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 San Antonio
Mold remediation in San Antonio typically costs $1,800 – $4,500 for a contained removal in a single room, and $4,000 – $9,000 when water damage has spread through multiple rooms or into a crawl space. Most jobs are scoped, priced in writing, and started within 24 – 48 hours of the first call. We work across San Antonio every day, from Terrell Hills to Stone Oak, and we know how this city’s hard water, clay soil, and flash floods create mold problems that generic franchises don’t always read correctly. If you’ve found mold or smell mildew you can’t locate, call (325) 230-0537 and we’ll walk you through what happens next.
Why Tidemark Water Damage San Antonio Is San Antonio’s Preferred Mold Remediation Company
We’re an independently owned and operated location of the Cedarwell Care Promise network, founded in 2006 and run by Rick Sumner. That independence matters in San Antonio because mold here rarely behaves like the textbook cases. A 1930s limestone bungalow in Terrell Hills fails differently than a 2005 tract home in Alamo Ranch, and the crew that treats both the same way leaves mold behind in one of them. Our technicians are IICRC-, RIA-, and IFA-credentialed, background-checked, and they arrive in uniform with shoe covers and drop cloths already on the truck. Before any work starts, you get a written price. After the job, you get a photo of the clean-up. And every job carries the 365-Day Done Right Promise: if it’s not right, we make it right.
San Antonio homeowners call us because we explain before we act. We name what will be protected: floors, baseboards, the kid’s bedroom down the hall, the dog’s favorite spot by the door. We ask before we move anything. And we respect quiet hours when there’s a baby napping or a work-from-home call in the next room. That’s the C.A.R.E. code we work to: Clean up like it’s our own home, Ask before we move or touch anything, Respect the family’s time, Explain the price before the work. You can read more about how we approach this on our Mold Remediation page.
Restoration work we handle
Mold Remediation Services in San Antonio
Mold Remediation Services in San Antonio mean something specific here: removing the mold, correcting the moisture that fed it, and matching the materials of the house you actually live in, not just the house in the training manual. The job involves containment, HEPA air filtration, removal of water-damaged drywall or plaster, antimicrobial treatment, structural drying, and then the rebuild or patch. What it should never be is a quick spray-and-paint that leaves spores alive behind the wall. In a San Antonio home with hard-water pinhole leaks behind plaster, or a pier-and-beam crawl space that flooded silently months ago, a surface treatment doesn’t end the problem. It postpones it.
Containment and Air Quality Restoration
Before we open a wall, we set up negative air pressure in the work area so mold spores don’t drift into living spaces. HEPA-filtered air scrubbers run throughout the job. For families with children or pets, we use pet-safe antimicrobials where there’s a choice, and we can run equipment on lower-decibel settings during school hours and nap time.
Full-Service Moisture and Humidity Control
Mold doesn’t return when the moisture source is gone. In San Antonio’s subtropical climate, that means checking more than the visible damage. We moisture-map the surrounding walls and floors, trace the tide mark, and dry past it, using Dri-Eaz and Phoenix equipment. If a crawl space or slab is wicking groundwater, remediation has to address it or you’ll be calling again next spring.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Professional Mold Removal in San Antonio
Professional Mold Removal in San Antonio starts with finding out what kind of water fed the mold, not just scrubbing what you can see. Category 1 clean water from a supply line and Category 2 or 3 water from a sewage backup or flood carry different risks and different protocols. A proper removal includes discarding porous materials that can’t be fully cleaned, sanding or media-blasting framing where needed, and treating surfaces before any drywall or plaster goes back. In Alamo Heights and Terrell Hills, many 1920s – 1950s homes still have original galvanized steel supply lines that corrode in the area’s hard water, causing pinhole leaks behind plaster walls. Mold remediation there often requires matching vintage plaster and lath after water extraction and structural drying, work that a franchise crew without local trim and plaster experience will typically get wrong.
Post-Removal Rebuilds and Vintage Matching
When we remove damaged plaster in an older San Antonio home, we don’t slap a piece of orange peel drywall over a lath-and-plaster wall and call it done. We match lime plaster profiles, crown molding where needed, and trim profiles so the repair disappears. For our full page on this city and the neighborhoods we cover, see Mold Remediation in San Antonio.
Crawl Space Treatment
Pier-and-beam foundations are common in the older rings of San Antonio, and they’re a hidden mold factory after flash floods. Moisture gets trapped under floor framing with poor cross-ventilation, and mold grows where no one looks. Our crawl space crews inspect, remove contaminated insulation, dry the framing with Injectidry systems, and treat with antimicrobials designed for enclosed spaces. We also check vapor barrier condition and ventilation so the problem doesn’t reset after the next big rain.
Trusted Brands We Service in San Antonio
We service all major equipment makes and models for the brands San Antonio homes and buildings commonly use, and we keep local parts stock in our San Antonio metro office for faster turnaround on common failures. When we need something specific, our local supply relationships in the San Antonio area get us the part without waiting on a national warehouse. Because we carry Injectidry drying systems and Dri-Eaz and Phoenix equipment in our own fleet, we’re already set up for the foundation-drying work that mold remediation in this city so often requires. Our technicians are trained and credentialed through IICRC, RIA, and IFA, and we’ve spent our lives learning the specific failure modes of San Antonio housing stock, both the pier-and-beam homes near downtown and the slab homes spreading across the north and west sides.
