Mold Remediation Cost Calculator
Mold remediation cost for a typical 60-square-foot patch in a basement runs about $4,559, with a range of $3,547 to $5,572. But the number that decides your figure is EPA’s: below about 10 square feet, roughly a 3 ft by 3 ft patch, EPA says that in most cases you can handle it yourself. Cross that line and the same job jumps from $2,621 to $3,752, because containment, a negative air machine and a written scope all appear at once.
Estimate the cost for your home
Estimated cost to remediate mold
$4,565
typical · range $3,552 to $5,577 · 60 sq ft in a basement
Labour priced at national wages. Enter a ZIP code to price it for your area. 41% of this figure comes from modelled material, equipment and disposal prices — each line shows its own uncertainty.
Priced from bls.gov Aug 2026epa.gov Aug 2026and 1 more, all listed below
The one input that changes the answer for you.
The visible growth, measured. It is the input that decides everything else, which is why it is the first one.
Standing height and usually the easiest access, which is why it is the baseline for hours.
Board goes back with insulation, tape, compound and paint. Two trades: a drywall installer and a painter.
1 / 5
The figure above is already calculated. Each step just makes it more yours, and you can stop at any of them.
60 sq ft is over EPA’s 10-square-foot line
Above that size EPA sends homeowners to its professional remediation guidance, and the job grows three things it did not have before: a sealed containment barrier, a negative air machine and a written scope somebody signs. That is what the step below is made of. EPA, Mold Cleanup in Your Home is where the threshold is published.
Past 100 sq ft this model steps up again, to a full enclosure with an entry chamber. That second step is our estimate, not EPA’s, and it is labelled as one everywhere it appears.
What the ten-square-foot line costs
- 9 sq ft, under the line
- $2,639
- 10 sq ft, one foot over
- $3,764
- What the extra foot adds
- +$1,125
Same room, same surface, same answers to everything below. Nobody publishes the price of the tenth square foot, so this page calculates it.
| Line item | Qty | Cost | Source |
|---|---|---|---|
| Moisture survey, containment build and equipment setup2 h under 10 sq ft; ceil(5 + area × 0.03) from 10 to 100; ceil(10 + area × 0.04) above 100 (modelled) | 7hour | $323–$347 | sourced |
| Polyethylene containment, zippered access and floor protection0 under 10 sq ft; max(100, area × 2) from 10 to 100; max(250, area × 3) above 100 (modelled) | 120sq ft | $42–$144 | estimated±55% |
| HEPA negative air machine and ductingmax(2, ceil((setup + removal hours) ÷ 16) + 1) at or above 10 sq ft (modelled) | 3day | $195–$420 | estimated±37% |
| HEPA cartridge, pre-filters and vacuum bags1 per job at or above 10 sq ft (modelled) | 1lot | $60–$190 | estimated±52% |
| LGR dehumidifier and air movers0 if the structure is dry; otherwise 2 days under 10 sq ft, 3 up to 100, 5 above (modelled) | 3day | $330–$810 | estimated±42% |
| Daily monitoring while the equipment runsceil(1.5 h × (equipment days − 1)) (modelled) | 3hour | $139–$149 | sourced |
| Strip out the containment and bag the plasticceil(1 + barrier sq ft × 0.004) where there is containment (modelled) | 2hour | $92–$99 | sourced |
| Respirators, suits, gloves and gogglesceil(total remediation crew hours ÷ 8) (modelled) | 4worker-day | $72–$220 | estimated±51% |
| Sheeting, moving blankets and tape to protect contents1 in a living space or basement, 0.6 in a bathroom, 0 in an attic or crawl space (modelled) | 1lot | $45–$180 | estimated±60% |
| Construction labourer: move the contents out and wrap what stays1 in a living space or basement, 0.6 in a bathroom, 0 in an attic or crawl space (modelled) | 1lot | $132–$142 | sourced |
| Remove affected material, HEPA vacuum and damp wipeceil(6 + area × hours/sq ft × access factor) (modelled) | 13hour | $600–$645 | sourced |
| Detergent and wiping mediamax(40, area × share of surface that is cleaned rather than removed) (modelled) | 40sq ft | $8–$26 | estimated±53% |
| Antimicrobial coating for cleaned framingaffected area in square feet, at 0.012 crew-hours per square foot (modelled) | 60sq ft | $11–$42 | estimated±59% |
| Hazmat technician: mask, spray and back-roll the coatingaffected area in square feet, at 0.012 crew-hours per square foot (modelled) | 60sq ft | $33–$36 | sourced |
| Final HEPA detail clean of the area and the exit routeceil(2 + area × 0.02) (modelled) | 4hour | $185–$198 | sourced |
| Double-bag debris and haul awayremoval sq ft ÷ 150, rounded up to the half yard, with a floor of 0.5 yd³ (1 where there is containment) | 1cubic yard | $45–$110 | estimated±42% |
| Supervisor: written scope and sign-off0 under 10 sq ft; 1.5 h from 10 to 100; ceil(4 + area × 0.02) above 100 (modelled) | 1.5hour | $112–$120 | sourced |
| Repair the water source: accessible plumbing parts1 where the water source is repaired in the same job (modelled) | 1lot | $60–$380 | estimated±73% |
| Plumber: trace and repair the leak4 plumber-hours where the water source is repaired (modelled) | 4hour | $238–$256 | sourced |
