Mold remediation
Water damage drying
Fire & smoke cleanup
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 San Jose
Mold remediation in San Jose typically runs $1,800 – $6,500 depending on the affected square footage, the type of water that caused it, and whether the mold has reached structural framing or just surface materials. Most jobs we handle in San Jose are done within 3 to 7 days, and if you call (669) 200-0453 right now, a live person answers, not a phone tree. We know San Jose homes, slab foundations, 1950s ranch layouts, and the way winter storm leaks turn into summer mold problems if they’re not caught early. That local knowledge changes the scope of work before a tech ever cuts into a wall.
Why Wendell Restoration San Jose Is San Jose’s Preferred Mold Remediation Company
San Jose homeowners call us because we put the price in writing before any work starts, and the number on the screen is the number you pay. No vague estimates, no change orders after the drywall comes down. Crews throughout San Jose know the difference between a 1960s ranch on a slab in Willow Glen and a tight condo near Diridon Station, and they adjust the drying plan accordingly. We are part of the Relay Home Co. family, founded in 2006, and each location is independently owned and operated to The Relay Visibility Guarantee: live arrival time you can track, before-and-after photos by text, and a digital invoice you pay from a link.
Blake Sorensen leads the San Jose team with a simple rule: if it’s not done right, we make it right. That is the 365-Day Done Right Promise, stated in writing on every job. Background-checked, uniformed technicians show up when we say they will. We run IICRC-, RIA-, and IFA-standard practices on every project, using Dri-Eaz and Phoenix drying equipment, the same gear used on large commercial loss sites. Homeowners in Naglee Park, Rose Garden, and Evergreen see the same level of care, the same written scope, and the same direct line to a live person, 24/7.
Restoration work we handle
Black Mold Removal in San Jose
Black Mold Removal in San Jose usually means Stachybotrys, the dark, slimy growth that thrives on continuously wet drywall, baseboards, and subfloor after a Category 2 or Category 3 water loss. In San Jose, especially in slab-on-grade ranches where moisture wicks upward through concrete, black mold can establish inside wall cavities within 48 to 72 hours, which is why we run moisture mapping before we ever open a wall. That step matters here more than in raised-foundation cities because the slab holds water longer, and mold can keep returning if the concrete is not dried to its pre-loss moisture baseline.
Containment and Removal in Slab-Foundation Homes
We build containment with negative air pressure so spores don’t move into the rest of the house while we cut out affected drywall, insulation, and baseboards. In a slab ranch, we also pull moisture readings from multiple rooms, because water travels under the slab and wicks up into flooring at a distance from the original leak. Then we treat the framing and concrete with antimicrobial application, following RIA and IFA standards.
When a San Jose Homeowner Needs This
You need black mold removal when the mold is growing on materials that were wet for more than two days, which usually means a supply-line leak behind a wall, a roof leak that went unnoticed through a rainy winter, or a sewage backup under a vanity. A typical black mold removal in San Jose runs $2,200 – $6,500, with the higher end including full containment, cabinet pack-out, and subfloor treatment. If you see dark staining that is actively damp or smells earthy, call (669) 200-0453 and we’ll send a tech to San Jose the same day.
Mold Removal Contractor in San Jose
Mold Removal Contractor in San Jose means a licensed, credentialed crew that does more than spray bleach and paint over the stain. It means a contractor who maps moisture, identifies the source, removes affected materials to the proper extent, dries the structure to a measured baseline, and documents the whole thing with photos before and after. In San Jose, the right contractor also understands that many older ranch homes have galvanized supply lines that fail during winter storms, and those failures often get misclassified as too minor to cut out, which is exactly how mold comes back months later.
What the Job Involves in San Jose’s Housing Stock
In a 1950s-to-1970s San Jose ranch, we often work around original plaster walls, oak strip floors over slab, and retrofitted additions where crawlspace joints were never sealed properly. We run Dri-Eaz dehumidifiers and Phoenix air movers, track drying with daily moisture readings, and replace removed materials to match the original construction where possible. The written scope you sign before work starts tells you exactly what gets cut, what gets treated, and what gets rebuilt.
Pricing for a San Jose Mold Removal Contractor
Expect $1,800 – $4,500 for a contained, single-room mold removal in San Jose, and $4,500 – $9,000 when multiple rooms, kitchen cabinets, or bathroom vanities are involved. Homes with slab foundations on the lower end of that range typically need extra drying time, and that extra time is in the written price before we start. Call (669) 200-0453 for a free estimate from a mold removal contractor who serves all of San Jose, from Evergreen to West San Jose.
Trusted Brands We Service in San Jose
We deploy Dri-Eaz dehumidifiers, Phoenix air movers, and Injectidry drying systems on San Jose jobs every week, the same professional-grade equipment used on large commercial losses. Because we stock replacement filters, hoses, and drying panels locally for San Jose customers, we can dispatch fast when a unit goes down mid-job or a homeowner needs an extra air mover after a winter leak spreads. We also work to RIA and IFA standards, which matters when your insurance adjuster asks for documentation that the drying was done to an industry-recognized baseline. In San Jose’s older homes, where a leak behind a kitchen wall can run under slab and pop up in a hallway three rooms away, the right equipment and the right standards are the difference between a one-week job and a recurring mold problem.
