Provider profile
Water Damage Restoration | We Know Mold
Provider snapshot
What this listing says
Philadelphia-area homeowners dealing with water emergencies who want an owner-operated restoration company where Adam Mayer personally oversees every job from diagnosis through drying.
Best for
- Homeowners in Philadelphia, Bucks County, Chester County, or Cherry Hill NJ who need water extraction and structural drying after a pipe burst, flood, or sewage backup.
- Buyers who want the company owner personally on-site diagnosing and managing their restoration project rather than a rotating crew.
- Commercial property managers needing water damage response across multiple Philadelphia-area locations.
- Homeowners who discover mold after a water event and need both the moisture source addressed and the mold removed in one engagement.
About this company
We Know Mold is a Jenkintown-based restoration company that serves Philadelphia and the surrounding counties in both Pennsylvania and New Jersey. Owner Adam Mayer brands the operation around his personal involvement — he answers calls, runs diagnostics, and stays on jobs through completion. The company handles water damage, mold remediation, and structural drying for both residential and commercial properties.
The differentiator here is the owner-operator model. Mayer holds IICRC credentials and a MICRO Certified Mold Inspector designation, and the website emphasizes building science and thermal imaging over demolition. The company follows IICRC S520 standards for mold work and uses containment, dehumidification, and antimicrobial treatment. They also offer leak detection and sewage cleanup. One notable detail: Mayer will sometimes recommend a no-cost fix before suggesting paid work, which several reviewers mention.
The company claims 17-plus years of experience and runs a 24/7 emergency response with a stated 2-hour arrival window. They work with insurance adjusters directly and provide documentation for claims. The business is relatively new to Google reviews — all 41 reviews have come in since late 2025 — but the volume is growing steadily.
A perfect 5.0 rating across 41 Google reviews is unusual for any restoration company. Every single review is 5 stars with no exceptions. That is a strong signal, though the review count is still modest enough that a few negative experiences could shift the average quickly.
Services
Service area
Headquartered in Jenkintown, Pennsylvania. Serves Philadelphia and surrounding areas including Bucks County, Chester County (West Chester, Phoenixville, Exton, Downingtown, Pottstown), Montgomery County (Lansdale, Horsham), Levittown, Doylestown, and Cherry Hill, New Jersey. The claimed coverage area spans roughly 60 miles, so confirm response time for locations on the outer edges.
Review consensus
Adam Mayer is named in the majority of reviews and praised for fast response times, honest assessments, and clear communication. Multiple reviewers mention that he arrived within hours of calling — including late-night emergencies. Ryan is named alongside Adam in one review for overnight emergency water mitigation. Several reviewers note that Adam recommended less expensive solutions or no-cost remedies before suggesting paid work. Leslie G, a Local Guide with 39 reviews, specifically praised Adam for offering a free fix before suggesting paid service. Rebecca Kolsky describes Adam walking her through the full remediation process on a rental property. Commercial reviewer Denise Mayer calls them the only team she trusts for large-scale projects across multiple properties.
0 found across 41 total reviews at 5.0★. No negative reviews found. Every review in the dataset is 5 stars.
The review timeline is notable: 41 reviews accumulated in roughly 8 months, with a cluster of 15-plus reviews posted on January 16-17, 2026 alone. Many of these come from accounts with only 1-3 total reviews. Only 4 of the 41 reviewers are Local Guides. This pattern is common with new businesses that actively solicit reviews from early customers, but it limits how much weight individual reviews carry as independent data points.
Adam Mayer (owner/operator — praised in majority of reviews for responsiveness, honesty, and hands-on involvement). Ryan (technician — praised alongside Adam for late-night emergency response by Morgan Dowd).
The review profile is uniformly positive but thin on independent verification. If you hire We Know Mold, ask for Adam by name — he is clearly the driving force behind the operation. Get a written scope and price before work begins, and if the job involves mold testing followed by remediation, consider getting an independent test to confirm the findings.
Keep in mind
- They do both mold testing and mold remediation, which creates a conflict of interest. The same company that tells you whether you have a mold problem also profits from fixing it. Ask whether they will accept a third-party test or recommend an independent inspector.
- All 41 Google reviews are 5 stars, with many posted on the same dates in January 2026 and from accounts with only 1-3 total reviews. This pattern does not confirm anything, but it is worth noting when evaluating the review profile.
- The service area listed on their website spans from Cherry Hill NJ to Pottstown PA to Bucks County — a geographic footprint of roughly 60-plus miles. Confirm actual response time and willingness to travel to your specific location before booking.
- The company is relatively new to public review history. All reviews date from late October 2025 onward. There is limited long-term track record to evaluate.