Dark staining spreading across a bathroom ceiling. A musty smell that returns every time the air conditioner runs. A soft baseboard near the slab that gives slightly under a fingertip. By the time most Plano homeowners start typing a search, the damage has already been quietly growing for weeks. The impulse is to get someone out fast. The smarter move is to get someone out informed. Before a contractor cuts drywall, pulls baseboards, or sets up containment in your hallway, you should be able to answer one question: do I know exactly who is working in my house, what they are licensed to do, and what happens after the dust settles? The questions below are the ones worth asking on the phone, before anyone shows up with a utility knife.
Licensing, Paperwork, and the Questions That Come First
Texas regulates mold work more tightly than most states, and that works in your favor if you know what to ask. Under Occupations Code chapter 1958, mold assessment and mold remediation are two separate licenses issued by the Texas Department of Licensing and Regulation (TDLR), and the same company may not perform both on your project. That single rule tells you a lot about whether the person on the phone actually understands the job.
Start with the threshold question: how many contiguous square feet of mold are involved? Twenty-five contiguous square feet is the line where licensed work begins in Texas. Below it, you can clean it yourself or hire anyone; at or above it, the job has to follow the licensed sequence. A company that cannot explain that distinction clearly is a company worth keeping at arm’s length.
Then ask for paperwork — before the estimate, not after. Request the Consumer Mold Information Sheet. Ask for proof of at least $1 million in liability insurance. Ask when you will receive the written remediation protocol, which the assessment consultant must provide at least a day before work begins. Ask whether the remediation contractor will notify TDLR at least five days before starting (next business day in a water-damage emergency) and who covers the $25 fee. And ask for the license number so you can verify it yourself through the TDLR license search. Unlicensed assessment or remediation is a Class C violation carrying a $2,000 to $5,000 penalty per violation — which means the license check is not a formality.
Finally, ask what you receive at the end. On licensed work, the contractor must give you a Certificate of Mold Damage Remediation (TDI form MDR-1), signed by both licensees, within 10 days of completion. Keep that document where you can find it. It is the piece of paper a future buyer or insurer may ask for, and buyers are entitled to copies for five years.
Moisture, Containment, and What “Removal” Really Means
Mold is a symptom. Water is the disease. So the most revealing question you can ask is not “how much to take it out” but “what caused it, and how will we know it is fixed?” Blackland clay soil under much of Plano shifts with moisture, and slab leaks, failed condensate lines, appliance failures, and hail-bruised roofs all feed the same problem. Ask how the company maps moisture before quoting — whether it looks past the visible patch, into the cavity behind the drywall, and up at the attic decking or the air handler above the garage.
Ask what “removal” actually means in their scope. Will moldy drywall and insulation be cut out and bagged, or will surfaces be treated and left in place? What containment keeps spores out of the rest of the house, and is HEPA filtration part of the plan? How is drying verified before the plastic comes down? Those specifics belong in the written protocol and in the contractor’s work plan, so ask to see both documents rather than a verbal summary over the phone.
If the mold sits anywhere near the HVAC system, press harder on equipment questions. The EPA advises against running the system until it has been checked when mold may be in or near the air handler or ducts, and Texas has separate rules for mold work on HVAC systems. A contractor who shrugs at that detail is telling you something useful.
Then ask about clearance. Who comes back to confirm the job passed — the company that did the removal, or the assessment consultant who wrote the protocol? In Texas it should be the assessor, working independently, taking any samples the protocol calls for and issuing a written passed clearance report before containment comes down. The person selling you the work should never be the person grading it.
Cost, Scope Comparison, and Local Logistics
Most people build their shortlist by searching for mold remediation companies near me and calling the first three names that appear. Cost conversations are where vague answers get expensive. Most Texas companies inspect before they price, so treat any phone figure as a rough starting point rather than a quote. Ask what the written scope includes — and just as importantly, what it excludes. Demolition, disposal, drying equipment, patching, and paint rarely sit in the same line item. Keep in mind that on licensed work, assessment, protocol, and clearance are separate invoices from a separate company. Published national planning ranges from sources such as This Old House, Fixr, and HomeAdvisor can help you sanity-check a number, but the actual quote for a Plano home comes from the licensed companies after they see the space.
Ask about sequencing, too. When can work start, how long will containment stay up, and what does the TDLR notification timeline mean for your calendar? Renters should ask who is responsible for what — Texas Property Code 92.052 sets out a landlord’s duty to repair conditions that materially affect health or safety, and mold traced to a plumbing failure usually lands there. Owners of larger residential properties should also ask about the 10-unit licensing rule that applies to some multifamily work in Frisco, McKinney, Allen, and nearby cities.
Insurance deserves its own round of questions. Will the company document damage with photos and moisture readings, will it bill directly or leave you to file, and can it explain how the Certificate of Mold Damage Remediation fits into a claim? You do not need flawless answers to every question. You need a company that answers without squirming.
Ask one last logistical question before you hang up: what should I do between now and the inspection? The right answers are simple. Stop the water if you can do it safely — close the fixture valve or the main at the meter box. Skip the bleach and the scrubbing, especially over a large patch, since disturbing it spreads spores and TDLR notes that bleach without fixing the water is not a lasting fix. Photograph everything in its original condition and note the date you found it. Keep children and pets out of the room. And if the mold may be in or near the air handler or ducts, leave the system off until someone licensed has checked it. The EPA notes that wet materials dried within 24 to 48 hours usually do not grow mold, which is why the clock matters more than the logo on the truck.
