Mold Inspection & Remediation in San Diego, CA

Lindbergh Field averages just under 10 inches of precipitation a year under NOAA's 1991–2020 normals, so most San Diego homes go months without rain. That makes the rare big storm hit hard. On January 22, 2024, Lindbergh Field recorded 2.73 inches in a day, the city's wettest January day on record, and flash flooding damaged homes in neighborhoods such as Southcrest; the city declared a state of emergency. Mud and water that sat in lower walls and floors became the start of mold for many of those homes.

Near the coast, the air does the rest. Pacific Beach, Ocean Beach, Point Loma, and La Jolla sit under the marine layer much of late spring and early summer, and closed-up rooms, closets, and bathrooms without fans can stay damp. Inland, in Clairemont, Mira Mesa, and Rancho Bernardo, mold more often traces to a plumbing leak, a water heater, or an air conditioner drain. About 52% of the city's homes were built before 1980, according to the Census Bureau.

The EPA's guidance is the same here as anywhere: materials that stay wet more than a day or two are where mold gets its start, so drying fast matters more than any product.

No San Diego price survey that meets our standard is published, so these figures are national: inspections from Angi's cost data, lab samples and typical jobs from HomeGuide. Homes that took floodwater in January 2024 usually cost more, because floodwater is treated as contaminated and porous materials it touched are removed. Rebuilding is billed separately. See the remediation cost guide.

There is no mold license in California, which put a lot of weight on contractor checks after the January 2024 flood, when demand for cleanup crews in San Diego jumped. Before anyone tears out drywall, run the company through the Contractors State License Board lookup: any job of $1,000 or more needs a CSLB license, and so does any job that needs a City of San Diego permit.

For homes that took floodwater, ask how the crew will handle contaminated materials and how it will confirm the walls are dry before closing them. Also ask for a certificate of general liability insurance and a written scope. See the California page.

For San Diego homes hit by the January 2024 flood, the source of the water decided the claim: water that ran in from streets and creeks is flood water, covered only by a flood policy, which few San Diego homeowners carry. Rain through a roof or window damaged in a storm is more likely to be a homeowners claim. A burst pipe or failed water heater is the case a homeowners policy usually covers, with mold paid up to a separate limit.

Mold from long-term dampness in a coastal home, or from a slow leak, is commonly excluded. Photograph damage before cleanup and report it promptly; the California Department of Insurance takes complaints. See does insurance cover mold.