Mold inspection & testing
Moisture mapping, thermal imaging and lab samples when they help. Ask for an inspector who does not also do the removal.
Inspection detailsFree quote service ยท Santa Rosa & Sonoma County, California
Mold Removal & Remediation in Santa Rosa, CA: Free Quotes from Local Pros
Musty smell when the heater kicks on? Dark spots on a bedroom wall after a winter storm? Describe the problem once, and independent mold inspection and remediation companies that work in Santa Rosa, California and Sonoma County reply with free quotes.
- Free quotes, no obligation
- Independent local companies reply to you directly
- Plain answers on cost, testing, insurance and California rules
Get your free quote
- Free quotes
- Independent local companies
- No obligation
- Plain answers on California rules
Found mold? What to do right now
- Stop the water if you safely can. Shut the fixture valve or the main, set a bucket under a dripping ceiling, tarp a roof leak only if it is safe to reach. The EPA says wet materials dried within 24 to 48 hours usually do not grow mold.
- Don't scrub, sand or bleach a large patch. Disturbing a big area can spread spores through the house. The EPA treats about 10 square feet as the size you might clean yourself; beyond that, get help.
- Take photos first. Your insurer, your landlord and every company quoting the job will want to see the original condition. Write down the date you found it.
- Keep kids and pets out and close the door. If mold may be in the furnace or ducts, don't run the system until someone checks it.
- Then call or send the form. Independent companies serving your part of Sonoma County reply with quotes. Call (707) 896-6015
If anyone in the home has breathing trouble or other symptoms, see a doctor. This site does not give medical advice.
Mold services you can get quotes for
Pick the problem closest to yours. Companies that handle that kind of job follow up with quotes. Images are illustrations.
Mold removal & remediation
Containment, HEPA air filtration, removal of moldy drywall and insulation, drying and a clearance check. Includes black mold and duct sections.
Removal details
Crawl space mold
Musty smell when the heat comes on, cupping floors, growth on joists over winter puddles. Common under older raised-floor homes.
Crawl space details
Floods, storms & leaks
Atmospheric river roof leaks, Laguna and Russian River flooding, burst pipes. Dry within 24 to 48 hours to head off mold.
Water and flood detailsMold in fire-rebuilt homes
Firefighting water in homes that survived, and construction moisture or flashing leaks in homes rebuilt after 2017 and 2020.
Fire rebuild details
Attic & roof-leak mold
Winter roof leaks, condensation on cold sheathing and bath fans that vent into the attic instead of outdoors.
Attic details
Bathroom & kitchen mold
Shower walls, window sills, under-sink leaks. Often the smallest jobs, and sometimes ones you can handle yourself.
Bathroom and kitchen details
Rental & tenant mold
For renters and landlords: notice, repairs and what California law says, in plain language. General information, not legal advice.
Renter and landlord detailsHow the free quote service works
Santa Rosa Mold Pros does not inspect, test or remove mold. It passes your request to independent companies that do.
Tell us what you see
Use the form or call. Say where the mold is, roughly how big it looks, what got wet and when, and whether the home has a crawl space. Photos can come later.
Local companies reply
Independent mold inspection and remediation companies that work in your part of Santa Rosa, CA or Sonoma County contact you to look at the problem and quote it.
You compare and choose
Check each CSLB license number, read the written scope, and pick the company you trust, or none. The quotes are free and there is no obligation.
Why mold shows up in Santa Rosa homes
Wet winters, bone-dry summers. NOAA's 1991 to 2020 normals give Santa Rosa about 31.5 inches of rain a year, and 83 percent of it falls from November through March. December averages 6.47 inches and February 6.39. June through September together get under half an inch. A slow leak that starts in a February storm can look dry by June while mold keeps growing inside the wall, and the first clue is often a musty smell when the heat comes on in the fall.
Atmospheric rivers and floods. In February 2019 the Russian River at Guerneville crested at 45.38 feet, more than 13 feet over flood stage, and about 1,900 homes across the county were affected. The county also saw federal disaster declarations for storms in 2017 and January 2023. Roof leaks, fallen trees and saturated crawl spaces follow every big storm.
Crawl spaces under older homes. Many older Sonoma County houses sit on raised wood floors over a crawl space. Winter runoff ponds underneath, joists and insulation stay damp, and the smell rises into the living space.