Common Mold Remediation Problems We See in San Antonio Homes
- Pinhole leaks behind vintage plaster. Hard water eats galvanized steel supply lines in 1920s – 1950s homes in Alamo Heights and Terrell Hills. Water weeps behind walls for weeks before anyone notices, and by then mold has colonized the lath. We find the leak, fix the line, remove the damaged plaster, and match it.
- Silent crawl space mold after flash floods. San Antonio’s spot on the Balcones Escarpment sends runoff through low-lying neighborhoods fast. Pier-and-beam homes trap moisture under floor framing for months, hidden from view. We inspect under-floor spaces as standard on any flood-related call.
- Slab homes wicking groundwater through clay soil. Expansive clay in San Antonio shifts with rain and drought, cracking slabs in newer construction. Groundwater migrates up and feeds mold behind baseboards without any standing water. Moisture mapping catches it before we tear into the wrong wall.
- Remediators ripping out irreplaceable vintage materials. Historic lime plaster, original trim, and period molding get torn out and replaced with modern drywall by crews that don’t know better. In San Antonio’s older neighborhoods, we dry in place whenever possible, and when removal is necessary, we match materials, not just patch with whatever is on the truck.
See the difference
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AfterPricing for Mold Remediation in San Antonio, TX
A contained single-room mold removal in San Antonio typically runs $1,800 – $4,500, including containment, HEPA air filtration, material removal, antimicrobial treatment, and drying. When water damage extends through several rooms or into a crawl space, expect $4,000 – $9,000. Historic homes in Alamo Heights or Terrell Hills come in higher when vintage plaster matching and trim work come into play. Slab homes with groundwater wicking may need sump or drainage work before remediation is stable. You’ll see the written number before we start, always. Call (325) 230-0537 for a free estimate, and we’ll give you a real range after the first conversation, not a vague “we’ll see when we get there.”
We Also Serve Cities Near San Antonio
Our crews run throughout the San Antonio metro, including Schertz, Floresville, and New Braunfels. If you’re just outside the city line, we can typically reach you within the same response window, and the same written-price-first standard applies. We know the housing stock in these towns well, including New Braunfels’ older pier-and-beam homes near the Comal River and Schertz’s mix of mid-century and newer construction. You’re covered by the same 365-Day Done Right Promise no matter which side of the county line you’re on.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio 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 Antonio
Yes. Pier-and-beam homes in San Antonio need crawl space inspection and treatment as part of any mold remediation, because moisture trapped under floor framing is the most common hidden mold source in these houses. Our crews check under-floor ventilation, insulation, vapor barrier condition, and framing moisture before remediation is considered complete.
Call (325) 230-0537 and we’ll explain what a pier-and-beam inspection covers.
Mold can begin growing in San Antonio’s warm, humid climate within 24 – 48 hours of a water leak, and faster if the leak is behind a wall or under flooring where airflow is poor. Summer heat accelerates it. That’s why we respond fast and why drying past the tide mark matters more here than in drier climates.
Call (325) 230-0537 as soon as you suspect a leak, and we’ll tell you what to do before we arrive.
Cleaning removes surface mold you can see. Full mold remediation in San Antonio removes the mold, contains the spores during removal, corrects the moisture source, treats surfaces with antimicrobials, and verifies with drying and air quality checks. A surface cleaning without fixing the moisture problem is temporary in this climate.
Call (325) 230-0537 and we’ll help you decide which level of service your situation needs.
Yes. We match lime plaster, lath, trim profiles, and crown molding in Alamo Heights, Terrell Hills, and other San Antonio neighborhoods with pre-WWII housing stock. We recently remediated a 1930s limestone bungalow in Terrell Hills where a corroded galvanized supply line had been weeping behind original plaster walls for weeks. Our crew set up containment, removed category 2 water-damaged plaster and lath, and ran Dri-Eaz air movers and dehumidifiers until moisture readings hit pre-loss condition. Antimicrobial treatment and matching lime plaster brought the wall back without a visible patch. That’s the standard we bring to every older home in San Antonio.
Call (325) 230-0537 for a free assessment of your home’s specific materials and condition.
In most cases, mold remediation is covered when the mold was caused by a covered water loss, like a burst pipe or storm damage. San Antonio homeowners with flash flood claims or sudden plumbing failures are usually positioned well, but coverage depends on the specific policy. We take photos before, during, and after the job, and we coordinate directly with your adjuster so the claim moves forward without you chasing it.
Call (325) 230-0537 and we’ll help you understand what your policy likely covers before you decide anything.
Get Your Free Mold Remediation Estimate in San Antonio
If you’ve found mold, smelled mildew, or seen water staining you can’t explain, call (325) 230-0537. A live person answers, day or night, because mold doesn’t wait for business hours and neither should you. We’ll ask the right questions, give you a straight answer about what you’re likely facing, and schedule a free estimate. Written price before any work starts. Shoe covers at the door. Drop cloths down before the first piece of equipment. And a photo of the clean-up before we leave. That’s how mold remediation in San Antonio should work.
Written by Rick Sumner, Owner at Tidemark Water Damage San Antonio, serving San Antonio and the surrounding area.