Free visual inspection and a written scope of work before any mitigation begins - photos, moisture readings, and drying logs go in your claim file
The scope we write is the scope we bill. Anything new gets shown to you, in writing, before we touch it.
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AfterHow Much Does Mold Remediation Cost in Los Angeles?
Mold Remediation in Los Angeles typically costs between $1,500 and $6,500 for most homes, with the average single-room job landing around $2,800. That price covers containment, removal of affected materials, antimicrobial treatment, and drying. Small, isolated spots under 10 square feet can run as low as $500, while whole-home remediation after a slab leak or roof failure can push past $12,000.
We’re Wendell Water Damage Restoration, founded in 2006 and part of the Relay Home Co. family. Every mold job we do in Los Angeles comes with a written price before any work starts, a live technician arrival time you can track, and before-and-after photos texted to you when we’re done. You’ll know the number before we pick up a tool.
Mold Remediation Cost Breakdown (2026)
Here’s what each part of a typical Los Angeles mold job costs in 2026. These ranges reflect real LA-area pricing, not national averages.
| Service | Typical Range | Notes |
|---|---|---|
| Mold inspection & moisture assessment | $250 – $650 | Often credited toward the remediation if you move forward, but not always, so ask before you book. |
| Air quality / lab testing (per sample) | $75 – $150 | Most LA jobs need 3 to 5 samples: indoor air, outdoor baseline, and surface swabs. |
| Containment setup (plastic barriers, negative air) | $300 – $900 | Higher for open floor plans and multi-room spreads. |
| Mold removal, small area (under 10 sq ft) | $500 – $1,200 | Bathroom caulk lines, single cabinet, one wall section. |
| Mold removal, mid-size (10 – 100 sq ft) | $1,500 – $4,500 | Most LA kitchen and bathroom jobs fall here. |
| Mold removal, large (100 – 300+ sq ft) | $4,500 – $12,000+ | Whole rooms, attic sheathing, post-slab-leak flooring. |
| Antimicrobial treatment | $200 – $800 | Applied after removal to stop regrowth. |
| HEPA vacuuming & final cleaning | $150 – $600 | Captures spores the naked eye can’t see. |
| Drying & dehumidification (per day) | $75 – $200/day | Most jobs run 3 to 5 days using Dri-Eaz and Phoenix equipment. |
| Drywall / material replacement | $300 – $3,500 | Depends how much we have to cut out. |
| Clearance testing after remediation | $300 – $700 | Confirms spore counts are back to normal before containment comes down. |
Those line items stack. A 60-square-foot bathroom with a slow supply-line leak might total $2,400. The same bathroom with mold inside the wall cavity behind tile could hit $5,800, because we’re removing more material and drying longer. If you want a written number for your specific situation, that’s what our Mold Remediation in Los Angeles page walks through, and you can call (940) 466-4354 for a free estimate.
What Affects Mold Remediation Pricing in Los Angeles
LA is not a hard market to get mold in. June gloom pushes humidity into the 70s along the coastal side from Santa Monica to Long Beach most mornings between May and July, and our older housing stock has plenty of places for that moisture to hide. Here’s what moves your price up or down.
- Square footage affected. This is the single biggest driver. Anything under 10 square feet is a minor job. Past 100 square feet, most jobs need full containment and negative air machines running the whole time, which adds equipment and labor days.
- Where the mold is. Surface mold on painted drywall in a Sherman Oaks bathroom is simple. Mold inside an attic’s roof sheathing in a 1920s Craftsman near Highland Park is not, because you’re working overhead and often replacing decking. Crawl space mold in a Venice bungalow two blocks from the beach costs more too, because the source is usually rising damp that never fully stops.
- Hidden moisture source. If the cause is a pinhole slab leak under a San Fernando Valley post-war ranch home, you’re paying for leak detection before remediation even starts. Slab leaks in LA’s older copper and galvanized plumbing are common, and we regularly see the mold show up in baseboards before the homeowner knows there’s a leak.
- Material type. Porous materials like drywall, insulation, and carpet padding get removed, not cleaned. Non-porous surfaces like tile, glass, and metal framing can be cleaned and saved, which keeps cost down.
- Air quality testing requirements. Some LA landlords, property managers, and insurance carriers require pre- and post-remediation testing with lab reports. That adds $300 to $800 in most cases.
- Access and containment complexity. A third-floor condo in a building off Wilshire with no freight elevator takes longer to set up than a ground-floor house. That setup time gets billed.
Every job we run follows IICRC, RIA, and IFA standards, and we deploy the same equipment brands used on large commercial losses: Dri-Eaz, Phoenix, XPOWER, B-Air, and Injectidry. That matters here because psychrometric drying (tracking the air’s moisture level so we know when your home is truly dry, not just surface-dry) is what keeps mold from coming back after we’ve removed it. If you’re dealing with the water source itself, our home page covers how we handle the moisture side.
