal, treatment, air scrubbing, clearance testing
- Cost: $4,200
- Insurance: Covered (mold resulted from documented water damage event)
- Homeowner paid: $1,000 deductible
If they'd called us right after the flooding, proper drying would've cost maybe $2,500 and prevented the mold entirely. Lesson learned.
Attic Mold in Holt
Bathroom exhaust fan vented into the attic instead of outside. Years of warm, moist air hitting cold roof sheathing. Classic Michigan problem.
- 400 square feet of roof decking affected
- Required attic remediation protocol
- Treatment, HEPA vacuum, encapsulation, clearance testing
- Cost: $5,500
- Ventilation correction (separate contractor): $800
- Insurance: None (construction defect)
Expensive fix, but necessary. That much mold was affecting the family's health - the kids had "allergies" that mysteriously cleared up after remediation.
The "Black Mold" Question
Everyone asks about black mold. Here's the truth: color doesn't determine danger, and "black mold" removal doesn't cost more than any other mold removal.
All mold needs to come out. The process is the same whether it's black, green, white, or orange. Some molds produce more mycotoxins than others, but you can't tell which by looking at them. We treat all mold seriously.
If someone's quoting you triple because they said "toxic black mold" - get a second opinion.
Can You DIY It?
For small areas on hard surfaces - maybe. Mold on bathroom tile you can see? A proper cleaning with the right products might work. Wear an N95 mask and gloves.
Don't DIY if:
- It's on drywall, wood, carpet, or insulation (porous materials)
- It's larger than about 10 square feet
- It's in HVAC systems
- It came from sewage or flooding
- Anyone in the house has mold sensitivity or respiratory issues
- It keeps coming back
The risk with DIY isn't that you can't kill mold. It's that disturbing it without proper containment spreads spores throughout your house. I've seen people turn a $2,000 bathroom problem into a $10,000 whole-house problem.
Avoiding Mold Remediation Scams
Some red flags I've seen:
Scare tactics: "This is deadly black mold - you need to evacuate immediately." Calm down. Get a proper assessment.
No inspection before quoting: Anyone giving you a price over the phone without seeing the mold is guessing. Or lying.
No clearance testing: How do you know it worked? We do post-remediation air quality testing. If a company doesn't offer this, ask why.
Spray and pray: Some guys just spray mold with chemical and call it done. The mold's still there - it's just dead mold. Dead mold still contains allergens and needs to be removed.
Way below market rates: If everyone's quoting $3,000-$4,000 and someone quotes $800, they're cutting corners you can't see.
Get a Straight Answer
I know pricing uncertainty is stressful. That's why we do free mold inspections throughout the Lansing area. I'll tell you what you're dealing with, what it'll cost to fix, and whether I think insurance might cover it.
No pressure, no scare tactics. Just honest assessment.
Call M&M Restoration at 616-648-7775 or request an inspection online.
About the Author
Derek Mikowski
Derek is the owner of M&M Restoration and has over 10 years of experience in property restoration. He's IICRC certified and has personally overseen more than 2,800 restoration projects in the Greater Lansing area.