Water damage drying
Fire & smoke cleanup
Mold remediation
Storm response
Sewage cleanup
ReconstructionFree 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.
Get your free estimateFast, Reliable Mold Remediation Across Claremont
Mold remediation in Claremont typically runs $1,800 – $6,500 depending on how far the growth has spread and whether it’s behind lath-and-plaster walls, in a crawlspace, or across multiple rooms. Our IICRC-certified crews respond to Claremont homes within hours, not days, because hidden moisture in older construction doesn’t wait. If you’re smelling musty air near the Village or spotting discoloration on a 1930s plaster ceiling, call (833) 620-3891 now. We’ll assess the situation, document everything, and give you a written scope before any work begins.
Key Takeaways
- Most Claremont mold remediation jobs cost $1,800 – $6,500, with inspection-only visits running $350 – $900.
- Lath-and-plaster walls hide mold longer than drywall, so odor often appears before visible growth.
- IICRC-certified crews follow S520 standards, with drying equipment sized for oversized rooms and thick plaster.
- We document every step for insurance claims and absentee landlords, a recurring need near the Colleges.
Restoration work we handle
Why Renew Water Damage Is Claremont’s Preferred Mold Remediation Company
We work in Claremont constantly. Noel Carbajal, who leads our restoration team, knows the difference between a 1928 Spanish Colonial near the Colleges and a 1970s ranch off Foothill Boulevard, and that knowledge changes how we approach every job. Homeowners around the Village, along Indian Hill Boulevard, and up in the foothills call us because our Mold Remediation team doesn’t treat surface stains and walk away. We chase moisture into the plaster, into the crawlspace, into the wall cavity.
Our technicians hold IICRC certification, the restoration industry’s most recognized credential. That means drying protocols follow documented standards, not on-the-job guesswork. We maintain memberships in the Restoration Industry Association and the IFA, so our methods stay current. For Claremont homeowners dealing with hidden mold behind 1930s lath-and-plaster, we bring commercial-grade Dri-Eaz dehumidifiers and XPOWER air movers sized to handle the high-ceilinged rooms and thick walls that dominate the older housing stock here.
Response time matters when a mold problem goes from nuisance to health concern. We’re positioned to reach Claremont quickly, and we arrive with everything needed to set up containment and start drying on the first visit.
Professional Mold Removal in Claremont
Professional mold removal in Claremont means more than wiping down a stained wall. Most of the homes around the Colleges and the Village were built between the 1920s and 1950s using lath-and-plaster construction. That material holds moisture like a sponge, and mold can colonize deep inside the plaster before you ever see a dark spot. A proper removal here involves containment, air scrubbing, moisture mapping, and physical removal of contaminated material using IICRC S520 methods.
Containment and Air Filtration
We seal off the affected area with plastic sheeting and run HEPA-filtered negative air machines to prevent spores from spreading through the house during removal. In Claremont’s older homes, where rooms open into each other without modern door seals, this step is non-negotiable. Our teams have done enough jobs near Memorial Park and in the neighborhoods behind the Claremont Village to know how quickly air moves through these old floor plans.
Removing Mold from Plaster and Crawlspaces
Depending on how deep the growth goes, we either clean and treat the surface or cut out and replace sections of plaster. Crawlspace mold is common in Claremont because clay sewer laterals root-infiltrate and wick moisture upward into floor joists and subflooring. We address the moisture source first, then treat the affected wood with an antimicrobial, then verify with post-remediation air sampling.
Mold Inspection in Claremont
A mold inspection in Claremont usually costs $350 – $900 and is the right first step when you smell something off but can’t see anything growing. Because lath-and-plaster walls can hide mold for weeks, an inspection includes moisture mapping with infrared cameras and hygrometers, not just a visual once-over. We probe wall cavities, check crawlspaces, and sample the air to confirm whether what you’re smelling is actually mold and where it’s coming from.
Moisture Mapping and Infrared Scanning
We use infrared cameras to read temperature differences inside walls, which pinpoint wet areas without opening up plaster. On a 1928 Spanish Colonial near the Colleges, our techs traced a cracked A/C supply line behind original plaster this way, after days of slow soaking had saturated the wall cavity. The infrared signature showed exactly where the moisture pooled, and we dried it with Injectidry mats without unnecessary demolition.
Air Sampling and Lab Results
Air samples are collected before and after remediation to verify spore counts return to normal background levels. This matters for Claremont landlords and property managers who need defensible documentation for insurance adjusters. Noel Carbajal has seen too many disputes over incomplete records, so our protocols include lab-verified results and drying logs on every inspection.
