Water, Flood and Mold Damage Restoration in Costa Mesa
Costa Mesa sits on a mesa above the Santa Ana River, and some of its streets flood in even moderate storms. We extract, disinfect and dry homes and businesses any hour.
- Free initial inspection
- IICRC WRT
- AMRT
- FSRT
- OCT
- Residential and commercial
- Se habla español
Updated
Quick answers
- Do you serve Costa Mesa?
- Yes. Major League Response responds in Costa Mesa 24/7, including nights, weekends, and holidays, along with the rest of Los Angeles, Orange County and Riverside.
- How fast can you get to Costa Mesa?
- Call any hour and a crew heads your way. You get an arrival window on the call and a text when the crew is rolling, so you know when to expect us.
- What do you handle in Costa Mesa?
- Emergency water extraction and structural drying, mold remediation, fire and smoke cleanup, sewage cleanup, odor removal, and contents pack-out, for homes and businesses.
- Do you work with insurance?
- We document the loss for your carrier and can bill them directly for our services. You stay responsible for your deductible.
- Are you certified and insured?
- Our technicians hold IICRC certifications in water damage restoration, applied microbial remediation, fire and smoke restoration, and odor control. General liability and workers' compensation insurance in force.
- How do I reach you right now?
- Call now (818) 966-6069
What's different about restoration in Costa Mesa
- Costa Mesa's historical society records 1916 as the worst Santa Ana River flooding since 1884.
- In a December 2018 storm, water on Pomona Avenue reached almost four and a half feet, leaving a mud line more than four feet up a wall.
- Neighbors near Pomona Avenue and 17th Street describe it as a flooding hotspot in moderate storms.
- In February 2024 a man was rescued from the flood channel near Fairview Road and Sunflower Avenue.
Damage at a property in Costa Mesa? Call any hour, or ask for a callback.
Costa Mesa's flood history starts with the river. The city's historical society records 1916 as the worst Santa Ana River flooding since 1884, and fatal floods ran across Orange County in 1938. The river is controlled now, but rain still finds the low spots. Neighbors near Pomona Avenue and 17th Street call their street a flooding hotspot in even moderate storms, and in a December 2018 storm water on Pomona Avenue reached almost four and a half feet, leaving a mud line more than four feet up a wall.
The flood channels move fast. In a February 2024 storm, a man was rescued from the channel near Fairview Road and Sunflower Avenue, and the fire agency warned that the channels fill quickly with dangerous water. For homes, the more common storm problem is water against the foundation and into garages and ground floors when street drains fall behind.
Water from outside is contaminated by the time it gets in, so a Costa Mesa flood job starts with containment, extraction, cleaning and disinfection, and only then drying. Carpet, pad and upholstered furniture that sat in it usually cannot be saved. A mud line on a wall means silt behind the baseboards too, and it has to come out completely before drying works.
Most calls are still leaks inside. Costa Mesa has a large share of apartments and older homes, and water in a multifamily building rarely stays in one unit. We trace it to its source, check the units around it, and keep a separate photo and moisture record for each unit number, so owners, managers and carriers are all working from the same facts.
Older single-family homes on the Westside and Eastside have plumbing at the age when it starts to fail, under slabs and in walls. Newer homes and townhomes fail at appliances: washing machine hoses, water heaters and dishwasher lines. Those begin as clean water, and the job is speed, with extraction first and drying logged every day until the structure reads dry.
Federal guidance says to dry water damage within 24 to 48 hours if possible, because materials that stay wet longer usually grow mold. We handle mold under containment with HEPA filtration and tell you plainly what we found.
Before a crew arrives, shut off the water at the fixture or the main, keep the power off in rooms where water reached outlets, move what you can off the floor, and photograph every wet room, including any mud line, before anything moves.
Costa Mesa's businesses, from the shops and offices around South Coast Plaza to restaurants along Harbor Boulevard and 17th Street, need water losses handled around their hours. We plan the job to get the public space back first where it is safe, contain the work areas, and keep the daily logs and photos a landlord and a carrier will ask for.
If you rent, your landlord's policy generally answers for the building, not your belongings, and a renters policy is where personal property questions usually go. Photograph what was damaged and tell your landlord in writing so there is a dated record. Keep receipts for anything you buy and any night you spend elsewhere while the unit dries.
On insurance, we document the loss with photos, moisture readings and daily drying logs, estimate our own scope of work, and can bill your carrier directly for our services. FEMA states that standard homeowner policies do not cover flood, so street water is normally a separate flood policy question. We respond anywhere in Orange County, Los Angeles and Riverside around the clock, we work in English and Spanish, and the first inspection is free.
Common questions in Costa Mesa
Have a question that is not answered here? Call any hour, or ask for a callback.
Our street floods every big storm. What can we do ahead of time?
There is a mud line on our walls. Does that change the job?
Does homeowners insurance pay for street flooding?
Do you work with apartment owners in Costa Mesa?
Areas near Costa Mesa

Get a crew on the way now
Call for an active loss. Request a callback for anything that can wait.
- Anywhere in Los Angeles, Orange County and Riverside
- Free initial inspection
- We can bill your insurance directly
- IICRC-certified technicians