Risk Factors
Prevention Recommendations
Run exhaust fans during and 30 minutes after showers. Vent the dryer outdoors. Open windows when weather permits to reduce moisture buildup.
This area has 118 NFIP flood claims. After any flooding, dry affected areas within 24-48 hours. Consider flood-resistant building materials for below-grade spaces.
Use a humidity gauge ($10-20) in bathrooms, basements, and crawl spaces. Act quickly on musty odors, condensation on windows, or visible dark spots on walls and ceilings.
If you suspect mold, hire a certified mold inspector ($200-600). DIY testing kits are unreliable. A professional inspection may assess moisture and hidden growth; sampling is used when appropriate.
Control Indoor Humidity
Keep indoor humidity below 50% when possible and fix leaks promptly to reduce mold growth. A dehumidifier can help control humidity in damp areas.
hOmeLabs 50-Pint Dehumidifier - ~$230 →Mold Risk in Granite Bay, CA
ZIP code 95746 has low mold risk with a score of 37/100. Mold risk still depends on moisture inside each building; plumbing leaks, poor ventilation, or flood damage can cause mold problems.
Why Mold Matters
Indoor mold exposure affects approximately 4.6 million asthma cases in the U.S. annually, according to EPA estimates. Health effects include:
- Allergic reactions — sneezing, runny nose, red eyes, skin rash
- Asthma triggers — mold can trigger asthma symptoms in sensitive people, including children
- Respiratory effects — dampness and mold exposure are associated with sinus and bronchial symptoms
- Property damage — untreated mold degrades drywall, wood framing, and insulation
Humidity Profile for 95746
The annual average relative humidity in this area is 57%. Sustained indoor humidity above 60% can encourage mold growth, and leaks or wet materials can also support it.
Summer humidity averages 47%, which is generally manageable with basic ventilation.
Housing Age Factor
The median home in ZIP 95746 was built in 1981. Homes from this era may have some moisture management gaps, particularly around older windows, bathrooms, and crawl spaces.
Flood History
This area has 118 NFIP flood insurance claims, indicating water intrusion events that create ideal mold conditions. After flooding, mold can begin growing within 24-48 hours on wet building materials. Flood claims in the area are a reason to check this home for past or current water intrusion.
About This Assessment
This mold risk score combines NOAA humidity data, Census housing age data, FEMA NFIP flood claim records, and EPA water system violation data. Individual home mold risk depends heavily on maintenance, ventilation, and past water damage events not captured in area-level data.
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Frequently Asked Questions
What factors increase mold risk?
Indoor humidity above 60%, poor ventilation, past water damage, and moisture intrusion can increase mold risk. Basements, crawl spaces, and bathrooms without exhaust fans are the most common problem areas. Flooding or persistent indoor moisture can raise mold risk in a home.
How do I know if I have mold?
Common signs include a persistent musty smell, visible discoloration on walls or ceilings, and allergy symptoms (sneezing, itchy eyes, congestion) that worsen indoors. Check behind furniture, under sinks, and around windows for hidden growth. If you suspect hidden mold, a professional inspection ($300–$600) can investigate moisture and possible hidden growth.
How much does mold remediation cost?
Professional mold remediation typically costs $500–$6,000 depending on the affected area and severity. Small patches (under 10 sq ft) can often be cleaned with household products. Larger infestations may call for containment, HEPA cleaning, material removal, and help from a qualified professional. Most homeowner insurance policies do not cover mold unless it resulted from a covered event like a burst pipe.