| Replacement drywall or ceiling tile, insulation, tape and finishremoval sq ft where board is replaced (modelled) | 48sq ft | $86–$264 | estimated±51% |
| Drywall and ceiling tile installer: hang and finishceil(8 + removal sq ft × 0.06) where board is replaced (modelled) | 11hour | $605–$650 | sourced |
| Painter: prime and paint backceil(2 + removal sq ft × 0.015) where board is replaced (modelled) | 3hour | $138–$149 | sourced |
| Total | $3,552–$5,577 | ±22% |
Where these numbers come from
- Labour rates by area
- BLS Occupational Employment and Wage Statistics, May 2025, for hazardous materials removal workers, construction labourers, supervisors, plumbers, HVAC mechanics, drywall installers and painters in your metropolitan area. Retrieved 2026-08-20. Benefit load from BLS Employer Costs for Employee Compensation. BLS publishes no mold remediation technician, so the closest published occupation is used and the substitution is stated on every line that relies on it.
- EPA's 10-square-foot threshold, and what is ours
- The threshold is EPA’s and it is quoted here exactly as published: “less than about 10 square feet (less than roughly a 3 ft. by 3 ft. patch)” can in most cases be handled by the homeowner, per EPA, Mold Cleanup in Your Home, retrieved 2026-08-22. Above it, EPA refers homeowners to EPA, Mold Remediation in Schools and Commercial Buildings Guide: Chapter 1. The second step this model takes at 100 square feet is ours, not EPA’s, and so are every hour, every material band and every equipment day. Those are labelled as estimates in the breakdown rather than attributed to an agency.
- Drying, and why the water source is a line rather than a footnote
- EPA, A Brief Guide to Mold, Moisture and Your Home is the basis for treating drying as its own decision, driven by how wet the structure is rather than by how long the demolition took. Retrieved 2026-08-22. Where the water is groundwater under a vented crawl space, cutting off the source means encapsulating the crawl space rather than calling a plumber. Where it arrives through a foundation wall, the plumbing allowance on this page does not apply at all and the job is waterproofing the basement. Remediating without stopping the water is paying for the same work twice.
- Why a remediation crew costs more than a handyman
- OSHA, Mold sets out the employer’s obligations behind the respirator: a written respiratory protection programme, medical evaluation and fit testing. None of those are free and all of them sit inside the hourly rate. Retrieved 2026-08-22. It is a real reason for the price difference rather than a markup.
- Health: what this page will not tell you
- This calculator prices a construction job. It does not say whether mold in a house is making anyone ill, how much exposure matters, or what any symptom means, because that is a question for a doctor. CDC, Mold and EPA’s mold cleanup guidance publish what is known; anyone worried about someone’s health should speak to a health professional, which is what EPA says too. Retrieved 2026-08-22.
- Insurance: one fact, and no guesses
- We do not model what a policy pays and we will not guess at it. The single national fact worth stating comes from FEMA, Flood Insurance: most homeowners insurance does not cover flood damage, which is why water that arrived from outside and water that arrived from a pipe are different conversations. Everything beyond that is written in your own policy and is a question for your insurer and your agent. Retrieved 2026-08-22.
- Material prices
- Modelled estimates, not sourced prices. No public, machine-readable source of US residential material prices exists, and we would rather say so than pretend otherwise. Each line carries its own uncertainty band. How we estimate them.
Contractor overhead and profit applied at 33–43% over direct cost. Data last reviewed 2026-08-22.
What this figure does not include
- Vermiculite insulation and any suspected asbestos
- Not priced here, on purpose. Vermiculite loose-fill and older building materials can contain asbestos, which has to be established by testing before anything is disturbed and, if present, handled by a licensed abatement contractor under its own rules. Putting a cheap number on that work would be worse than putting no number on it. If either is in the area, stop and get it tested before any demolition.
- Anything to do with health
- This page prices a construction job and nothing else. It does not say whether mold in your house is making anyone ill, how much exposure matters or what any symptom means, because that is a question for a doctor and we are not one. EPA and CDC publish what is known about mold and health and both are linked from this page; anyone worried about someone's health should be talking to a health professional, not to a cost calculator.
- What your insurance will or will not pay
- We do not model it and we will not guess at it. What a policy covers is written in that policy, and the only people who can tell you how it applies to your loss are your insurer and your own agent. The one national fact worth knowing is FEMA's: most homeowners insurance does not cover flood damage, which is why water that arrived from outside and water that arrived from a pipe are different conversations.
