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Newer homes, hidden moisture, one licensed visit
A brand-new house can still hide a wet wall. Ember, our mold detection dog, finds the source by scent, and Ryan, a licensed Texas Mold Assessment Consultant, tells you what it means and what to do next.
Prosper ZIP code 75078 · Licensed Mold Assessment Consultant
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Prefer to talk? Call or text (682) 688-7521.
✓ Licensed Mold Assessment Consultant (MAC)
✓ 10+ years in assessment and remediation
✓ Ember trained by Bill Whitstine
✓ All of Prosper: 75078
Ryan Rainey (left) and Bill Whitstine with Ember
Brand-new homes, same old moisture
Prosper has grown fast. The town went from 30,174 residents at the 2020 Census to an estimated 45,605 in 2025, according to U.S. Census QuickFacts, and nearly nine in ten homes are owner-occupied. Most of those houses are only a few years old, which leads a lot of owners to assume mold is an old-house problem.
It isn’t. Mold needs moisture and something to feed on, and new drywall, framing, and carpet backing are all food. The EPA puts it simply: the key to mold control is moisture control. A mold detection dog is useful in a new home for the same reason it is useful in an old one. It searches the whole house by scent, including the places a flashlight and an air sample never reach.
10+ years
in mold assessment and remediation
1 visit
to find it, confirm it, and plan the fix
Where water hides
These are the spots a mold detection dog search pays close attention to in a newer house, because water can collect there long before anything shows on the surface.
Framing and sheathing often sit open to the weather during a build. If they are closed in before they fully dry, that moisture ends up sealed behind fresh drywall where nobody can see it.
Many North Texas homes run their air handlers and ductwork in the attic. A clogged condensate line or a sweating duct can drip onto ceiling drywall for months before a stain appears below.
Energy-efficient homes hold air in, and they hold humidity in too. The EPA recommends keeping indoor humidity below 60 percent. Bathrooms and laundry rooms without strong exhaust can stay damp well past that.
Lawn irrigation that sprays the brick, or new soil that settles toward the foundation, sends water at the base of the walls. Over time that shows up as musty air near baseboards and exterior corners.
What happens on the day
Every mold detection dog visit follows the same order, whether the house is two years old or twenty. Here is what happens, start to finish.
Ember works room by room, along baseboards, around plumbing walls, and through closets. She is trained to the scent of active mold growth, so she can point to a spot that looks clean.
Ryan inspects the alert area, samples where needed, and explains what is serious and what is not. You leave with a verified answer instead of a hunch.
Ryan holds the Consultant license, so he writes the remediation protocol himself. Dog-only or technician-only companies cannot, which means a second bill. By state rule, we never remediate jobs we assess.
Know who is reading the alert
Bringing a dog into a house is itself a mold assessment in Texas, so any company doing it needs at least a Technician license. The difference shows up after the alert, when someone has to write the plan.
Technician: MAT
Consultant: MAC (Ryan’s license)
Signs worth a sniff test
✓ A musty smell shows up in a home that is only a few years old.
✓ A ceiling stain sits under the attic air handler or a bathroom.
✓ The builder fixed a leak, and you want to know it dried out completely.
✓ Someone in the family feels better whenever they are away from the house.
✓ You are buying a newer home and want a mold detection dog search before the option period ends.
The CDC explains the possible health effects of mold. We are not medical providers, so please talk with your doctor about any symptoms.
Still under warranty?
Many Prosper homeowners are still inside their builder’s warranty period. If something smells off or a ceiling spot keeps coming back, that is the time to find out what is going on, not after the coverage window has passed.
A mold detection dog visit gives you a written report from a licensed Consultant showing what was found and where, ready to share with your builder. We are not attorneys or insurance adjusters, so we stick to the facts.
“He didn’t just take air and surface samples. He explained each step so we understood how the testing works and what the results would show.”
Curtis M.
Local Guide · 274 reviews
After the alert
The search a mold detection dog makes is only the first step. If mold is found, Texas lays out five steps, and the certificate at the end is the record buyers, lenders, and insurers look for if the question ever comes up.
Ember searches, Ryan confirms, and the findings go into a written report.
Ryan writes the work plan the removal crew has to follow, area by area.
A licensed Mold Remediation Contractor handles the removal. We never remediate jobs we assess.
A Consultant tests the work areas to confirm the problem has been resolved.
Once clearance passes, the state Certificate of Mold Damage Remediation is issued.
A five or ten year old home has lived through hailstorms, plumbing repairs, and years of showers and laundry. A mold detection dog search during your option period covers the whole house quickly, and Ryan works to your deadline so the report arrives before you have to decide.
From Ryan’s other company
Nosy Mold Dog is a new name, so these are verified Google reviews of Ryan’s work at Mold Test DFW, his mold-testing company.
After Ryan e-mailed the test results, he spent 45 minutes going over them with us on the phone. Line by line he explained the problem, the solution, and the estimated cost, telling us what was serious and what wasn’t. He is the most thorough inspector I’ve ever dealt with on anything.
Jim S.
Home buyer · Local Guide, 17 reviews
We were in a quick option period on a house. He got in, did a complete thorough walkthrough, sent samples to the lab, and wrote up a report with a massive amount of broken-down details, all before our option period ended. Highly recommend!
Chris Falcon
Home buyer
He didn’t just take air and surface samples, he explained each step so we understood how the testing works and what the results would show. By far more honest and customer-focused than other companies we’ve used.
Curtis M.
Local Guide · 274 reviews
Consistently punctual, professional, and always goes the extra mile. His attention to detail with paperwork is top-notch: accurate, complete, and submitted promptly. If you’re looking for someone reliable and knowledgeable, Ryan is the one to call.
James Johnson
Operations Manager, United Water Restoration
Ryan brings an educational approach: not only what mold is and the signs of it, but how it can affect your body. He helped us identify a few spots causing allergic reactions for our children, and gave us actionable steps to prevent it going forward.
Andrew Gold
Homeowner & parent
Common questions in Prosper
Yes. Prosper sits in both Collin and Denton counties, and our mold detection dog visits cover both sides of town, including Glenbrooke and Doe Creek in far west Prosper.
If there has been a leak, a recurring smell, or a stain that keeps coming back, yes. The age of the house does not matter to mold. Moisture does.
Yes. Ember can check the area and the walls around it, and Ryan can confirm whether the materials are dry and whether any growth is present. That gives you an answer instead of an assumption.
No. Ember is a trained, handler-controlled working dog. She is friendly and calm on the job, and her focus stays on scent work from start to finish.
A detailed report of what was found and where. When remediation is needed, Ryan writes the protocol your contractor will follow, and he walks you through the results before you make any decisions.
Search, confirm, plan
You do not need to guess where to test. Book a mold detection dog visit and get a search, a licensed diagnosis, and a clear next step in one trip.
Book your visit
Call, text, or email with the address and a quick note about what you have noticed. A newer home, a recent repair, or a purchase on a deadline, we will get Ember on the schedule.
We reply fast
Service Area
75078
We Cover
Ember checks them all
