Practical tools that turn real data and a few quick questions into answers you can act on.
Every tool here turns real data or a few quick questions into a clear answer, with no guesswork and no upsell. Start with whichever fits your situation.
Start with Your Home Report
Pick your state and city to see your local mold-climate risk, how old homes tend to be, and the exact offices to call, built from real NOAA weather and census data. It is the fastest way to understand what your home is up against.
Open Your Home Report
For homeowners
Is this mold?
A five-tap guided check tells you what you are likely looking at and the right next step.
Start the check
Do I need a pro?
Four questions on size, location, and moisture show whether it is a safe DIY job or a call to a pro.
Run the triage
Mold removal cost estimator
Honest local ranges by area and severity, plus the gotchas that move the price.
Estimate cost
Home mold-risk audit
Walk seven areas of your home with quick yes or no taps and get a personalized report with a fix for every flag.
Start the audit
Where mold hides
An illustrated house cutaway with 8 tappable hiding spots, from the attic to the crawl space, each with its fix.
Explore the house
Indoor humidity mold risk
Enter your humidity and temperature to see your mold risk level, plus the dew point where condensation starts.
Check my air
Dehumidifier size calculator
Match your room size and dampness level to the right pint capacity under the current DOE rating.
Size my unit
Bathroom exhaust fan sizer
Get the fan CFM your bathroom needs from its size and fixtures, so shower steam clears instead of settling.
Size my fan
Mold growth timeline
Set how long it has been wet, plus temperature, humidity, and material, and see where you land on the clock.
Run the simulator
Is my mold covered by insurance?
Three taps on the water source, your timing, and your policy show how claims like yours typically go.
Check your claim Symptom self-check
Check symptoms linked to damp indoor spaces per CDC and EPA guidance and get a plain next step.
Start the checklist
For renters and property managers
Renter rights and notice letter
Know your rights and generate a dated notice letter to your landlord in minutes.
Open the tool
Renter evidence builder
Turn what you are seeing into a dated observation log that attaches straight into your notice letters.
Build your log Renter mold rights by state
Pick your state to see how habitability and written notice typically work, plus who to call.
Look up your state Repair request with a deadline
Build a dated letter that names an exact repair-by date. Pick 7, 14, or 21 days, copy, and send.
Generate the letter Track your repair request
Enter when you sent notice and see days elapsed, the common 14-day window, and your next step.
Open the tracker
Dispute a deposit deduction
Know when a mold charge is unfair and generate a firm, dated dispute letter in minutes.
Open the guide and tool
Tenant complaint response
Build a documented, defensible response the moment a tenant reports mold.
Open the wizard
Commercial cost estimator
Ranges by building type and square footage to frame a remediation budget.
Estimate cost
Explore your area
US mold risk map
Tap any state for its mold-climate score, rainfall, temperature, and the local guides we cover.
Tap your state
Mold-climate index map
See how mold-prone each state's climate is, colored by real weather data.
Open the map
The mold clock
See how fast mold can take hold after water damage, hour by hour.
Watch the clock
Who to call directory
The government offices that handle mold, filterable by type and state.
Open the directory