How to Save on Mold Remediation
There are real ways to lower your number without cutting corners on the parts that protect your health.
- Fix the water source first. If you remediate mold without stopping the leak, it returns. That’s a second bill you didn’t need. Get the leaking pipe, roof, or window sealed as part of the scope, or at minimum scheduled before remediation finishes.
- Get a written price before work starts, and compare it line by line. A quote that says “$4,200” with no breakdown is a quote you can’t compare. Ours comes itemized, and the number on the invoice is the number you pay.
- Ask whether inspection cost credits toward remediation. Some companies apply the inspection fee to the job. It’s worth one sentence on the phone.
- Check whether your homeowners policy covers the cause. LA mold claims are usually tied to a covered water event, like a burst supply line or sudden roof leak. Slow leaks and long-term humidity are usually excluded. Call your insurer before you sign anything.
- Don’t skip clearance testing to save $400. The clearance report is proof the job worked. If you sell the home later, it’s also documentation that protects you.
- Skip the ozone and fogging upsells. Ozone generators don’t remove mold, they mask odor. You want source removal followed by antimicrobial treatment and HEPA cleaning.
Free estimates are our default, not a favor you have to ask for. Call (940) 466-4354 and we’ll give you a written number before anything starts.
The No-Hassle Pricing Part
Here’s the thing most LA homeowners tell us they hate about hiring a mold company: the price at the end doesn’t match the price at the start. We put the price in writing before any work begins and text you a digital invoice when it’s done so you can pay straight from the link.
Every repair we do is covered by the 365-Day Done Right Promise: if it’s not done right, we make it right. That guarantee is stated in writing on every job, and if a repair fails, your second visit is free. It’s not a slogan, it’s a line in the paperwork. This is what The Relay Visibility Guarantee means when we say it.
A live person answers our phone 24/7. No voicemail, no callback queue, no phone tree. When a technician is on the way, you get a live arrival time you can actually track, and our technicians arrive background-checked and in uniform, so you know exactly who’s walking through your door.
FAQs – Mold Remediation Cost
How much does mold remediation cost in Los Angeles?
Mold remediation in Los Angeles runs $1,500 to $6,500 for most homes, with $2,800 being a typical mid-size job. Small spots under 10 square feet start near $500. Large jobs involving whole rooms or attic sheathing can exceed $12,000. Call (940) 466-4354 for an exact quote, free of charge.
Is it cheaper to repair mold or just replace the drywall?
Replacement alone often costs less than full remediation, but it doesn’t address the mold spores in the air or the moisture source, so it usually comes back. A proper remediation job in LA typically runs $1,500 to $4,500 for a mid-size area, and that includes removal, antimicrobial treatment, and drying, which is what actually stops the regrowth. Call (940) 466-4354 and we’ll give you a written comparison.
Can you come today?
Yes. We answer calls live 24/7, and same-day mold assessments are common across Los Angeles, including the Valley, Westside, and South Bay. When a technician is dispatched, you’ll get a live arrival time you can track rather than a four-hour window. Call (940) 466-4354 and we’ll tell you when we can be there.
Does homeowners insurance cover mold remediation in LA?
Coverage usually depends on the cause, not the mold itself. Sudden events like a burst pipe or water heater failure are typically covered up to policy limits, often $10,000 to $50,000. Long-term leaks, humidity, and deferred maintenance are usually excluded. A typical LA remediation claim runs $3,000 to $8,000, so it’s worth a call to your adjuster before you sign a contract. Call (940) 466-4354 if you want a written estimate to send them.
How long does mold remediation take, and how does that affect the price?
Most LA residential jobs take 3 to 7 days from containment to clearance, and drying time is the biggest day-to-day driver at roughly $75 to $200 per day for dehumidifiers and air movers. Delays happen when hidden moisture turns up behind tile or under flooring in older homes. Call (940) 466-4354 for a written timeline and price.
Get a Written Price Before Anything Starts
If you’ve seen mold in your Los Angeles home, the fastest thing you can do is find out what it’ll cost before anyone touches it. We’ll inspect, test, and hand you a written, itemized price. No vague ranges, no “we’ll see once we open the wall.” A live person picks up, and the price on the invoice is the price you pay. Call (940) 466-4354 for a free estimate.
Pricing reflects the Los Angeles market as of 2026. Wendell Water Damage Restoration offers free estimates – call (940) 466-4354.
Written by Blake Sorensen, Owner at Wendell Water Damage Restoration, serving Los Angeles since 2006.
What Our Customers Say
"Ceiling repaired, painted, and matched. The patch around the old water stain is invisible after painting."
- Clara T."Respectful crew, daily updates, and no surprises."
- Yasmin O."Dishwasher leak went under the floor. They found the wet area with a camera and dried it without tearing it all out."
- Aaron D.