Trusted Brands We Service in Claremont
We run Dri-Eaz dehumidifiers, Phoenix axial fans, and XPOWER air movers because they handle Claremont’s oversized rooms and thick plaster without stalling out. When a crawlspace needs extended drying, we deploy Injectidry cavity systems that pull moisture from wall and floor cavities directly. We keep these units calibrated and ready to load, so a Claremont job doesn’t wait on equipment coming from a warehouse across the county. Mold Remediation in Claremont calls for equipment sized to the houses here, not generic rental units with half the capacity.
See the difference
Before
After
Before
After
Before
AfterCommon Mold Remediation Problems We See in Claremont Homes
- Hidden mold behind lath-and-plaster: The old walls absorb condensation and slow leaks without visible stains for weeks. By the time you smell it, the colony has often spread inside the cavity.
- Root-infiltrated clay sewer laterals: Mature pepper and citrus trees around older streets send roots into the old clay pipes, causing slow gray-water backup into basements and crawlspaces that feeds mold growth.
- A/C condensate leaks in hot weather: Claremont’s inland summers run hot and dry, so air conditioning runs for months. A cracked supply line or clogged condensate drain soaks plaster for days before anyone notices.
- Surface-only treatments that fail: A handyman wipes down the visible mold and calls it done. The moisture source remains, and mold returns within weeks. This is the most common call we take from Claremont homeowners who’ve been burned once already.
Pricing for Mold Remediation in Claremont, CA
A mold inspection in Claremont runs $350 – $900 depending on how many samples we pull and whether we’re mapping multiple rooms. Basic mold removal on a contained surface area, like a small bathroom or a section of crawlspace, typically runs $1,800 – $3,500. Full remediation involving multiple rooms, heavy plaster removal, or extensive crawlspace treatment lands between $4,000 and $6,500. What moves the price is how far the mold has traveled, how much material needs removal, and how long drying takes. We give you a written scope before work starts, so there’s no surprise invoice at the end. A free estimate is a phone call away.
We Also Serve Cities Near Claremont
Our crews work throughout the eastern San Gabriel Valley. In addition to Claremont, we handle mold remediation projects in Montclair, La Verne, Upland, and San Antonio Heights. If your property sits near the Claremont border in any of these communities, the same IICRC-certified technicians and the same documented protocols apply. Call us and we’ll confirm we serve your street.
Serving Claremont, CA — Our Local Coverage Area
We’re based in the Claremont area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About Mold Remediation in Claremont
Claremont’s 1920s – 1950s lath-and-plaster walls hold moisture far longer than modern drywall, so mold grows deep inside the wall cavity before you see surface staining. Remediation requires moisture mapping to find the wet plaster, drying the cavity with Injectidry systems, and often cutting out contaminated plaster rather than treating it from the front. Surface-only cleaning fails on this construction type. Call (833) 620-3891 and we’ll explain what your specific walls need.
Yes. Slow leaks from A/C supply lines, root-infiltrated sewer laterals, and high indoor humidity from Claremont’s hot summers all feed mold without ever leaving obvious water stains. Lath-and-plaster hides the moisture for weeks. If you smell mustiness but see no water, schedule an inspection with us at (833) 620-3891.
Most single-room mold removal jobs in Claremont take 1 – 3 days of active work, plus 2 – 5 days of drying and 2 – 3 days for post-remediation air sample results. Thick plaster and crawlspaces with clay sewer lines can extend drying. We’ll give you a written timeline before we start, and we document every drying log along the way. Call (833) 620-3891 for a property-specific estimate.
Yes. We provide moisture maps, a written scope, drying logs, and lab-verified air sample results for every job. Claremont landlords renting to students near the Colleges deal with insurance adjusters and anxious tenants, so we make sure the paperwork holds up. Call (833) 620-3891 before the semester turns into a dispute.
A mold inspection identifies whether mold is present, where it’s located, and what’s feeding it. Mold removal is the physical remediation, containment, and drying that eliminates the problem. In Claremont homes, the inspection step prevents unnecessary demolition by pinpointing exactly which walls need opening. We offer both, and we recommend inspection first when the mold source isn’t obvious.
Contact Renew Water Damage in Claremont
If you suspect mold in your Claremont home, don’t wait for the smell to spread. Call (833) 620-3891 for a free estimate. Noel Carbajal and our IICRC-certified crew will assess the problem, explain what’s happening, and give you a written scope before any work starts. We serve Claremont homes from the Village to the foothills, and we’re ready when you are.
Written by Noel Carbajal, Owner at Renew Water Damage, serving Claremont and the eastern San Gabriel Valley.