See the difference
Before
After
Before
After
Before
AfterCommon Mold Remediation Problems We See in San Jose Homes
- Slab-on-grade ranches hiding water under oak strip floors. In Willow Glen and Rose Garden, water from a failed supply line travels under the slab and wicks up through original 1950s oak strip flooring, which cups weeks after the visible leak is cleaned up. We pull moisture readings from multiple rooms before cutting anything, because a tech who skips that step is guessing.
- Galvanized supply lines failing during winter storms, then being misclassified. Older San Jose homes on original galvanized plumbing see pinhole leaks during wet winters, and that water is often Category 2, not Category 1, meaning affected drywall and insulation should be cut out, not just dried. Treating a Category 2 loss as a drying job leaves mold behind inside the wall.
- Retrofitted additions with unsealed crawlspace joints. San Jose’s tech boom brought decades of hasty additions to mid-century ranches, and the joint where the new foundation meets the old one is often left unsealed. Water and humidity move through that gap, mold grows inside the wall, and the homeowner never sees it until the drywall stains.
- Winter-to-summer mold timing. San Jose’s Mediterranean climate means the wet months run November through March, and a small leak that starts in February can sit behind drywall through the spring. By the first hot week in June, that damp cavity turns into an active mold bloom, and what could have been a $1,200 drying job is now a $4,000 remediation.
Pricing for Mold Remediation in San Jose, CA
Here are real numbers for San Jose, not national averages. A contained surface-mold cleaning in a single San Jose bathroom runs $800 – $1,800. A full mold removal with containment, drywall cut-out, and structural drying in one to two rooms runs $2,500 – $5,500. Black mold remediation in a kitchen or crawlspace with cabinet pack-out and subfloor treatment runs $4,000 – $8,000. The biggest factors are square footage, whether the water was Category 1 or Category 2/3, and whether the slab itself needs extended drying. Every San Jose estimate is written, itemized, and sent as a digital invoice before we start. Estimates are free. Call (669) 200-0453.
We Also Serve Cities Near San Jose
Our Mold Remediation crews cover San Jose and the surrounding South Bay, including Milpitas, Mountain View, Saratoga, and Newark. If you’re just outside city limits, we can usually reach you the same day. Every nearby-city job gets the same written price, tracked arrival time, and photo updates by text as a Mold Remediation in San Jose project.
Serving San Jose, CA - Our Local Coverage Area
We’re based in the San Jose 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 San Jose
A slab foundation means moisture from a leak or a burst supply line travels horizontally under the concrete, then wicks up through flooring and wall plates far from the original source. In a Willow Glen ranch with original oak strip floors over slab, we pull moisture readings from multiple rooms before cutting any drywall, because the visible stain is rarely the full extent of the water. Without that mapping, a crew can dry one room and miss a growing mold colony two rooms away. If you’re in a slab ranch in San Jose, ask any contractor how they are mapping the slab before they cut. If they don’t have an answer, call (669) 200-0453.
Often yes. Category 2 water, which is the classification for supply-line failures and other significantly contaminated water, can be absorbed into the oak strip flooring and underlayment, and the oak will cup and stain even after drying. The specific problem in San Jose is that original 1950s oak strip flooring over slab is difficult to patch, so we source matching material from salvage yards in the area rather than replacing the whole floor. Whether the floor is salvageable depends on how long the water sat, how the slab dried, and whether the moisture reached the subfloor. We’ll tell you the written answer before any work starts.
Because the structure starts wetter and dries slower. San Jose’s winter storms bring repeated rain, high outdoor humidity, and saturated soil around slab foundations, all of which keep the drying environment inside the home harder to control. Add in older galvanized plumbing that can fail again while walls are open, and a winter mold job in San Jose often runs a day or two longer than the same job in the dry summer. Our crew accounts for that in the written scope, and you’ll see daily moisture readings in the photo updates we text you.
In some cases, yes, if the water was clean, the leak was caught quickly, and the drywall was not saturated for more than 24 to 48 hours. We can often dry those in place with Dri-Eaz dehumidifiers and Phoenix air movers, leaving the drywall intact. But in a 1960s San Jose ranch, the real question is what happened under the slab, because water from a kitchen sink supply line can travel under the concrete and wet flooring that looks dry on top. We’ll tell you honestly whether drying-in-place is safe or whether cutting a small inspection hole makes more sense. Either way, the price is written before we start.
Mold stains are dried, dormant discoloration left behind after the surface moisture is gone; active mold is damp, soft, and spreading. In a San Jose attic, a winter roof leak that wets the sheathing and insulation can lead to active growth that keeps spreading through the spring, while a stain that dried fully over the summer may be inert. The difference matters because active mold requires remediation and source repair, while a dried stain can sometimes be treated and sealed. We test by touch, moisture meter, and swab when needed, and we’ll show you the results in photos before recommending a single step. Call (669) 200-0453 to schedule an inspection in San Jose.
Written by Blake Sorensen, Owner at Wendell Restoration San Jose, serving San Jose and the South Bay.