Fire rebuilds. The 2017 Tubbs Fire destroyed about 2,900 Santa Rosa homes, roughly 5 percent of the city's housing, and thousands were rebuilt quickly, some through the rainy season. Homes that survived next to burned lots took on firefighting water. Trapped construction moisture and new-construction flashing leaks are now surfacing. See mold in fire-rebuilt homes.
Older housing. Santa Rosa's median home was built in 1980 and half the stock predates it. Original plumbing, single-pane windows and tired roofs leak, and older materials raise asbestos and lead questions before anyone tears out drywall.
What mold remediation costs
Published national guides put most mold remediation at about $10 to $25 per square foot of affected area. A 100 square foot area often lands near $1,000 to $2,500; a small bathroom job can be $500 to $1,500; attics, ducts and whole-house jobs run into the thousands. For inspection alone, homeyou lists $284 to $446 for a Santa Rosa example (September 2026), while Fixr's national range for a separate inspection is $450 to $800.
These are published estimates, not quotes. Your Santa Rosa quotes come from the companies, and North Bay labor and disposal costs may run above national averages. Clearance testing and drywall rebuild are often billed separately.
California mold rules, briefly
- No mold-specific license. California does not issue one. But any job of $1,000 or more in labor and materials, any job that needs a permit, and any job with employees must be done by a CSLB-licensed contractor. Check the number on the CSLB license lookup.
- No state mold limits. The 2001 Toxic Mold Protection Act asked the state health department to set exposure limits, and it never adopted them. California does not require mold testing.
- Renters have rights. Since 2016, visible mold can make a rental substandard once a code or health officer finds it, and a landlord's repair duty starts on notice. See rental and tenant mold. General information, not legal advice.
- Contracts have limits. A home improvement down payment generally can't exceed $1,000 or 10 percent of the price, whichever is less, and you generally get a right to cancel. Read the FAQ for details.
Areas served
Requests come from all over Santa Rosa, California, from Coffey Park and Fountaingrove to Bennett Valley and Roseland, and from these Sonoma County towns.
Common questions
Is Santa Rosa Mold Pros a mold company?
No. Santa Rosa Mold Pros is a free quote service. You describe the problem once, and independent mold inspection and remediation companies that work in Santa Rosa, California and Sonoma County reply with quotes. The company you choose does the work and signs the contract with you. Asking costs nothing and you are not obligated to hire anyone.
How much does mold remediation cost in Santa Rosa, CA?
Published national guides put most jobs at about $10 to $25 per square foot of affected area, so a 100 square foot area often lands near $1,000 to $2,500. Bathrooms and crawl spaces tend to run lower, attics and ducts higher. Use the cost guide and calculator, then compare real quotes, since North Bay labor and disposal may run above national averages.
Does California license mold remediation companies?
California does not issue a mold-specific license. Any job of $1,000 or more in labor and materials, any job that needs a building permit, and any job using employees must be done by a contractor licensed by the Contractors State License Board (CSLB). Ask for the license number and check it on the CSLB license lookup before you sign.
Do I need mold testing before remediation?
Not always. If you can see mold and you know where the water came from, the EPA says sampling is often unnecessary. Testing helps when you smell mold but cannot find it, when you want an independent scope before hiring a remediator, or when you want clearance after the work. California has no state mold exposure limits, so lab numbers need careful interpretation.
Will my homeowners insurance pay for mold removal?
Sometimes, but do not count on it. The California Department of Insurance says mold is usually excluded, while sudden and accidental water damage is usually covered. Mold from a slow leak or seepage typically is not, and flood damage needs separate flood insurance. Photograph everything, report the water damage promptly and read your own policy.
Which areas do the companies serve?
Requests come from Santa Rosa, CA and nearby Sonoma County towns: Petaluma, Rohnert Park, Windsor, Sebastopol, Healdsburg, Sonoma, Cotati, and Guerneville with the Russian River towns of Monte Rio and Forestville. See the service areas page for local notes on each town.
Seeing or smelling mold? Get a clear plan.
Free, no-pressure quotes from independent companies across Santa Rosa, Petaluma, Rohnert Park, Windsor and Sonoma County.
Santa Rosa Mold Pros is an independent quote service and is not affiliated with any company of a similar name. Prices are published third-party ranges, not quotes. Images are illustrations.