A stain spreading across a ceiling is a surprisingly bad negotiating position. By the time most Plano homeowners start making calls, someone has already told them the drywall has to come out, and the temptation is to book the first crew that answers the phone. That is precisely the moment to slow down. Mold work in Texas is regulated at a level most homeowners never expect, and the questions asked before anyone picks up a pry bar determine whether the project ends with a signed clearance report or a reopened wall six months from now.
What follows is not a pitch for a particular company. It is a working checklist — licenses, containment, drying, money — so that the answers you collect can be compared side by side instead of guessed at.
First Question: Who Is Licensed to Do Which Part?
Texas draws a firm line at 25 contiguous square feet of moldy material. Below that threshold, a homeowner can clean up personally or hire anyone willing to do the work. At or above it, hired remediation becomes a regulated activity with a specific division of labor, and any crew that offers to handle the whole thing start to finish — assessment through cleanup — is either misunderstanding the law or hoping you are.
The process requires two separate companies. First, a TDLR-licensed mold assessment consultant walks the house, meters the walls and floor, traces where the water is coming from, and maps how far the damage reaches. That consultant writes a protocol for your specific address: which rooms, how much material, which methods, what containment looks like, and what has to be true before the job counts as finished. You are entitled to that protocol at least a day before work begins. Second, a TDLR-licensed remediation company writes a work plan that follows the protocol and files notice with the Texas Department of Licensing and Regulation — five days ahead of the start date, or by the next business day if it is a water-damage emergency. The state fee for that notification is $25.
So the first questions on your list should be blunt ones. Are you licensed for assessment, for remediation, or both — and if both, who is handling the other half of this project? Ask for the license number and check it at tdlr.texas.gov before signing anything. The stakes are real: unlicensed work can carry a TDLR penalty of $2,000 to $5,000 per violation, and up to $5,000 a day under Occupations Code 51.302. A contractor who cannot produce a number quickly is a contractor you do not need.
While you are waiting on paperwork, handle the room the way the professionals will. Stop the water if it is safe to do so. Skip the bleach and skip the scrubbing, especially over a large area — TDLR has noted that bleach without fixing the underlying moisture is not a lasting fix. Photograph the original condition before anything changes, keep children and pets out, and if mold may be inside or near the air handler, the EPA advises leaving the system off until it has been inspected.
Second Question: How Will Spores Stay in the Room?
Containment is the part of the job homeowners rarely see and adjusters rarely photograph, which makes it the easiest place to cut corners. Ask directly: What does containment look like in my house, and what equipment runs while it is up? A proper setup means plastic sheeting sealing the work area, a zipper door for entry, and a HEPA air scrubber running continuously so that spores disturbed by demolition are filtered rather than pushed into the rest of the house. Yellow project signs should be posted at the entrances. If a crew plans to open a wall in a bedroom with a box fan and a tarp, that is not containment.
The second half of that question is about removal and drying. Porous material with growth — drywall, insulation, carpet pad — gets cut out and bagged inside the containment, not carried through the kitchen. Framing and concrete are HEPA vacuumed and cleaned instead of demolished. Then the air movers and dehumidifiers come in and stay until the framing and slab hit the dry target written into the protocol. Drying is usually what sets the schedule, and crews that pull equipment early to free it up for the next job are setting up a repeat visit.
Ask who declares the job finished. The answer should be the assessment consultant, not the remediation crew. That consultant returns while containment is still standing, checks the work visually and by any sampling the protocol calls for, and writes a passed clearance report. Within 10 days of completion you should hold a Certificate of Mold Damage Remediation, TDI form MDR-1, signed by both companies. Request it by name. Under Insurance Code 544.303, an insurer may not underwrite against your home because of remediated mold damage documented on that certificate, and sellers must pass along every certificate from the prior five years. It is one of the few pieces of paper in a renovation that carries real legal weight later.
Third Question: What Is the Number Built On?
Cost questions are where conversations get vague, so anchor yourself with published planning ranges before you call. National figures put mold remediation at roughly $10 to $25 per square foot, averaging near $18, per This Old House in March 2026 and Fixr in 2025. A typical whole job runs $1,500 to $9,000 nationally, with an average around $3,500; small areas of about 50, 100, 200, and 500 square feet land in bands from roughly $500 up to $12,500; whole-house projects run $10,000 to $30,000. Inspection and testing by a licensed assessor, which is a separate company and a separate invoice, runs about $303 to $1,044 with air-sample lab fees of $250 to $350, per HomeAdvisor in 2025. Those are planning numbers, not quotes. Every actual figure for a Plano address comes from the companies that look at the job.
Ask each contractor to break the number into labor, material removal, containment equipment, drying days, and rebuild — and to state plainly that assessment, protocol, and clearance are billed separately. Getting at least two written quotes for mold removal plano projects is the simplest defense against a lowball bid that grows once the wall is open.
Then cover the water. Texas policies generally cover a sudden and accidental discharge and generally do not cover a continuous leak, and many pay to remove mold only as part of repairing covered damage. Report hidden losses within 30 days of discovery, and treat any coverage promise from a contractor as marketing rather than fact. Ask what the crew believes the source is: here in Plano, slab leaks under Blackland clay, attic air handlers, hail-damaged roofs, and the burst pipes of February 2021 account for most of the work. Ask whether permits are needed — cutting out and cleaning damaged material usually requires none, but plumbing, foundation, HVAC, roof, and wall rebuilds do, through city-registered contractors. Confirm that with Plano Building Inspections before demolition day, not after.