- Investigative testing to find hidden mold
- Thermal imaging, borescope inspection of wall cavities and air sampling to locate growth you cannot see are a separate service from an independent consultant. This figure prices the verification AFTER the work, not the search before it.
- Emergency water extraction
- If there is standing water right now, that is water mitigation: a different crew, often within hours and at emergency rates. This figure assumes the flooding is over and the mold is what was left behind. Getting water out within 24 to 48 hours is also the cheapest way to avoid needing this page at all.
- Structural repair, and the repairs the allowance does not cover
- Rotted sill plates, joist ends and subfloor are carpentry with their own engineering questions. So are a rebuilt shower pan, tiling, waterproofing a foundation wall, a roof and exterior grading: the plumbing allowance on this page covers accessible plumbing parts and nothing else. This is also why waiting gets expensive, because drywall is cheap and framing is not.
- Contents that cannot be saved
- Upholstered furniture, mattresses, carpet pad, cardboard, books and papers that were in contact with mold generally cannot be cleaned to a state anyone is comfortable with. Deciding what goes and replacing it is a separate cost and a personal one, and averaging it into a national figure would be meaningless.
- Permit fees and licensing
- Some jurisdictions require a permit for the reconstruction and a few license mold remediation itself. Fees vary with no national source, so they are excluded and said rather than averaged into the figure.
Questions people actually ask
Can you remediate mold yourself?
EPA publishes a size threshold and it is the clearest answer anyone gives: if the moldy area is less than about 10 square feet, which is less than roughly a 3 ft. by 3 ft. patch, EPA says that in most cases you can handle the job yourself. Above that it points homeowners at its professional remediation guidance instead. That line is also where the money changes shape. With the same room, the same surface and the same answers to everything else, this calculator puts a 9 square foot patch at about $2,621 in Atlanta and a 10 square foot one at about $3,752, because a containment barrier, a negative air machine, filter media, a teardown and a written scope all appear at once. Nothing on this page is health advice: EPA and CDC publish what is known about mold and health, and anyone worried about someone should be talking to a health professional.
Is it expensive to remove mold from a house?
It depends far more on the size of the affected area than on the house. A 60 square foot patch on mixed surfaces in a basement, with the leak fixed and the wall put back, models at about $4,559 in Atlanta, with a range of $3,547 to $5,572. A 300 square foot job on porous material in a living space runs to about $14,051. At the other end, a 9 square foot patch over a structure that is already dry, with nothing being rebuilt, is about $1,004 of contracted work. Most of the difference is hours rather than goods, which is why the figure moves with the local wage for the trades involved and why the same job is not the same price in two different metropolitan areas.
Is mold remediation worth it?
Whether it is worth it for anybody’s health is a question for a doctor, and this page does not answer it. What it can tell you is where the money goes and what happens if you spend it badly. Remediating without fixing the water that caused the growth is work you pay for twice, which is why the source repair is switched on by default here rather than hidden. Roughly $955 of that $4,559 basement job is putting the room back rather than the remediation itself, so a quote that looks cheap may simply end at the open cavity. And waiting is the expensive option in one specific way: drywall is cheap and framing is not, so a small patch left alone becomes a carpentry job with structural questions attached.
What to do if you can't afford mold remediation?
Start by measuring the area, because EPA’s threshold may put your patch outside the professional job entirely: under about 10 square feet, less than roughly a 3 ft. by 3 ft. patch, EPA says that in most cases a homeowner can handle it. Then cut off the water, because mold that is still being fed comes back and every dollar spent before that is spent twice. Fixing the source is often plumbing, but where water is arriving through a foundation wall or the ground under a crawl space it is not a plumber’s job at all. On insurance, the only national fact worth stating is FEMA’s: most homeowners insurance does not cover flood damage. What your own policy covers is written in your policy, and only your insurer and your agent can tell you how it applies.
Taken from Google’s “people also ask” results for this search on 22 August 2026, not invented.
Other cost calculators
The first of these are the jobs closest to this one — the ones that turn up in the same quote, or instead of it.
- Radon mitigation system cost
Built for the question people actually arrive with, which is a test result during a house sale, and shows what the pipe route and the soil under the slab really add.
- Foundation repair cost
Four different problems an order of magnitude apart, and the two cheap things worth doing before accepting a quote for the expensive one.
- Sump pump replacement cost
Puts the battery backup where it belongs — at the front — because it roughly doubles the job and is the only line that works during the outage.
- Deck cost
Prices a deck from its height as well as its footprint, because a deck is a structure rather than a surface, and puts wood against composite over ten years.
- The full mold remediation cost dataset
Every unit price, every quantity rule and the reasoning behind each estimate, as a plain table.
- How we calculate
The formula, the sources, and an honest account of which parts of the model are weak.